[NTLUG:Discuss] Cannot ping from anywhere but the console

cb cbartenfeld at home.com
Sat Jun 9 13:46:19 CDT 2001


Chris Cox wrote:
> 
> Here's some more info on the problem... the IP addresses have been changed
> to protect....
> 
> Am I missing something obvious here??
> To describe... the 10.166.8.152 and it's netmask are required to go
> through DSL.  The 10.166.8.158 is the gateway which resides on the
> DSL provider's end.  The 10.166.8.152 is the beginning of the netblock
> for the local server (provided again by the DSL provider).
> 
> The local host IP is 10.166.8.156
> 
> Given the route table below... the local server can ping itself, and
> addresses on the internet FROM THE CONSOLE.  If someone logs into the
> local server via a telnet session (even as root)... ping just hangs...
> it is NOT a DNS lookup issue (that is, you can't even ping IPs, ping -n
> will hang too).  Nslookup seems to work too!  I did notice that doing
> an ipchains -L took an incredibly long time to work.
> 
> System is running SuSE 7.1 (with a kernel I did not build).
> 
> Just FYI, disabling eth1 doesn't help.
> 
> Any thoughts,
> Chris
---could you have a problem with /etc/ipchains.conf ??? I had the same
-sounding- problem and found that i had missing information in that
file...the file may be in a different place in SuSE 7.1.

cb

 
> root at router:/
> Kernel IP routing table
> Destination     Gateway         Genmask         Flags Metric Ref    Use If
> 10.166.8.152    0.0.0.0         255.255.255.248 U     0      0        0 eth0
> 169.254.0.0     0.0.0.0         255.255.0.0     U     0      0        0 eth1
> 127.0.0.0       0.0.0.0         255.0.0.0       U     0      0        0 lo
> 0.0.0.0         10.166.8.158    0.0.0.0         UG    0      0        0 eth0
> 
> 
> Jack Snodgrass wrote:
> >
> > did you do
> > ping -n
> > to turn off reverse lookups. I've seen ping do weird stuff when it
> > couldn't do a reverse name lookup. Just a guess.
> >
> > jack
> >
> > ----- Original Message -----
> > From: "Chris Cox" <cjcox at acm.org>
> > To: <discuss at ntlug.org>
> > Sent: Friday, June 08, 2001 10:58 AM
> > Subject: [NTLUG:Discuss] Cannot ping from anywhere but the console
> >
> > > I was helping someone out with their setup and he had
> > > me telnet into his box.  But even as root, I could
> > > not ping anything on his network... it would just
> > > hang until timeout.... yet he could ping everything
> > > from the console.
> > >
> > > Does anyone know what causes this?

> > > Thanks,
> > > Chris
> > > _______________________________________________
> > > http://www.ntlug.org/mailman/listinfo/discuss
> > >
> >
> > _______________________________________________
> > http://www.ntlug.org/mailman/listinfo/discuss
> _______________________________________________
> http://www.ntlug.org/mailman/listinfo/discuss



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