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Groups > comp.os.linux.networking > #4638
| From | Lew Pitcher <lew.pitcher@digitalfreehold.ca> |
|---|---|
| Newsgroups | comp.os.linux.networking |
| Subject | Re: ftp,ssh,http blocked by ISP? |
| Date | 2020-07-18 13:26 -0400 |
| Organization | The Pitcher Digital Freehold |
| Message-ID | <revbbl$i05$1@dont-email.me> (permalink) |
| References | <reuqg2$cvg$1@dont-email.me> |
On July 18, 2020 08:38, Bob Tennent wrote: > For years I've used port-forwarding in my router to allow > external access to ftp, ssh, and http servers. Recently, > this no longer works. The servers are running normally and > can be accessed internally. I can even access them via the > router IP address, showing that port-forwarding is still > working. I've also tried port-fowarding and DMZ in the > modem, to no avail. So my conjecture is that the ISP has > decided to block packets it considers unworthy before they > reach the modem. > > Is this at all likely? Yes, it is likely. Many big ISPs block "server" ports, especially on their "consumer"-level offerings. It is possible that your ISP has changed their policy, and is now blocking ports. > How can I test/confirm the conjecture? You could portscan your internet-facing IP address from outside your lan. You could use https://pentest-tools.com/network-vulnerability-scanning/tcp-port-scanner-online-nmap or https://www.grc.com/x/ne.dll?bh0bkyd2 > If it is confirmed, what can I do? Either - move your services to ports not blocked by your ISP, or - lease a commercial-level offering from your ISP, or - get a new ISP > Needless to say, ISP "technical support" has so far been useless. Yah. And, if the ISP has a policy (see their "Terms Of Use") of not permitting their clients to have servers, you /might/ run into a bit of "contract trouble" with your ISP if their technical support reports you. -- Lew Pitcher "In Skills, We Trust"
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ftp,ssh,http blocked by ISP? Bob Tennent <rdtennent@tennent.ca> - 2020-07-18 12:38 +0000
Re: ftp,ssh,http blocked by ISP? Dan Purgert <dan@djph.net> - 2020-07-18 14:59 +0000
Re: ftp,ssh,http blocked by ISP? William Unruh <unruh@invalid.ca> - 2020-07-18 15:15 +0000
Re: ftp,ssh,http blocked by ISP? Tauno Voipio <tauno.voipio@notused.fi.invalid> - 2020-07-18 20:01 +0300
Re: ftp,ssh,http blocked by ISP? William Unruh <unruh@invalid.ca> - 2020-07-18 22:06 +0000
Re: ftp,ssh,http blocked by ISP? Bob Tennent <rdtennent@tennent.ca> - 2020-07-18 16:35 +0000
Re: ftp,ssh,http blocked by ISP? Ken Hart <kwhart1@frontier.com> - 2020-07-18 11:12 -0400
Re: ftp,ssh,http blocked by ISP? Bob Tennent <rdtennent@tennent.ca> - 2020-07-18 16:44 +0000
Re: ftp,ssh,http blocked by ISP? John McCue <jmccue@jmclin1.hsd1.ma.comcast.net> - 2020-07-18 16:33 +0000
Re: ftp,ssh,http blocked by ISP? Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2020-07-18 13:26 -0400
Re: ftp,ssh,http blocked by ISP? Bob Tennent <rdtennent@tennent.ca> - 2020-07-18 17:56 +0000
Re: ftp,ssh,http blocked by ISP? Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2020-07-18 14:36 -0400
Re: ftp,ssh,http blocked by ISP? Bob Tennent <rdtennent@tennent.ca> - 2020-07-18 19:06 +0000
Re: ftp,ssh,http blocked by ISP? William Unruh <unruh@invalid.ca> - 2020-07-18 22:13 +0000
Re: ftp,ssh,http blocked by ISP? "David W. Hodgins" <dwhodgins@nomail.afraid.org> - 2020-07-18 19:36 -0400
Re: ftp,ssh,http blocked by ISP? "Carlos E.R." <robin_listas@es.invalid> - 2020-07-19 12:56 +0200
Re: ftp,ssh,http blocked by ISP? Johann Beretta <beretta@nun-ya-bizness.com> - 2020-07-28 21:26 -0700
Re: ftp,ssh,http blocked by ISP? "Carlos E.R." <robin_listas@es.invalid> - 2020-07-29 10:40 +0200
Re: ftp,ssh,http blocked by ISP? Johann Beretta <beretta@nun-ya-bizness.com> - 2020-08-01 21:22 -0700
Re: ftp,ssh,http blocked by ISP? "Carlos E.R." <robin_listas@es.invalid> - 2020-08-02 13:16 +0200
Re: ftp,ssh,http blocked by ISP? Johann Beretta <beretta@nun-ya-bizness.com> - 2020-08-03 13:57 -0700
Re: ftp,ssh,http blocked by ISP? "Carlos E.R." <robin_listas@es.invalid> - 2020-08-03 23:07 +0200
Re: ftp,ssh,http blocked by ISP? Bob Tennent <rdtennent@tennent.ca> - 2020-07-19 01:40 +0000
Re: ftp,ssh,http blocked by ISP? "David W. Hodgins" <dwhodgins@nomail.afraid.org> - 2020-07-18 22:10 -0400
Re: ftp,ssh,http blocked by ISP? "Carlos E.R." <robin_listas@es.invalid> - 2020-07-19 12:59 +0200
Re: ftp,ssh,http blocked by ISP? Giovanni <lsodgf0@home.net.it> - 2020-07-19 10:10 +0200
Re: ftp,ssh,http blocked by ISP? Marc Haber <mh+usenetspam1118@zugschl.us> - 2020-07-19 15:09 +0200
Re: ftp,ssh,http blocked by ISP? William Unruh <unruh@invalid.ca> - 2020-07-19 17:35 +0000
Re: ftp,ssh,http blocked by ISP? Bob Tennent <rdtennent@tennent.ca> - 2020-07-20 02:33 +0000
Re: ftp,ssh,http blocked by ISP? William Unruh <unruh@invalid.ca> - 2020-07-20 02:55 +0000
Re: ftp,ssh,http blocked by ISP? "David W. Hodgins" <dwhodgins@nomail.afraid.org> - 2020-07-19 23:32 -0400
Re: ftp,ssh,http blocked by ISP? "David W. Hodgins" <dwhodgins@nomail.afraid.org> - 2020-07-19 23:46 -0400
Re: ftp,ssh,http blocked by ISP? Bob Tennent <rdtennent@tennent.ca> - 2020-07-20 06:01 +0000
Re: ftp,ssh,http blocked by ISP? "David W. Hodgins" <dwhodgins@nomail.afraid.org> - 2020-07-20 20:16 -0400
Re: ftp,ssh,http blocked by ISP? Johann Beretta <beretta@nun-ya-bizness.com> - 2020-08-01 21:24 -0700
Re: ftp,ssh,http blocked by ISP? Giovanni <lsodgf0@home.net.it> - 2020-07-20 09:10 +0200
Re: ftp,ssh,http blocked by ISP? Bob Tennent <rdtennent@tennent.ca> - 2020-07-20 11:31 +0000
Re: ftp,ssh,http blocked by ISP? Tauno Voipio <tauno.voipio@notused.fi.invalid> - 2020-07-20 17:49 +0300
Re: ftp,ssh,http blocked by ISP? Bob Tennent <rdtennent@tennent.ca> - 2020-07-20 15:32 +0000
Re: ftp,ssh,http blocked by ISP? Tauno Voipio <tauno.voipio@notused.fi.invalid> - 2020-07-20 21:01 +0300
Re: ftp,ssh,http blocked by ISP? Bit Twister <BitTwister@mouse-potato.com> - 2020-07-20 13:04 -0500
Re: ftp,ssh,http blocked by ISP? William Unruh <unruh@invalid.ca> - 2020-07-20 20:11 +0000
Re: ftp,ssh,http blocked by ISP? Bob Tennent <rdtennent@tennent.ca> - 2020-07-20 20:42 +0000
Re: ftp,ssh,http blocked by ISP? William Unruh <unruh@invalid.ca> - 2020-07-20 21:11 +0000
Re: ftp,ssh,http blocked by ISP? Bob Tennent <rdtennent@tennent.ca> - 2020-07-21 01:52 +0000
Re: ftp,ssh,http blocked by ISP? dyrmak <dyrmak@quelite.terre.invalid> - 2020-07-21 08:35 +0000
Re: ftp,ssh,http blocked by ISP? Bob Tennent <rdtennent@tennent.ca> - 2020-07-21 10:34 +0000
Re: ftp,ssh,http blocked by ISP? Giovanni <lsodgf0@home.net.it> - 2020-07-21 13:48 +0200
Re: ftp,ssh,http blocked by ISP? Bob Tennent <rdtennent@tennent.ca> - 2020-07-21 13:35 +0000
Re: ftp,ssh,http blocked by ISP? "Carlos E.R." <robin_listas@es.invalid> - 2020-07-21 16:03 +0200
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