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Groups > comp.os.linux.networking > #693

Re: Only some IPs accessable?

Cross-posted to 2 groups.

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"Chris Davies" <chris-usenet@roaima.co.uk> wrote in message 
news:ogv5m8xn5a.ln2@news.roaima.co.uk...
> NoHtmlMailsPlease <UsePlainText@dog.edu> wrote:
>> After I got my 10 years old pppd-script modified sufficiently
>> to connect the fixed-wireless-modem, as confirmed by
>> /var/log/messages     reporting:
>> CHAP authenticated,
>> <a local IP> allocated,
>> 2 DNSs allocated;
>> I still wasn't able to: lynx <URL>,
>
>> First I suspected the DNSs allocated by the ISP:
>>Oct  5 18:20:44 labeas pppd[4599]: secondary DNS address 41.164.0.11
>>   but both pinged OK:
>
[snip]

> Personally, I think I'd go back to basics and ignore lynx initially -
> it's confusing you and therefore muddying the water.
>
> 1. Can you ping your assigned DNS servers? (Yes)
> 2. Can you resolve hosts from at least one of the assigned DNS servers? 
> (Yes)
>
> 3. Has your /etc/resolv.conf been updated with these DNS servers?
>
> I suspect the answer to #3 is "no", in which case you just need to update
> your ppp configuration to tell it to do so. However, in case it's yes
> I've provided the following additional suggestions -
>
> 4. Can you ping 188.222.203.136?
>
> 5. Can you ping test.www.roaima.co.uk?
>
> 6. If you "lynx http://test.www.roaima.co.uk/", do you get my test page?
>
> If yes then I'd say that the networking layer is fine. Otherwise,
> exclude DNS and try again -
>
> 7. Add this line to your /etc/hosts file:
>
> 188.222.203.136 test.www.roaima.co.uk
>
> Then, when you "lynx http://test.www.roaima.co.uk/" do you get my test
> page this time?
>
> If the answer to this is no, then it's time to start digging really
> seriously into files such as /etc/nsswitch.conf (what does the "files"
> line read as?) and possibly checking your networking libraries.
==================== 2nd test log ===============
-> wget -V  == GNU Wget 1.11.4

3,1-> ping -c9  188.222.203.136  ==
--- 188.222.203.136 ping statistics ---
9 packets transmitted, 9 received, 0% packet loss, time 8012ms
rtt min/avg/max/mdev = 502.310/515.514/531.036/9.126 ms

3,2-> ping -c9 test.www.roaima.co.uk ==
ping: unknown host test.www.roaima.co.uk

4,1-> traceroute www.google.com  ==
traceroute: unknown host www.google.com

4,2->  lynx http://test.www.roaima.co.uk/ == ...
Unable to locate remote host test.www.roaima.co.uk.

----------> add: "188.222.203.136 test.www.roaima.co.uk" to /etc/hosts
3,1-> lynx http://test.www.roaima.co.uk/ ==
                             Test page - test.www.roaima.co.uk

   This is a test page to prove vHost connectivity to test.www.roaima.co.uk. 
If you had
   used an IP address instead of the name you would not have arrived here.

===> DN Service is failing ??
-> cat /etc/ppp/resolv.conf  ==
nameserver 41.160.0.36
nameserver 41.164.0.11
====> these are dynamically provided by this new/ISP2

3,1-> ping -c9 41.160.0.36 == 0% packet loss,
3,2-> ping -c9 41.164.0.11 == 0% packet loss,

==> see DNS:IP for old/proven/working installation
-> cat /mnt/p6/etc/ppp/resolv.conf ==
nameserver 168.210.2.2
nameserver 196.14.239.2

4,1-> ping -c9 196.14.239.2 == 0% packet loss,

==> Does new/unproven/IPS2's DNS KNOW: krugman.blogs.nytimes.com/
4,2 -> nslookup krugman.blogs.nytimes.com/ 41.164.0.11 ==
Server:		41.164.0.11
Address:	41.164.0.11#53
** server can't find krugman.blogs.nytimes.com/: NXDOMAIN

==> Does old/proven/IPS1's DNS KNOW: krugman.blogs.nytimes.com/
4,3 -> nslookup krugman.blogs.nytimes.com/  196.14.239.2 ==
Server:		196.14.239.2
Address:	196.14.239.2#53
** server can't find krugman.blogs.nytimes.com/: NXDOMAIN

==> BTW the way I *DO* get <krugman> on this new/suspected-unconfigured 
Slak13 is:
-> chroot /mnt/p6 lynx krugman.blogs.nytimes.com
==> where /mnt/p6 is the old/proven <Mandrake Installation>.

== TIA

 

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Thread

Only some IPs accessable? "NoHtmlMailsPlease" <UsePlainText@dog.edu> - 2011-10-07 22:42 +0200
  Re: Only some IPs accessable? Frank Boehm <fraboehm@gmx.de> - 2011-10-08 07:39 +0000
  Re: Only some IPs accessable? Chris Davies <chris-usenet@roaima.co.uk> - 2011-10-08 14:24 +0100
    Re: Only some IPs accessable? Ivan Shmakov <ivan@gray.siamics.net> - 2011-10-08 23:18 +0700
      Re: Only some IPs accessable? Chris Davies <chris-usenet@roaima.co.uk> - 2011-10-08 21:29 +0100
    Re: Only some IPs accessable? "NoHtmlMailsPlease" <UsePlainText@dog.edu> - 2011-10-12 15:09 +0200
      Re: Only some IPs accessable? Ralph Spitzner <rasp@spitzner.org> - 2011-10-12 17:24 +0200
        Re: Only some IPs accessable? Chris Davies <chris-usenet@roaima.co.uk> - 2011-10-13 10:55 +0100
      Re: Only some IPs accessable? Henrik Carlqvist <Henrik.Carlqvist@deadspam.com> - 2011-10-12 22:22 +0200
      Re: Only some IPs accessable? Chris Davies <chris-usenet@roaima.co.uk> - 2011-10-13 11:01 +0100
        Re: Only some IPs accessable? "NoHtmlMailsPlease" <UsePlainText@dog.edu> - 2011-10-14 23:00 +0200
          Re: Only some IPs accessable? Henrik Carlqvist <Henrik.Carlqvist@deadspam.com> - 2011-10-15 11:46 +0200
            Re: Only some IPs accessable? floyd@apaflo.com (Floyd L. Davidson) - 2011-10-15 04:59 -0800
              Re: Only some IPs accessable? Jorgen Grahn <grahn+nntp@snipabacken.se> - 2011-10-15 16:39 +0000
                Re: Only some IPs accessable? floyd@apaflo.com (Floyd L. Davidson) - 2011-10-15 08:50 -0800
                Re: Only some IPs accessable? Jorgen Grahn <grahn+nntp@snipabacken.se> - 2011-10-15 16:58 +0000
                Re: Only some IPs accessable? Richard Kettlewell <rjk@greenend.org.uk> - 2011-10-15 19:07 +0100
              Re: Only some IPs accessable? Henrik Carlqvist <Henrik.Carlqvist@deadspam.com> - 2011-10-15 19:50 +0200
                Re: Only some IPs accessable? floyd@apaflo.com (Floyd L. Davidson) - 2011-10-15 12:30 -0800
                Re: Only some IPs accessable? Ralph Spitzner <rasp@spitzner.org> - 2011-10-19 18:14 +0200

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