Re: Help a sshd newbie! (Here is the results from that script)

[Ken Keefe <kjkeefe@siu.edu>]

It has got to be something in Mandrake's additional security setup. They
have several levels that you can set in the security console from Poor
to Paranoid. When I set the settings to "High", I can ssh and ping, when
I set it to "Higher" I can do neither. I need to find out what changes
between those two settings and I can't find anything on Mandrake's site.
Ken


On Fri, 2004-05-14 at 17:11, Stephen D. Reindl wrote:
> If you cannot ping the loopback which it would appear that you can't.
> The problem lies in the TCP/IP stack. Check that the tcp/ip stack is
> installed. I defer to others here to help with checking that.
> 
> Hope it helps
> 
> Steve
> 
> On Fri, 2004-05-14 at 14:59, Robert Citek wrote:
> > On Friday, May 14, 2004, at 13:02 US/Central, kjkeefe@siu.edu wrote:
> > > + ifconfig
> > > eth0      Link encap:Ethernet  HWaddr 00:30:1B:AE:1F:85
> > >           inet addr:192.168.1.29  Bcast:192.168.1.255  
> > > Mask:255.255.255.0
> > >           inet6 addr: fe80::230:1bff:feae:1f85/64 Scope:Link
> > >           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
> > >           RX packets:21089 errors:0 dropped:0 overruns:0 frame:0
> > >           TX packets:15282 errors:0 dropped:0 overruns:0 carrier:0
> > >           collisions:0 txqueuelen:1000
> > >           RX bytes:15236277 (14.5 Mb)  TX bytes:1848920 (1.7 Mb)
> > >           Interrupt:18 Base address:0xc000
> > >
> > > lo        Link encap:Local Loopback
> > >           inet addr:127.0.0.1  Mask:255.0.0.0
> > >           inet6 addr: ::1/128 Scope:Host
> > >           UP LOOPBACK RUNNING  MTU:16436  Metric:1
> > >           RX packets:245 errors:0 dropped:0 overruns:0 frame:0
> > >           TX packets:245 errors:0 dropped:0 overruns:0 carrier:0
> > >           collisions:0 txqueuelen:0
> > >           RX bytes:20011 (19.5 Kb)  TX bytes:20011 (19.5 Kb)
> > >
> > > + ping -c 1 127.0.0.1
> > > PING 127.0.0.1 (127.0.0.1) 56(84) bytes of data.
> > >
> > > --- 127.0.0.1 ping statistics ---
> > > 1 packets transmitted, 0 received, 100% packet loss, time 0ms
> > >
> > > + ping -c 1 192.168.1.29
> > > PING 192.168.1.29 (192.168.1.29) 56(84) bytes of data.
> > >
> > > --- 192.168.1.29 ping statistics ---
> > > 1 packets transmitted, 0 received, 100% packet loss, time 0ms
> > 
> > Even with your firewall off (all the rules said ACCEPT), you cannot 
> > ping either eth0 or the loopback.  You're getting 100% packet loss.  As 
> > far as I can tell this doesn't seem to be a problem with either your 
> > firewall nor your sshd daemon, but something else.
> > 
> > I can't think of anything else right now.  As a start, I'd do the 
> > following:
> >   - disable the firewall
> >   - boot into single user mode
> >   - enable networking and nothing else
> >   - try to ping the interfaces (lo and eth0)
> > 
> > Regards,
> > - Robert
> > 
> > 
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> > 
> 
> 
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