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Internet connection

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  Internet connection Michelle <michelle@michelle.org> - 2014-02-08 16:43 +0000
    Re: Internet connection Alan Browne <alan.browne@FreelunchVideotron.ca> - 2014-02-08 11:53 -0500
      Re: Internet connection Michelle <michelle@michelle.org> - 2014-02-08 17:13 +0000
        Re: Internet connection Alan Browne <alan.browne@FreelunchVideotron.ca> - 2014-02-08 12:18 -0500
          Re: Internet connection Michelle Steiner <michelle@michelle.org> - 2014-02-08 10:35 -0700
        Re: Internet connection Jolly Roger <jollyroger@pobox.com> - 2014-02-08 17:25 +0000
          Re: Internet connection Michelle Steiner <michelle@michelle.org> - 2014-02-08 10:37 -0700
            Re: Internet connection Jolly Roger <jollyroger@pobox.com> - 2014-02-08 21:09 +0000
    Re: Internet connection Warren Oates <warren.oates@gmail.com> - 2014-02-08 12:27 -0500
      Re: Internet connection Michelle Steiner <michelle@michelle.org> - 2014-02-08 10:38 -0700
        Re: Internet connection Michael Vilain <vilain@NOspamcop.net> - 2014-02-08 17:16 -0800
    Re: Internet connection David Ritz <dritz@mindspring.com> - 2014-02-08 11:38 -0600
    Re: Internet connection JF Mezei <jfmezei.spamnot@vaxination.ca> - 2014-02-08 12:59 -0500

#56225 — Internet connection

I can't connect to the internet with my iMac. Itried connecting with
Ethernet and via wifi to my router with no success. But my iPhone can
connect, using the same router and cable modem. I turned off mobile data on
the iPhone to make sure the connection was through the router. 

If this doesn't clear up, I'll have to take the computer to the Genius Bar.
Any suggestions for trouble shooting before I have to resort to that?

-- Michelle

-- 
Sent from my iPhone

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#56227

On 2014.02.08, 11:43 , Michelle wrote:
> I can't connect to the internet with my iMac. Itried connecting with
> Ethernet and via wifi to my router with no success. But my iPhone can
> connect, using the same router and cable modem. I turned off mobile data on
> the iPhone to make sure the connection was through the router.
>
> If this doesn't clear up, I'll have to take the computer to the Genius Bar.
> Any suggestions for trouble shooting before I have to resort to that?

- restart your router (unplug and replug is usually enough, or maybe 30+ 
seconds)
- turn off, and turn back on the WiFi service in the router menu
- force a new DHCP reservation in the router menus (I seem to recall you 
set it to some really long period)
- force a new DHCP reservation in sys prefs - (Disconnect/Connect)
- restart your computer
- restart your cable modem - I know this doesn't sound right, but it has 
cleared things here before.

I very much doubt you need to go to the g-bar.

-- 
   Those who have reduced our privacy, whether they are state
   or commercial actors, prefer that we do not reduce theirs.
                  - Jaron Lanier, Scientific American, 2013.11.

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#56229

Alan Browne <alan.browne@FreelunchVideotron.ca> wrote:
> On 2014.02.08, 11:43 , Michelle wrote:
>> I can't connect to the internet with my iMac. Itried connecting with
>> Ethernet and via wifi to my router with no success. But my iPhone can
>> connect, using the same router and cable modem. I turned off mobile data on
>> the iPhone to make sure the connection was through the router.
>> 
>> If this doesn't clear up, I'll have to take the computer to the Genius Bar.
>> Any suggestions for trouble shooting before I have to resort to that?
> 
> - restart your router (unplug and replug is usually enough, or maybe 30+ seconds)
> - turn off, and turn back on the WiFi service in the router menu
> - force a new DHCP reservation in the router menus (I seem to recall you
> set it to some really long period)
> - force a new DHCP reservation in sys prefs - (Disconnect/Connect)
> - restart your computer
> - restart your cable modem - I know this doesn't sound right, but it has
> cleared things here before.
> 
> I very much doubt you need to go to the g-bar.

I tried all of the physical items except turning off the computer.  I'll
try turning it off and on; if that doesn't work, I'll try the software
suggestions.

Thanks

-- Michelle
-- 
Sent from my iPad

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#56230

On 2014.02.08, 12:13 , Michelle wrote:
> Alan Browne <alan.browne@FreelunchVideotron.ca> wrote:
>> On 2014.02.08, 11:43 , Michelle wrote:
>>> I can't connect to the internet with my iMac. Itried connecting with
>>> Ethernet and via wifi to my router with no success. But my iPhone can
>>> connect, using the same router and cable modem. I turned off mobile data on
>>> the iPhone to make sure the connection was through the router.
>>>
>>> If this doesn't clear up, I'll have to take the computer to the Genius Bar.
>>> Any suggestions for trouble shooting before I have to resort to that?
>>
>> - restart your router (unplug and replug is usually enough, or maybe 30+ seconds)
>> - turn off, and turn back on the WiFi service in the router menu
>> - force a new DHCP reservation in the router menus (I seem to recall you
>> set it to some really long period)
>> - force a new DHCP reservation in sys prefs - (Disconnect/Connect)
>> - restart your computer
>> - restart your cable modem - I know this doesn't sound right, but it has
>> cleared things here before.
>>
>> I very much doubt you need to go to the g-bar.
>
> I tried all of the physical items except turning off the computer.  I'll
> try turning it off and on; if that doesn't work, I'll try the software
> suggestions.

Assuming this gets to you, restarting the computer should be the last 
thing.  Forcing DHCP reservation renewal is a pretty good bet.

-- 
   Privacy has become an essential personal chore that most
   people are not trained to perform.
                  - Jaron Lanier, Scientific American, 2013.11.

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#56234

In article <O7KdneyqAdZV-2vPnZ2dnUVZ_uidnZ2d@giganews.com>, Alan Browne
<alan.browne@FreelunchVideotron.ca> wrote:

> > I tried all of the physical items except turning off the computer.  I'll
> > try turning it off and on; if that doesn't work, I'll try the software
> > suggestions.
> 
> Assuming this gets to you, restarting the computer should be the last 
> thing.  Forcing DHCP reservation renewal is a pretty good bet.

I turned off the computer, turned it back on, and went to do some
household chores while it restarted; now it works.

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#56231

On 2014-02-08, Michelle <michelle@michelle.org> wrote:
> Alan Browne <alan.browne@FreelunchVideotron.ca> wrote:
>> On 2014.02.08, 11:43 , Michelle wrote:
>>>
>>> I can't connect to the internet with my iMac. Itried connecting with
>>> Ethernet and via wifi to my router with no success. But my iPhone
>>> can connect, using the same router and cable modem. I turned off
>>> mobile data on the iPhone to make sure the connection was through
>>> the router.
>>> 
>>> If this doesn't clear up, I'll have to take the computer to the
>>> Genius Bar.  Any suggestions for trouble shooting before I have to
>>> resort to that?
>> 
>> - restart your router (unplug and replug is usually enough, or maybe
>> 30+ seconds) 
>> - turn off, and turn back on the WiFi service in the router menu 
>> - force a new DHCP reservation in the router menus (I seem to recall
>> you set it to some really long period)
>> - force a new DHCP reservation in sys prefs
>> - (Disconnect/Connect)
>> - restart your computer
>> - restart your cable modem
>> - I know this doesn't sound right, but it has cleared things here
>> before.
>> 
>> I very much doubt you need to go to the g-bar.
>
> I tried all of the physical items except turning off the computer.
> I'll try turning it off and on; if that doesn't work, I'll try the
> software suggestions.

Is your router perhaps configured with MAC filtering enabled? If so, you
probably need to add the iMac's MAC address(es) to allow it to join the
network. Also, I recommend turning that feature off - more trouble than
it's worth.

What are the symptoms? Do you get an IP address in System Preferences >
Network at all? If so, what is it? Are there values in the Router, DNS,
and Search Domains fields?

Have you checked the system / console logs to see if there are any
messages posted there when you try to connect?

-- 
E-mail sent to this address may be devoured by my ravenous SPAM filter.
I often ignore posts from Google. Use a real news client instead.

JR

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#56236

In article <bln7krFmsdjU5@mid.individual.net>, Jolly Roger
<jollyroger@pobox.com> wrote:

> Is your router perhaps configured with MAC filtering enabled? If so, you
> probably need to add the iMac's MAC address(es) to allow it to join the
> network. Also, I recommend turning that feature off - more trouble than
> it's worth.

Never had it turned on.

> What are the symptoms? Do you get an IP address in System Preferences >
> Network at all? If so, what is it? Are there values in the Router, DNS,
> and Search Domains fields?

There were values in all those fields.

> Have you checked the system / console logs to see if there are any
> messages posted there when you try to connect?

I didn't check there, but I did use connection doctor; it wasn't very
helpful, though.

As I wrote to Alan, turning the computer off and then on again fixed
the problem.

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#56252

On 2014-02-08, Michelle Steiner <michelle@michelle.org> wrote:
> In article <bln7krFmsdjU5@mid.individual.net>, Jolly Roger
><jollyroger@pobox.com> wrote:
>
>> Is your router perhaps configured with MAC filtering enabled? If so, you
>> probably need to add the iMac's MAC address(es) to allow it to join the
>> network. Also, I recommend turning that feature off - more trouble than
>> it's worth.
>
> Never had it turned on.
>
>> What are the symptoms? Do you get an IP address in System Preferences >
>> Network at all? If so, what is it? Are there values in the Router, DNS,
>> and Search Domains fields?
>
> There were values in all those fields.

That's not what I asked.

>> Have you checked the system / console logs to see if there are any
>> messages posted there when you try to connect?
>
> I didn't check there, but I did use connection doctor; it wasn't very
> helpful, though.
>
> As I wrote to Alan, turning the computer off and then on again fixed
> the problem.

Ok.

-- 
E-mail sent to this address may be devoured by my ravenous SPAM filter.
I often ignore posts from Google. Use a real news client instead.

JR

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#56233

In article 
<695223331413570212.800775michelle-michelle.org@news.eternal-september.o
rg>,
 Michelle <michelle@michelle.org> wrote:

> I can't connect to the internet with my iMac. Itried connecting with
> Ethernet and via wifi to my router with no success. But my iPhone can
> connect, using the same router and cable modem. I turned off mobile data on
> the iPhone to make sure the connection was through the router. 
> 
> If this doesn't clear up, I'll have to take the computer to the Genius Bar.
> Any suggestions for trouble shooting before I have to resort to that?
> 
> -- Michelle

Can you connect to the router's setup page?
-- 
Where's the Vangelis music?
Pris' tongue is sticking out in in the wide shot after Batty has kissed her.
They have put back more tits into the Zhora dressing  room scene.
  -- notes for Blade Runner

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#56238

In article <52f66916$0$50734$c3e8da3$92d0a893@news.astraweb.com>,
Warren Oates <warren.oates@gmail.com> wrote:

> Can you connect to the router's setup page?

The router is an Airport Extreme, but I had not tried using the Airport
app.  I should have.

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#56267

In article <080220141038584677%michelle@michelle.org>,
 Michelle Steiner <michelle@michelle.org> wrote:

> In article <52f66916$0$50734$c3e8da3$92d0a893@news.astraweb.com>,
> Warren Oates <warren.oates@gmail.com> wrote:
> 
> > Can you connect to the router's setup page?
> 
> The router is an Airport Extreme, but I had not tried using the Airport
> app.  I should have.

From the terminal, you can do a bunch of things to diagnose the 
connectivity problem.



Are your network interfaces active?  ifconfig -a will show you that.

% ifconfig -a
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384
   options=3<RXCSUM,TXCSUM>
   inet6 fe80::1%lo0 prefixlen 64 scopeid 0x1 
   inet 127.0.0.1 netmask 0xff000000 
   inet6 ::1 prefixlen 128 
gif0: flags=8010<POINTOPOINT,MULTICAST> mtu 1280
stf0: flags=0<> mtu 1280
en0: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500
   options=b<RXCSUM,TXCSUM,VLAN_HWTAGGING>
   ether 00:25:00:f2:0a:c2 
   inet6 fe80::225:ff:fef2:ac2%en0 prefixlen 64 scopeid 0x4 
   inet 192.168.1.101 netmask 0xffffff00 broadcast 192.168.1.255
   media: autoselect (100baseTX <full-duplex>)
   status: active
en1: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500
   options=b<RXCSUM,TXCSUM,VLAN_HWTAGGING>
   ether 00:25:00:f2:58:4a 
   media: autoselect (<unknown type>)
   status: inactive
en2: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500
   ether 90:f6:52:e5:87:d6 
   inet6 fe80::92f6:52ff:fee5:87d6%en2 prefixlen 64 scopeid 0x6 
   inet 192.168.1.76 netmask 0xffffff00 broadcast 192.168.1.255
   media: autoselect
   status: active
p2p0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 2304
   ether 02:f6:52:e5:87:d6 
   media: autoselect
   status: active
fw0: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 4078
   lladdr 04:1e:64:ff:fe:f9:78:d6 
   media: autoselect <full-duplex>
   status: inactive




Can you ping the router's IP address?

% ping 192.168.1.254
PING 192.168.1.254 (192.168.1.254): 56 data bytes
64 bytes from 192.168.1.254: icmp_seq=0 ttl=255 time=1.438 ms
64 bytes from 192.168.1.254: icmp_seq=1 ttl=255 time=1.276 ms
64 bytes from 192.168.1.254: icmp_seq=2 ttl=255 time=1.660 ms
64 bytes from 192.168.1.254: icmp_seq=3 ttl=255 time=1.272 ms
^C
--- 192.168.1.254 ping statistics ---
4 packets transmitted, 4 packets received, 0.0% packet loss
round-trip min/avg/max/stddev = 1.272/1.411/1.660/0.158 ms



Can you ping your phone's IP address?  It should have one if it's on 
your network.

% ping 192.168.1.70
PING 192.168.1.70 (192.168.1.70): 56 data bytes
64 bytes from 192.168.1.70: icmp_seq=0 ttl=64 time=94.528 ms
64 bytes from 192.168.1.70: icmp_seq=1 ttl=64 time=122.016 ms
64 bytes from 192.168.1.70: icmp_seq=2 ttl=64 time=35.204 ms
64 bytes from 192.168.1.70: icmp_seq=3 ttl=64 time=57.032 ms
64 bytes from 192.168.1.70: icmp_seq=4 ttl=64 time=80.157 ms
64 bytes from 192.168.1.70: icmp_seq=5 ttl=64 time=103.782 ms
^C
--- 192.168.1.70 ping statistics ---
6 packets transmitted, 6 packets received, 0.0% packet loss
round-trip min/avg/max/stddev = 35.204/82.120/122.016/29.009 ms



What's the routing information?  netstat -nr will show you that.

% netstat -nr
Routing tables

Internet:
Destination        Gateway            Flags        Refs      Use   Netif 
Expire
default            192.168.1.254      UGSc           37        0     en0
default            192.168.1.254      UGScI           0        0     en2
127                127.0.0.1          UCS             0        0     lo0
127.0.0.1          127.0.0.1          UH             11   367926     lo0
169.254            link#4             UCS             0        0     en0
192.168.1          link#4             UCS             5        0     en0
192.168.1          link#6             UCSI            4        0     en2
192.168.1.68       68:a8:6d:4a:d1:6e  UHLWIi          0        0     en0    
972
192.168.1.68       68:a8:6d:4a:d1:6e  UHLWIi          0        0     en2    
972
192.168.1.69       3c:7:54:6a:34:68   UHLWIi          0        0     en0    
972
192.168.1.69       3c:7:54:6a:34:68   UHLWIi          0        0     en2    
973
192.168.1.70       18:e7:f4:19:68:e9  UHLWIi          0        6     en0   
1172
192.168.1.76       127.0.0.1          UHS             0        6     lo0
192.168.1.101      127.0.0.1          UHS             2        6     lo0
192.168.1.254      0:21:7c:89:2a:81   UHLWIir        38     3891     en0   
1200
192.168.1.254      0:21:7c:89:2a:81   UHLWIi          0        0     en2   
1200
192.168.1.255      ff:ff:ff:ff:ff:ff  UHLWbI          0       47     en0
192.168.1.255      ff:ff:ff:ff:ff:ff  UHLWbI          0        3     en2



If you see the router as the default gateway, then can you ping anything 
on the outside, like one of google's DNS servers

% ping 8.8.8.8
PING 8.8.8.8 (8.8.8.8): 56 data bytes
64 bytes from 8.8.8.8: icmp_seq=0 ttl=49 time=43.348 ms
64 bytes from 8.8.8.8: icmp_seq=1 ttl=45 time=43.282 ms
64 bytes from 8.8.8.8: icmp_seq=2 ttl=49 time=42.012 ms
64 bytes from 8.8.8.8: icmp_seq=3 ttl=45 time=42.747 ms
64 bytes from 8.8.8.8: icmp_seq=4 ttl=49 time=42.191 ms
^C
--- 8.8.8.8 ping statistics ---
5 packets transmitted, 5 packets received, 0.0% packet loss
round-trip min/avg/max/stddev = 42.012/42.716/43.348/0.546 ms


If you can see packets outside your network (e.g. to google's DNS), then 
your network is routing them OK.  If you try the same with a name 
instead of an IP address and it works, then your network should be OK.

% ping www.google.com
PING www.google.com (74.125.194.106): 56 data bytes
64 bytes from 74.125.194.106: icmp_seq=0 ttl=45 time=72.828 ms
64 bytes from 74.125.194.106: icmp_seq=1 ttl=45 time=71.311 ms
64 bytes from 74.125.194.106: icmp_seq=2 ttl=45 time=71.884 ms
64 bytes from 74.125.194.106: icmp_seq=3 ttl=45 time=71.403 ms
64 bytes from 74.125.194.106: icmp_seq=4 ttl=45 time=71.563 ms
^C
--- www.google.com ping statistics ---
5 packets transmitted, 5 packets received, 0.0% packet loss
round-trip min/avg/max/stddev = 71.311/71.798/72.828/0.551 ms


At some point along this tree, something will fail.  If you can't get 
outside your network, your ISP may be having an outage.  It happens 
sometimes.  Go to a movie and see if it's working when you get home.

If you can't ping the AE, then it might be the problem.  What happens if 
you plug the cable modem directly into your system?

-- 
DeeDee, don't press that button!  DeeDee!  NO!  Dee...
[I filter all Goggle Groups posts, so any reply may be automatically ignored]

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#56237

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

On Saturday, 08 February 2014 16:43 -0000, 
 in article <695223331413570212.800775michelle-michelle.org@news.eternal-september.org>, 
 Michelle <michelle@michelle.org> wrote:

> I can't connect to the internet with my iMac. Itried connecting with 
> Ethernet and via wifi to my router with no success. But my iPhone 
> can connect, using the same router and cable modem. I turned off 
> mobile data on the iPhone to make sure the connection was through 
> the router.

> If this doesn't clear up, I'll have to take the computer to the 
> Genius Bar. Any suggestions for trouble shooting before I have to 
> resort to that?

Michelle, what are the IPv4 addresses you're seeing in the System 
Preferences => Network pane?  From the description, it sounds as 
though they may be self (internal) assigned IP addresses.  These may 
be recognizable, as appearing in ranges, outside what you've set up 
for your DHCP.  If this is what you're seeing, Alan's responses are 
good, though you may be able to narrow things down, depending on the 
way your LAN is set up.

If your modem or gateway are also assigning addresses on the LAN, 
using DHCP, shut down the computer, unplug the router for about thirty 
seconds.  After plugging the router back in, wait until its connection 
to the Internet has been established, then boot up.

If you are using an outboard router, instead of one in your modem or 
gateway, you can leave the modem alone, and follow the same steps, as 
above, only by unplugging the router, while the computer is turned 
off..

With a little luck, all should be well.

- -- 
David Ritz <dritz@mindspring.com>
 Be kind to animals; kiss a shark.

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#56243

On 14-02-08 11:43, Michelle wrote:
> I can't connect to the internet with my iMac. 

Forget wi-fi for now, try to debig the wired one.

In the system preferences/network , does the ethernet show up as green
or red ? (It should show "Connected" or "Not Connected" below Ethernet 1

If your ethernet is connected, then select it, click "Advanced" and TCPIP:

What is the IPv4 Address subnet and router that are there ?

If DHCP fails, then you get self assigned IP address


If your ethernet is not connected, then in Advanced, click "ethernet".
Is it set to negotiate automatically ? Plug and unploug the ethernet
cable at both ends to make sure it is done right.


If the ethernet is connected, then you likely have a DHCP problem , so
more questiosn on how to debug will follow.

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