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Groups > comp.sys.mac.system > #133708 > unrolled thread
| Started by | David_B <DavidB@nomail.afraid.org> |
|---|---|
| First post | 2020-07-24 13:30 +0100 |
| Last post | 2020-07-30 01:31 +0100 |
| Articles | 20 on this page of 76 — 8 participants |
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DNS Cache question David_B <DavidB@nomail.afraid.org> - 2020-07-24 13:30 +0100
Re: DNS Cache question Wolffan <akwolffan@zoho.com> - 2020-07-24 08:45 -0400
DNS Cache questions - UNANSWERED David_B <DavidB@nomail.afraid.org> - 2020-07-28 08:45 +0100
Re: DNS Cache questions - UNANSWERED Krzysztof Mitko <invalid@kmitko.at.list.dot.pl> - 2020-07-28 10:32 +0200
Re: DNS Cache questions - UNANSWERED David_B <DavidB@nomail.afraid.org> - 2020-07-28 10:47 +0100
Re: DNS Cache questions - UNANSWERED Krzysztof Mitko <invalid@kmitko.at.list.dot.pl> - 2020-07-28 12:35 +0200
Re: DNS Cache questions - UNANSWERED Krzysztof Mitko <invalid@kmitko.at.list.dot.pl> - 2020-07-28 12:51 +0200
Re: DNS Cache questions David_B <DavidB@nomail.afraid.org> - 2020-07-30 13:01 +0100
Re: DNS Cache questions - UNANSWERED Snit <usenet@gallopinginsanity.com> - 2020-07-28 08:40 +0000
Re: DNS Cache questions - UNANSWERED Krzysztof Mitko <invalid@kmitko.at.list.dot.pl> - 2020-07-28 10:55 +0200
Re: DNS Cache questions - UNANSWERED Snit <usenet@gallopinginsanity.com> - 2020-07-28 14:25 -0700
Re: DNS Cache questions - UNANSWERED JF Mezei <jfmezei.spamnot@vaxination.ca> - 2020-07-28 19:22 -0400
Re: DNS Cache questions - UNANSWERED Wolffan <akwolffan@zoho.com> - 2020-07-28 21:54 -0400
Re: DNS Cache questions - UNANSWERED nospam <nospam@nospam.invalid> - 2020-07-28 21:55 -0400
Re: DNS Cache questions - UNANSWERED Wolffan <akwolffan@zoho.com> - 2020-07-28 21:59 -0400
Re: DNS Cache questions - UNANSWERED David_B <DavidB@nomail.afraid.org> - 2020-07-29 08:32 +0100
Re: DNS Cache questions - UNANSWERED Wolffan <akwolffan@zoho.com> - 2020-07-29 09:10 -0400
Re: DNS Cache questions David_B <DavidB@nomail.afraid.org> - 2020-07-29 17:26 +0100
Re: DNS Cache questions Alan Baker <notonyourlife@no.no.no.no> - 2020-07-29 09:36 -0700
Re: DNS Cache questions nospam <nospam@nospam.invalid> - 2020-07-29 13:12 -0400
Re: DNS Cache questions Wolffan <akwolffan@zoho.com> - 2020-07-29 14:43 -0400
Re: DNS Cache questions nospam <nospam@nospam.invalid> - 2020-07-29 14:55 -0400
Re: DNS Cache questions Wolffan <akwolffan@zoho.com> - 2020-07-29 15:01 -0400
Re: DNS Cache questions nospam <nospam@nospam.invalid> - 2020-07-29 15:13 -0400
Re: DNS Cache questions David_B <DavidB@nomail.afraid.org> - 2020-07-29 20:17 +0100
Re: DNS Cache questions David_B <DavidB@nomail.afraid.org> - 2020-07-29 20:19 +0100
Re: DNS Cache questions Wolffan <akwolffan@zoho.com> - 2020-07-29 14:40 -0400
Re: DNS Cache questions David_B <DavidB@nomail.afraid.org> - 2020-07-29 20:12 +0100
Re: DNS Cache questions Alan Baker <notonyourlife@no.no.no.no> - 2020-07-29 12:19 -0700
Re: DNS Cache questions David_B <DavidB@nomail.afraid.org> - 2020-07-29 20:26 +0100
Re: DNS Cache questions Alan Baker <notonyourlife@no.no.no.no> - 2020-07-29 13:51 -0700
Re: DNS Cache questions Wolffan <akwolffan@zoho.com> - 2020-07-29 17:18 -0400
Re: DNS Cache questions David_B <DavidB@nomail.afraid.org> - 2020-07-30 00:24 +0100
Re: DNS Cache questions Alan Baker <notonyourlife@no.no.no.no> - 2020-07-29 18:50 -0700
Re: DNS Cache questions Wolffan <akwolffan@zoho.com> - 2020-07-29 21:52 -0400
Re: DNS Cache questions Alan Baker <notonyourlife@no.no.no.no> - 2020-07-29 18:53 -0700
Re: DNS Cache questions Wolffan <akwolffan@zoho.com> - 2020-07-29 15:58 -0400
Re: DNS Cache questions David_B <DavidB@nomail.afraid.org> - 2020-07-29 23:48 +0100
Re: DNS Cache questions Wolffan <akwolffan@zoho.com> - 2020-07-29 21:48 -0400
Re: DNS Cache questions David_B <DavidB@nomail.afraid.org> - 2020-07-30 12:18 +0100
Re: DNS Cache questions David_B <DavidB@nomail.afraid.org> - 2020-07-30 12:54 +0100
Re: DNS Cache questions Wolffan <akwolffan@zoho.com> - 2020-07-30 10:08 -0400
Re: DNS Cache questions Wolffan <akwolffan@zoho.com> - 2020-07-30 10:07 -0400
Re: DNS Cache questions David_B <DavidB@nomail.afraid.org> - 2020-07-30 15:15 +0100
Re: DNS Cache questions Wolffan <akwolffan@zoho.com> - 2020-07-30 11:15 -0400
Re: DNS Cache questions David_B <DavidB@nomail.afraid.org> - 2020-07-30 16:58 +0100
Re: DNS Cache questions nospam <nospam@nospam.invalid> - 2020-07-30 12:07 -0400
Re: DNS Cache questions David_B <DavidB@nomail.afraid.org> - 2020-07-30 17:24 +0100
Re: DNS Cache questions Wolffan <akwolffan@zoho.com> - 2020-07-30 13:39 -0400
Re: DNS Cache questions Wolffan <akwolffan@zoho.com> - 2020-07-30 13:39 -0400
Re: DNS Cache questions David_B <DavidB@nomail.afraid.org> - 2020-07-30 23:33 +0100
Re: DNS Cache questions Wolffan <akwolffan@zoho.com> - 2020-07-30 18:50 -0400
Re: DNS Cache questions David_B <DavidB@nomail.afraid.org> - 2020-07-30 23:56 +0100
Re: DNS Cache questions Alan Baker <notonyourlife@no.no.no.no> - 2020-07-30 15:59 -0700
Re: DNS Cache questions nospam <nospam@nospam.invalid> - 2020-07-30 19:06 -0400
Re: DNS Cache questions Snit <usenet@gallopinginsanity.com> - 2020-07-30 16:55 -0700
Re: DNS Cache questions David_B <DavidB@nomail.afraid.org> - 2020-07-31 10:01 +0100
Re: DNS Cache questions Snit <usenet@gallopinginsanity.com> - 2020-07-31 10:00 +0000
Re: DNS Cache questions David_B <DavidB@nomail.afraid.org> - 2020-07-31 12:14 +0100
Re: DNS Cache questions David_B <DavidB@nomail.afraid.org> - 2020-07-31 10:21 +0100
Re: DNS Cache questions Snit <usenet@gallopinginsanity.com> - 2020-07-31 10:00 +0000
Re: DNS Cache questions Wolffan <akwolffan@zoho.com> - 2020-07-30 19:07 -0400
Re: DNS Cache questions David_B <DavidB@nomail.afraid.org> - 2020-07-31 10:08 +0100
Re: DNS Cache questions Wolffan <akwolffan@zoho.com> - 2020-07-31 06:48 -0400
Re: DNS Cache questions Wolffan <akwolffan@zoho.com> - 2020-07-30 19:05 -0400
Re: DNS Cache questions David_B <DavidB@nomail.afraid.org> - 2020-07-31 10:24 +0100
Re: DNS Cache questions Wolffan <akwolffan@zoho.com> - 2020-07-31 06:48 -0400
Re: DNS Cache questions David_B <DavidB@nomail.afraid.org> - 2020-08-01 00:08 +0100
Re: DNS Cache questions Wolffan <akwolffan@zoho.com> - 2020-07-31 21:44 -0400
Re: DNS Cache questions Panthera Tigris Altaica <northerntiger@outlook.com> - 2020-08-08 06:54 -0400
Re: DNS Cache questions Wolffan <akwolffan@zoho.com> - 2020-08-08 09:57 -0400
Re: DNS Cache questions David_B <DavidB@nomail.afraid.org> - 2020-08-08 16:28 +0100
Re: DNS Cache questions Wolffan <akwolffan@zoho.com> - 2020-08-08 13:58 -0400
Re: DNS Cache questions Panthera Tigris Altaica <northerntiger@outlook.com> - 2020-08-09 09:01 -0400
Re: DNS Cache questions Wolffan <akwolffan@zoho.com> - 2020-09-27 11:49 -0400
Re: DNS Cache questions - UNANSWERED David_B <DavidB@nomail.afraid.org> - 2020-07-30 01:31 +0100
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| From | David_B <DavidB@nomail.afraid.org> |
|---|---|
| Date | 2020-07-24 13:30 +0100 |
| Subject | DNS Cache question |
| Message-ID | <nvASG.100406$dTb.45114@fx41.ams1> |
I've just read here: https://phoenixnap.com/kb/how-to-flush-dns-cache Is there any way to see what is currently in one's DNS cache BEFORE clearing it? Does anyone know a more simple way of clearing one's Cache (I'm using Catalina)
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| From | Wolffan <akwolffan@zoho.com> |
|---|---|
| Date | 2020-07-24 08:45 -0400 |
| Message-ID | <0001HW.24CB0F75002C748C70000510538F@news.supernews.com> |
| In reply to | #133708 |
On 24 Jul 2020, David_B wrote (in article <nvASG.100406$dTb.45114@fx41.ams1>): > I've just read here: https://phoenixnap.com/kb/how-to-flush-dns-cache > > Is there any way to see what is currently in one's DNS cache BEFORE > clearing it? > > Does anyone know a more simple way of clearing one's Cache (I'm using > Catalina) Why should anyone spoon-feed you, pariah?
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| From | David_B <DavidB@nomail.afraid.org> |
|---|---|
| Date | 2020-07-28 08:45 +0100 |
| Subject | DNS Cache questions - UNANSWERED |
| Message-ID | <sIQTG.82762$pq3.15877@fx25.ams1> |
| In reply to | #133708 |
On 24/07/2020 13:30, David_B wrote: > I've just read here: https://phoenixnap.com/kb/how-to-flush-dns-cache > > Does anyone know a more simple way of clearing one's Cache (I'm using > Catalina) > Is there any way to see what is currently in one's DNS cache BEFORE > clearing it? I would very much appreciate some help with this. It's difficult to believe that nobody in these groups has the technical expertise to answer so do, please, help. TIA. -- David FYI Why is a regular DNS flush useful? https://www.ionos.com/digitalguide/server/configuration/flush-dns/ EXTRACT As mentioned earlier, it makes sense to clear the DNS cache regularly. This doesn’t happen by itself: The entries remain in the cache until the defined TTL expires. There are three reasons in particular that you should take action and set the DNS register to zero with a DNS flush, regardless of the actual validity period of the individual records: Hide search behavior: While the tracking of user behavior on the internet is primarily carried out by cookies, JavaScript, and others, the DNS cache still offers a potential target for all data collectors. On the basis of the listed addresses, including additional information such as the validity period (if given), you can get an approximate overview of your page history. In any case, your address storage betrays which projects you call up regularly or over a long time. The more comprehensive the collection of cached addresses is, the more you reveal yourself. Security against manipulation: You should also clear the DNS cache from time to time for security reasons. The information in the cache is practical for delivering web projects – but can quickly become dangerous in the wrong hands. If cybercriminals gain access to the DNS cache, they’re in a position to manipulate the entries and, for example, redirect you to the wrong websites. This so-called DNS poisoning or DNS spoofing is often used to access sensitive log-in data, for example, to online banking. With a DNS flush, you can also dispose of such manipulated records with minimal effort. Solve technical problems: A DNS flush on Windows, macOS, and others is often an effective solution if you’re experiencing technical problems when accessing web applications. For example, it’s possible that an incorrect version of the called website is being displayed due to outdated entries. In such cases, the domain name is probably filed in the cache with an incorrect or old IP address, which can be remedied by clearing the DNS cache. As a result, the request will once again be directed to the appropriate DNS server and not answered from the cache. With the updated address information, the connection to the web project will once again work as planned.
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| From | Krzysztof Mitko <invalid@kmitko.at.list.dot.pl> |
|---|---|
| Date | 2020-07-28 10:32 +0200 |
| Subject | Re: DNS Cache questions - UNANSWERED |
| Message-ID | <5f1fe29e$0$525$65785112@news.neostrada.pl> |
| In reply to | #133820 |
On 28/07/2020 09:45, David_B wrote: > On 24/07/2020 13:30, David_B wrote: > >> I've just read here: https://phoenixnap.com/kb/how-to-flush-dns-cache >> >> Does anyone know a more simple way of clearing one's Cache (I'm using >> Catalina) That's literally copy-pasting one command to a terminal. I don't think there's a simpler way, unless you're interested in buying my highly advanced super-duper-ultra cache flushing app for a mere 9999.99€ :). >> Is there any way to see what is currently in one's DNS cache BEFORE >> clearing it? It's not trivial. You need to set the system log to display private data by installing custom configuration profile, then send the signal INFO to process mDNSResponder. The DNS data will appear in the system log. > I would very much appreciate some help with this. > > It's difficult to believe that nobody in these groups has the technical > expertise to answer so do, please, help. TIA. Or no one bothered to do a google search for you. -- Chemical engineers do it in packed beds.
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| From | David_B <DavidB@nomail.afraid.org> |
|---|---|
| Date | 2020-07-28 10:47 +0100 |
| Subject | Re: DNS Cache questions - UNANSWERED |
| Message-ID | <BuSTG.366310$oU.15813@fx26.ams1> |
| In reply to | #133821 |
On 28/07/2020 09:32, Krzysztof Mitko wrote: > On 28/07/2020 09:45, David_B wrote: >> On 24/07/2020 13:30, David_B wrote: >> >>> I've just read here: https://phoenixnap.com/kb/how-to-flush-dns-cache >>> >>> Does anyone know a more simple way of clearing one's Cache (I'm using >>> Catalina) > > That's literally copy-pasting one command to a terminal. I don't think > there's a simpler way, unless you're interested in buying my highly > advanced super-duper-ultra cache flushing app for a mere 9999.99€ :). I cannot find it in the Apple App Store. :-( >>> Is there any way to see what is currently in one's DNS cache BEFORE >>> clearing it? > > It's not trivial. You need to set the system log to display private data > by installing custom configuration profile, then send the signal INFO to > process mDNSResponder. The DNS data will appear in the system log. You sound as if you've done this before! Please show - in plain sight for everyone to see - what information is currently residing in YOUR own, personal, DNS Cache. I suspect that I may not be able to interpret the information, even if I could find it. Your example will help me to decide whether or not to bother. TIA for your time and trouble. >> I would very much appreciate some help with this. >> >> It's difficult to believe that nobody in these groups has the >> technical expertise to answer so do, please, help. TIA. > > Or no one bothered to do a google search for you. I'm on LinkedIn, here:- https://www.linkedin.com/in/boaterdave/ Btw ..... User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 Your Thunderbird is way out of date! 78.0.1 (64-bit) is the current version.
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| From | Krzysztof Mitko <invalid@kmitko.at.list.dot.pl> |
|---|---|
| Date | 2020-07-28 12:35 +0200 |
| Subject | Re: DNS Cache questions - UNANSWERED |
| Message-ID | <5f1fff55$0$501$65785112@news.neostrada.pl> |
| In reply to | #133825 |
On 28/07/2020 11:47, David_B wrote: > On 28/07/2020 09:32, Krzysztof Mitko wrote: >> On 28/07/2020 09:45, David_B wrote: >>> On 24/07/2020 13:30, David_B wrote: >>> >>>> I've just read here: https://phoenixnap.com/kb/how-to-flush-dns-cache >>>> >>>> Does anyone know a more simple way of clearing one's Cache (I'm >>>> using Catalina) >> >> That's literally copy-pasting one command to a terminal. I don't think >> there's a simpler way, unless you're interested in buying my highly >> advanced super-duper-ultra cache flushing app for a mere 9999.99€ :). > > I cannot find it in the Apple App Store. :-( > >>>> Is there any way to see what is currently in one's DNS cache BEFORE >>>> clearing it? >> >> It's not trivial. You need to set the system log to display private >> data by installing custom configuration profile, then send the signal >> INFO to process mDNSResponder. The DNS data will appear in the system >> log. > > You sound as if you've done this before! > > Please show - in plain sight for everyone to see - what information is > currently residing in YOUR own, personal, DNS Cache. Sorry, I was mistaken - this worked in 10.15.3, but no longer works in 10.15.6, I get message "Sending SIGINFO to mDNSResponder daemon is deprecated. To trigger state dump, please use 'dns-sd -O', enter 'dns-sd -h' for more information", dns-sd -O gives the error "State dump is only enabled in internal builds". It looks like while you can get full mDNSResponder logs (see below for exempt), you can no longer dump entire cache at once. default 12:31:27.588598+0200 mDNSResponder [R1207] DNSServiceGetAddrInfo(C000D000, 0, 0, ekskursje.pl) START PID[644](Safari) default 12:31:27.588658+0200 mDNSResponder [R1207->Q47278] GetServerForQuestion: 0x7fa49880b000 DNS server (0x7fa496f10210) 2a01:1dc::1:4:53 (Penalty Time Left 0) (Scope None:0x0:-1) r ekskursje.pl. (AAAA) default 12:31:27.588741+0200 mDNSResponder [R1207->Q4701] GetServerForQuestion: 0x7fa49881d000 DNS server (0x7fa496f10210) 2a01:1dc::1:4:53 (Penalty Time Left 0) (Scope None:0x0:-1) for ekskursje.pl. (Addr) default 12:31:27.589687+0200 mDNSResponder [Q47278] DNS Query (30) (flags 0100) RCODE: NoErr (0) RD: ekskursje.pl. AAAA? 0/0/0 default 12:31:27.590019+0200 mDNSResponder [Q4701] DNS Query (30) (flags 0100) RCODE: NoErr (0) RD: ekskursje.pl. A? 0/0/0 > I suspect that I may not be able to interpret the information, even if I > could find it. Your example will help me to decide whether or not to > bother. TIA for your time and trouble. > >>> I would very much appreciate some help with this. >>> >>> It's difficult to believe that nobody in these groups has the >>> technical expertise to answer so do, please, help. TIA. >> >> Or no one bothered to do a google search for you. > > I'm on LinkedIn, here:- https://www.linkedin.com/in/boaterdave/ > > Btw ..... > > User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:68.0) > Gecko/20100101 Thunderbird/68.10.0 > > Your Thunderbird is way out of date! 78.0.1 (64-bit) is the current > version. > -- Chemical engineers do it in packed beds.
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| From | Krzysztof Mitko <invalid@kmitko.at.list.dot.pl> |
|---|---|
| Date | 2020-07-28 12:51 +0200 |
| Subject | Re: DNS Cache questions - UNANSWERED |
| Message-ID | <5f200335$0$511$65785112@news.neostrada.pl> |
| In reply to | #133825 |
On 28/07/2020 11:47, David_B wrote: > On 28/07/2020 09:32, Krzysztof Mitko wrote: >> On 28/07/2020 09:45, David_B wrote: >>> On 24/07/2020 13:30, David_B wrote: >>> >>>> I've just read here: https://phoenixnap.com/kb/how-to-flush-dns-cache >>>> >>>> Does anyone know a more simple way of clearing one's Cache (I'm >>>> using Catalina) >> >> That's literally copy-pasting one command to a terminal. I don't think >> there's a simpler way, unless you're interested in buying my highly >> advanced super-duper-ultra cache flushing app for a mere 9999.99€ :). > > I cannot find it in the Apple App Store. :-( > >>>> Is there any way to see what is currently in one's DNS cache BEFORE >>>> clearing it? >> >> It's not trivial. You need to set the system log to display private >> data by installing custom configuration profile, then send the signal >> INFO to process mDNSResponder. The DNS data will appear in the system >> log. > > You sound as if you've done this before! > > Please show - in plain sight for everyone to see - what information is > currently residing in YOUR own, personal, DNS Cache. Sorry, I was mistaken - this worked in 10.15.3, but no longer works in 10.15.6, I get message "Sending SIGINFO to mDNSResponder daemon is deprecated. To trigger state dump, please use 'dns-sd -O', enter 'dns-sd -h' for more information", dns-sd -O gives the error "State dump is only enabled in internal builds". It looks like while you can get full mDNSResponder logs (see below for exempt), you can no longer dump entire cache at once. In other words: you can only get DNS calls after you enable displaying private data in the logs. default 12:31:27.588598+0200 mDNSResponder [R1207] DNSServiceGetAddrInfo(C000D000, 0, 0, ekskursje.pl) START PID[644](Safari) default 12:31:27.588658+0200 mDNSResponder [R1207->Q47278] GetServerForQuestion: 0x7fa49880b000 DNS server (0x7fa496f10210) 2a01:1dc::1:4:53 (Penalty Time Left 0) (Scope None:0x0:-1) r ekskursje.pl. (AAAA) default 12:31:27.588741+0200 mDNSResponder [R1207->Q4701] GetServerForQuestion: 0x7fa49881d000 DNS server (0x7fa496f10210) 2a01:1dc::1:4:53 (Penalty Time Left 0) (Scope None:0x0:-1) for ekskursje.pl. (Addr) default 12:31:27.589687+0200 mDNSResponder [Q47278] DNS Query (30) (flags 0100) RCODE: NoErr (0) RD: ekskursje.pl. AAAA? 0/0/0 default 12:31:27.590019+0200 mDNSResponder [Q4701] DNS Query (30) (flags 0100) RCODE: NoErr (0) RD: ekskursje.pl. A? 0/0/0 > I suspect that I may not be able to interpret the information, even if I > could find it. Your example will help me to decide whether or not to > bother. TIA for your time and trouble. > >>> I would very much appreciate some help with this. >>> >>> It's difficult to believe that nobody in these groups has the >>> technical expertise to answer so do, please, help. TIA. >> >> Or no one bothered to do a google search for you. > > I'm on LinkedIn, here:- https://www.linkedin.com/in/boaterdave/ > > Btw ..... > > User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:68.0) > Gecko/20100101 Thunderbird/68.10.0 > > Your Thunderbird is way out of date! 78.0.1 (64-bit) is the current > version. > -- Chemical engineers do it in packed beds.
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| From | David_B <DavidB@nomail.afraid.org> |
|---|---|
| Date | 2020-07-30 13:01 +0100 |
| Subject | Re: DNS Cache questions |
| Message-ID | <1EyUG.132061$dTb.108447@fx41.ams1> |
| In reply to | #133827 |
On 28/07/2020 11:51, Krzysztof Mitko wrote: > On 28/07/2020 11:47, David_B wrote: >> On 28/07/2020 09:32, Krzysztof Mitko wrote: >>> On 28/07/2020 09:45, David_B wrote: >>>> On 24/07/2020 13:30, David_B wrote: >>>> >>>>> I've just read here: https://phoenixnap.com/kb/how-to-flush-dns-cache >>>>> >>>>> Does anyone know a more simple way of clearing one's Cache (I'm >>>>> using Catalina) >>> >>> That's literally copy-pasting one command to a terminal. I don't >>> think there's a simpler way, unless you're interested in buying my >>> highly advanced super-duper-ultra cache flushing app for a mere >>> 9999.99€ :). >> >> I cannot find it in the Apple App Store. :-( I hope you realise that I was joking with you! ;-) >>>>> Is there any way to see what is currently in one's DNS cache BEFORE >>>>> clearing it? >>> >>> It's not trivial. You need to set the system log to display private >>> data by installing custom configuration profile, then send the signal >>> INFO to process mDNSResponder. The DNS data will appear in the system >>> log. >> >> You sound as if you've done this before! >> >> Please show - in plain sight for everyone to see - what information is >> currently residing in YOUR own, personal, DNS Cache. > > Sorry, I was mistaken - this worked in 10.15.3, but no longer works in > 10.15.6, I get message "Sending SIGINFO to mDNSResponder daemon is > deprecated. To trigger state dump, please use 'dns-sd -O', enter 'dns-sd > -h' for more information", dns-sd -O gives the error "State dump is only > enabled in internal builds". It looks like while you can get full > mDNSResponder logs (see below for exempt), you can no longer dump entire > cache at once. In other words: you can only get DNS calls after you > enable displaying private data in the logs. > > default 12:31:27.588598+0200 mDNSResponder [R1207] > DNSServiceGetAddrInfo(C000D000, 0, 0, ekskursje.pl) START PID[644](Safari) > default 12:31:27.588658+0200 mDNSResponder [R1207->Q47278] > GetServerForQuestion: 0x7fa49880b000 DNS server (0x7fa496f10210) > 2a01:1dc::1:4:53 (Penalty Time Left 0) (Scope None:0x0:-1) r > ekskursje.pl. (AAAA) > default 12:31:27.588741+0200 mDNSResponder [R1207->Q4701] > GetServerForQuestion: 0x7fa49881d000 DNS server (0x7fa496f10210) > 2a01:1dc::1:4:53 (Penalty Time Left 0) (Scope None:0x0:-1) for > ekskursje.pl. (Addr) > default 12:31:27.589687+0200 mDNSResponder [Q47278] DNS Query > (30) (flags 0100) RCODE: NoErr (0) RD: ekskursje.pl. AAAA? 0/0/0 > default 12:31:27.590019+0200 mDNSResponder [Q4701] DNS Query > (30) (flags 0100) RCODE: NoErr (0) RD: ekskursje.pl. A? 0/0/0 Thank you so much for TRYING to help! :-D >> I suspect that I may not be able to interpret the information, even if >> I could find it. Your example will help me to decide whether or not to >> bother. TIA for your time and trouble. >> >>>> I would very much appreciate some help with this. >>>> >>>> It's difficult to believe that nobody in these groups has the >>>> technical expertise to answer so do, please, help. TIA. >>> >>> Or no one bothered to do a google search for you. >> >> I'm on LinkedIn, here:- https://www.linkedin.com/in/boaterdave/ >> >> Btw ..... >> >> User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:68.0) >> Gecko/20100101 Thunderbird/68.10.0 >> >> Your Thunderbird is way out of date! 78.0.1 (64-bit) is the current >> version. My upgrade to the new product worked well. :-) -- Kind regards, David
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| From | Snit <usenet@gallopinginsanity.com> |
|---|---|
| Date | 2020-07-28 08:40 +0000 |
| Subject | Re: DNS Cache questions - UNANSWERED |
| Message-ID | <hoa6jjFgvl4U1@mid.individual.net> |
| In reply to | #133820 |
David_B <DavidB@nomail.afraid.org> wrote: > On 24/07/2020 13:30, David_B wrote: > >> I've just read here: https://phoenixnap.com/kb/how-to-flush-dns-cache >> >> Does anyone know a more simple way of clearing one's Cache (I'm using >> Catalina) > >> Is there any way to see what is currently in one's DNS cache BEFORE >> clearing it? > > > I would very much appreciate some help with this. > > It's difficult to believe that nobody in these groups has the technical > expertise to answer so do, please, help. TIA. I have no way to see the cache off hand, but I do have Automator actions set to run command line commands so I do not have to remember them. Even simple things like restarting the Dock. Not really needed but sometimes there is a small visual glitch on the Dock I like to fix. Or resetting launch services (sometimes apps get duplicated in the Open With menu or there are other similar glitches — though I have not seen that in some time). So I can easily make a service where you can go to the Finder menu and select Service and then select the command. ... -- Personal attacks from those who troll show their own insecurity. They cannot use reason to show the message to be wrong so they try to feel somehow superior by attacking the messenger. They cling to their attacks and ignore the message time and time again.
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| From | Krzysztof Mitko <invalid@kmitko.at.list.dot.pl> |
|---|---|
| Date | 2020-07-28 10:55 +0200 |
| Subject | Re: DNS Cache questions - UNANSWERED |
| Message-ID | <5f1fe80a$0$17361$65785112@news.neostrada.pl> |
| In reply to | #133822 |
On 28/07/2020 10:40, Snit wrote: > David_B <DavidB@nomail.afraid.org> wrote: >> On 24/07/2020 13:30, David_B wrote: >> >>> I've just read here: https://phoenixnap.com/kb/how-to-flush-dns-cache >>> >>> Does anyone know a more simple way of clearing one's Cache (I'm using >>> Catalina) >> >>> Is there any way to see what is currently in one's DNS cache BEFORE >>> clearing it? >> >> >> I would very much appreciate some help with this. >> >> It's difficult to believe that nobody in these groups has the technical >> expertise to answer so do, please, help. TIA. > > I have no way to see the cache off hand, but I do have Automator actions > set to run command line commands so I do not have to remember them. Even > simple things like restarting the Dock. Not really needed but sometimes > there is a small visual glitch on the Dock I like to fix. Or resetting > launch services (sometimes apps get duplicated in the Open With menu or > there are other similar glitches — though I have not seen that in some > time). Or he can open Script Editor, paste do shell script "killall -HUP mDNSResponder" with administrator privileges and export is as an application (hence my joke about advanced cache flushing app). Or he can create an executable bash script doing the same. Or do something different. > So I can easily make a service where you can go to the Finder menu and > select Service and then select the command. > > .... > -- Chemical engineers do it in packed beds.
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| From | Snit <usenet@gallopinginsanity.com> |
|---|---|
| Date | 2020-07-28 14:25 -0700 |
| Subject | Re: DNS Cache questions - UNANSWERED |
| Message-ID | <hobjesFq8sdU1@mid.individual.net> |
| In reply to | #133823 |
On 7/28/20 1:55 AM, Krzysztof Mitko wrote: > On 28/07/2020 10:40, Snit wrote: >> David_B <DavidB@nomail.afraid.org> wrote: >>> On 24/07/2020 13:30, David_B wrote: >>> >>>> I've just read here: https://phoenixnap.com/kb/how-to-flush-dns-cache >>>> >>>> Does anyone know a more simple way of clearing one's Cache (I'm using >>>> Catalina) >>> >>>> Is there any way to see what is currently in one's DNS cache BEFORE >>>> clearing it? >>> >>> >>> I would very much appreciate some help with this. >>> >>> It's difficult to believe that nobody in these groups has the technical >>> expertise to answer so do, please, help. TIA. >> >> I have no way to see the cache off hand, but I do have Automator actions >> set to run command line commands so I do not have to remember them. Even >> simple things like restarting the Dock. Not really needed but sometimes >> there is a small visual glitch on the Dock I like to fix. Or resetting >> launch services (sometimes apps get duplicated in the Open With menu or >> there are other similar glitches — though I have not seen that in some >> time). > > Or he can open Script Editor, paste > > do shell script "killall -HUP mDNSResponder" with administrator privileges > > and export is as an application (hence my joke about advanced cache > flushing app). Or he can create an executable bash script doing the > same. Or do something different. Sure. Lots of choice... I tend to go with a System Service because I can just click on the Finder menu and get to them, but a list off simple "app" scripts or other things might fit the needs of others better. >> So I can easily make a service where you can go to the Finder menu and >> select Service and then select the command. >> >> .... >> > > -- Personal attacks from those who troll show their own insecurity. They cannot use reason to show the message to be wrong so they try to feel somehow superior by attacking the messenger. They cling to their attacks and ignore the message time and time again.
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| From | JF Mezei <jfmezei.spamnot@vaxination.ca> |
|---|---|
| Date | 2020-07-28 19:22 -0400 |
| Subject | Re: DNS Cache questions - UNANSWERED |
| Message-ID | <Gq2UG.26296$Wl7.12753@fx26.iad> |
| In reply to | #133820 |
On 2020-07-28 03:45, David_B wrote: >> Is there any way to see what is currently in one's DNS cache BEFORE >> clearing it? If you are running a BIND server, there are tools with the control utility to see the cache. (haven't used it i a while but remember using it). But the resolver on the client machine it is much harder, not sure it eists. I beleive on OSX it is the mDNSresponder process. It also handles Bonjour services so it affects more than just DNS requests to the Internet. All I could find was "dscacheutil" and trying to do a -cachedump didn't work Not sure if utility is still supported or if just me. the dscacheutil also has an option to dump the cache dscacheutil -fliushcache man it to get more details. It may work on your system.
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| From | Wolffan <akwolffan@zoho.com> |
|---|---|
| Date | 2020-07-28 21:54 -0400 |
| Subject | Re: DNS Cache questions - UNANSWERED |
| Message-ID | <0001HW.24D10E380057E05770000D3AE38F@news.supernews.com> |
| In reply to | #133831 |
On 28 Jul 2020, JF Mezei wrote (in article <Gq2UG.26296$Wl7.12753@fx26.iad>): > On 2020-07-28 03:45, David_B wrote: > > > > Is there any way to see what is currently in one's DNS cache BEFORE > > > clearing it? > > If you are running a BIND server, there are tools with the control > utility to see the cache. (haven't used it i a while but remember using it). > > But the resolver on the client machine it is much harder, not sure it > eists. I beleive on OSX it is the mDNSresponder process. > > It also handles Bonjour services so it affects more than just DNS > requests to the Internet. > > All I could find was "dscacheutil" and trying to do a -cachedump didn't > work Not sure if utility is still supported or if just me. > > the dscacheutil also has an option to dump the cache > dscacheutil -fliushcache > > man it to get more details. It may work on your system. he thinks that x.x.x.x is a valid IP address. He doesn’t know what a loopback address is. He lacks even the faintest of clues about what dig is and where to find it. And you’re expecting him to know about BIND, mDNSresponder, and dscachutil? Good luck, there, son. He won’t even know where to start!
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| From | nospam <nospam@nospam.invalid> |
|---|---|
| Date | 2020-07-28 21:55 -0400 |
| Subject | Re: DNS Cache questions - UNANSWERED |
| Message-ID | <280720202155245719%nospam@nospam.invalid> |
| In reply to | #133838 |
In article <0001HW.24D10E380057E05770000D3AE38F@news.supernews.com>, Wolffan <akwolffan@zoho.com> wrote: > > On 2020-07-28 03:45, David_B wrote: > > > > Is there any way to see what is currently in one's DNS cache BEFORE > > > > clearing it? > > > > If you are running a BIND server, there are tools with the control > > utility to see the cache. (haven't used it i a while but remember using it). > > > > But the resolver on the client machine it is much harder, not sure it > > eists. I beleive on OSX it is the mDNSresponder process. > > > > It also handles Bonjour services so it affects more than just DNS > > requests to the Internet. > > > > All I could find was "dscacheutil" and trying to do a -cachedump didn't > > work Not sure if utility is still supported or if just me. > > > > the dscacheutil also has an option to dump the cache > > dscacheutil -fliushcache > > > > man it to get more details. It may work on your system. > > he thinks that x.x.x.x is a valid IP address. He doesn¹t know what a > loopback address is. He lacks even the faintest of clues about what dig is > and where to find it. And you¹re expecting him to know about BIND, > mDNSresponder, and dscachutil? Good luck, there, son. He won¹t even know > where to start! he's probably looking for malware in the dns cache.
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| From | Wolffan <akwolffan@zoho.com> |
|---|---|
| Date | 2020-07-28 21:59 -0400 |
| Subject | Re: DNS Cache questions - UNANSWERED |
| Message-ID | <0001HW.24D10F9B0058336270000D3AE38F@news.supernews.com> |
| In reply to | #133839 |
On 28 Jul 2020, nospam wrote (in article<280720202155245719%nospam@nospam.invalid>): > In article<0001HW.24D10E380057E05770000D3AE38F@news.supernews.com>, > Wolffan <akwolffan@zoho.com> wrote: > > > > On 2020-07-28 03:45, David_B wrote: > > > > > Is there any way to see what is currently in one's DNS cache BEFORE > > > > > clearing it? > > > > > > If you are running a BIND server, there are tools with the control > > > utility to see the cache. (haven't used it i a while but remember using > > > it). > > > > > > But the resolver on the client machine it is much harder, not sure it > > > eists. I beleive on OSX it is the mDNSresponder process. > > > > > > It also handles Bonjour services so it affects more than just DNS > > > requests to the Internet. > > > > > > All I could find was "dscacheutil" and trying to do a -cachedump didn't > > > work Not sure if utility is still supported or if just me. > > > > > > the dscacheutil also has an option to dump the cache > > > dscacheutil -fliushcache > > > > > > man it to get more details. It may work on your system. > > > > he thinks that x.x.x.x is a valid IP address. He doesn¹t know what a > > loopback address is. He lacks even the faintest of clues about what dig is > > and where to find it. And you¹re expecting him to know about BIND, > > mDNSresponder, and dscachutil? Good luck, there, son. He won¹t even know > > where to start! > > he's probably looking for malware in the dns cache. probably.
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| From | David_B <DavidB@nomail.afraid.org> |
|---|---|
| Date | 2020-07-29 08:32 +0100 |
| Subject | Re: DNS Cache questions - UNANSWERED |
| Message-ID | <GC9UG.92399$vLb.36669@fx43.ams1> |
| In reply to | #133839 |
On 29/07/2020 02:55, nospam wrote: > In article <0001HW.24D10E380057E05770000D3AE38F@news.supernews.com>, > Wolffan <akwolffan@zoho.com> wrote: > >>> On 2020-07-28 03:45, David_B wrote: >>>>> Is there any way to see what is currently in one's DNS cache BEFORE >>>>> clearing it? >>> >>> If you are running a BIND server, there are tools with the control >>> utility to see the cache. (haven't used it i a while but remember using it). >>> >>> But the resolver on the client machine it is much harder, not sure it >>> eists. I beleive on OSX it is the mDNSresponder process. >>> >>> It also handles Bonjour services so it affects more than just DNS >>> requests to the Internet. >>> >>> All I could find was "dscacheutil" and trying to do a -cachedump didn't >>> work Not sure if utility is still supported or if just me. >>> >>> the dscacheutil also has an option to dump the cache >>> dscacheutil -fliushcache >>> >>> man it to get more details. It may work on your system. >> >> he thinks that x.x.x.x is a valid IP address. He doesn¹t know what a >> loopback address is. He lacks even the faintest of clues about what dig is >> and where to find it. And you¹re expecting him to know about BIND, >> mDNSresponder, and dscachutil? Good luck, there, son. He won¹t even know >> where to start! > > he's probably looking for malware in the dns cache. Tell me, nospam, where do YOU look for malware?
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| From | Wolffan <akwolffan@zoho.com> |
|---|---|
| Date | 2020-07-29 09:10 -0400 |
| Subject | Re: DNS Cache questions - UNANSWERED |
| Message-ID | <0001HW.24D1ACC1007D08B270000D3AE38F@news.supernews.com> |
| In reply to | #133852 |
On 29 Jul 2020, David_B wrote (in article <GC9UG.92399$vLb.36669@fx43.ams1>): > On 29/07/2020 02:55, nospam wrote: > > In article<0001HW.24D10E380057E05770000D3AE38F@news.supernews.com>, > > Wolffan <akwolffan@zoho.com> wrote: > > > > > > On 2020-07-28 03:45, David_B wrote: > > > > > > Is there any way to see what is currently in one's DNS cache BEFORE > > > > > > clearing it? > > > > > > > > If you are running a BIND server, there are tools with the control > > > > utility to see the cache. (haven't used it i a while but remember using > > > > it). > > > > > > > > But the resolver on the client machine it is much harder, not sure it > > > > eists. I beleive on OSX it is the mDNSresponder process. > > > > > > > > It also handles Bonjour services so it affects more than just DNS > > > > requests to the Internet. > > > > > > > > All I could find was "dscacheutil" and trying to do a -cachedump didn't > > > > work Not sure if utility is still supported or if just me. > > > > > > > > the dscacheutil also has an option to dump the cache > > > > dscacheutil -fliushcache > > > > > > > > man it to get more details. It may work on your system. > > > > > > he thinks that x.x.x.x is a valid IP address. He doesn¹t know what a > > > loopback address is. He lacks even the faintest of clues about what dig is > > > and where to find it. And you¹re expecting him to know about BIND, > > > mDNSresponder, and dscachutil? Good luck, there, son. He won¹t even know > > > where to start! > > > > he's probably looking for malware in the dns cache. > > Tell me, nospam, where do YOU look for malware? Simple: look at URIs posted by David Brooks. He’s know to post URIs pointing to sites infected by fake Flash installers which actually attempt to download banking RATs.
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| From | David_B <DavidB@nomail.afraid.org> |
|---|---|
| Date | 2020-07-29 17:26 +0100 |
| Subject | Re: DNS Cache questions |
| Message-ID | <ZqhUG.230916$iXb1.79605@fx03.ams1> |
| In reply to | #133858 |
On 29/07/2020 14:10, *Wolffan LIED* again! > On 29 Jul 2020, David_B wrote > (in article <GC9UG.92399$vLb.36669@fx43.ams1>): > >> On 29/07/2020 02:55, nospam wrote: >>> In article<0001HW.24D10E380057E05770000D3AE38F@news.supernews.com>, >>> Wolffan <akwolffan@zoho.com> wrote: >>> >>>>> On 2020-07-28 03:45, David_B wrote: >>>>>>> Is there any way to see what is currently in one's DNS cache BEFORE >>>>>>> clearing it? >>>>> >>>>> If you are running a BIND server, there are tools with the control >>>>> utility to see the cache. (haven't used it i a while but remember using >>>>> it). >>>>> >>>>> But the resolver on the client machine it is much harder, not sure it >>>>> eists. I beleive on OSX it is the mDNSresponder process. >>>>> >>>>> It also handles Bonjour services so it affects more than just DNS >>>>> requests to the Internet. >>>>> >>>>> All I could find was "dscacheutil" and trying to do a -cachedump didn't >>>>> work Not sure if utility is still supported or if just me. >>>>> >>>>> the dscacheutil also has an option to dump the cache >>>>> dscacheutil -fliushcache >>>>> >>>>> man it to get more details. It may work on your system. >>>> >>>> he thinks that x.x.x.x is a valid IP address. He doesn¹t know what a >>>> loopback address is. He lacks even the faintest of clues about what dig is >>>> and where to find it. And you¹re expecting him to know about BIND, >>>> mDNSresponder, and dscachutil? Good luck, there, son. He won¹t even know >>>> where to start! >>> >>> he's probably looking for malware in the dns cache. >> >> Tell me, nospam, where do YOU look for malware? > > Simple: look at URIs posted by David Brooks. He’s known to post URIs > pointing to sites infected by fake Flash installers which actually attempt to > download banking RATs. Complete bollocks, Wolffan! You've claimed that MANY times yet have *NEVER* shown evidence.
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| From | Alan Baker <notonyourlife@no.no.no.no> |
|---|---|
| Date | 2020-07-29 09:36 -0700 |
| Subject | Re: DNS Cache questions |
| Message-ID | <rfs8ig$h68$1@dont-email.me> |
| In reply to | #133861 |
On 2020-07-29 9:26 a.m., David_B wrote: > On 29/07/2020 14:10, *Wolffan LIED* again! > >> On 29 Jul 2020, David_B wrote >> (in article <GC9UG.92399$vLb.36669@fx43.ams1>): >> >>> On 29/07/2020 02:55, nospam wrote: >>>> In article<0001HW.24D10E380057E05770000D3AE38F@news.supernews.com>, >>>> Wolffan <akwolffan@zoho.com> wrote: >>>> >>>>>> On 2020-07-28 03:45, David_B wrote: >>>>>>>> Is there any way to see what is currently in one's DNS cache BEFORE >>>>>>>> clearing it? >>>>>> >>>>>> If you are running a BIND server, there are tools with the control >>>>>> utility to see the cache. (haven't used it i a while but remember >>>>>> using >>>>>> it). >>>>>> >>>>>> But the resolver on the client machine it is much harder, not sure it >>>>>> eists. I beleive on OSX it is the mDNSresponder process. >>>>>> >>>>>> It also handles Bonjour services so it affects more than just DNS >>>>>> requests to the Internet. >>>>>> >>>>>> All I could find was "dscacheutil" and trying to do a -cachedump >>>>>> didn't >>>>>> work Not sure if utility is still supported or if just me. >>>>>> >>>>>> the dscacheutil also has an option to dump the cache >>>>>> dscacheutil -fliushcache >>>>>> >>>>>> man it to get more details. It may work on your system. >>>>> >>>>> he thinks that x.x.x.x is a valid IP address. He doesn¹t know what a >>>>> loopback address is. He lacks even the faintest of clues about what >>>>> dig is >>>>> and where to find it. And you¹re expecting him to know about BIND, >>>>> mDNSresponder, and dscachutil? Good luck, there, son. He won¹t even >>>>> know >>>>> where to start! >>>> >>>> he's probably looking for malware in the dns cache. >>> >>> Tell me, nospam, where do YOU look for malware? >> >> Simple: look at URIs posted by David Brooks. He’s known to post URIs >> pointing to sites infected by fake Flash installers which actually >> attempt to >> download banking RATs. > > Complete bollocks, Wolffan! > > You've claimed that MANY times yet have *NEVER* shown evidence. > And yet, the very fact that you claim it's a lie makes me believe it's true.
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| From | nospam <nospam@nospam.invalid> |
|---|---|
| Date | 2020-07-29 13:12 -0400 |
| Subject | Re: DNS Cache questions |
| Message-ID | <290720201312345727%nospam@nospam.invalid> |
| In reply to | #133862 |
In article <rfs8ig$h68$1@dont-email.me>, Alan Baker <notonyourlife@no.no.no.no> wrote: > >>>>> > >>>>> he thinks that x.x.x.x is a valid IP address. He doesn1t know what a > >>>>> loopback address is. He lacks even the faintest of clues about what > >>>>> dig is > >>>>> and where to find it. And you1re expecting him to know about BIND, > >>>>> mDNSresponder, and dscachutil? Good luck, there, son. He won1t even > >>>>> know > >>>>> where to start! > >>>> > >>>> he's probably looking for malware in the dns cache. > >>> > >>> Tell me, nospam, where do YOU look for malware? > >> > >> Simple: look at URIs posted by David Brooks. He¹s known to post URIs > >> pointing to sites infected by fake Flash installers which actually > >> attempt to download banking RATs. > > > > Complete bollocks, Wolffan! > > > > You've claimed that MANY times yet have *NEVER* shown evidence. > > > > And yet, the very fact that you claim it's a lie makes me believe it's true. it's definitely true. many of his links are dangerous.
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