RE: Network Config Problems

["Jeremy Rodriguez" <jrod cmsmechanical com>]

did you try "ifdown eth0" first?
what was "ifconfig -a" after that?
what was the routing table after that "netstat -rn"?


When you bring up the network interface try using a MTU of 1300, I have seen
where there is an issue with certain firewalls.
also try doing a traceroute:

"traceroute www.yahoo.com"

This should tell you where you are getting hung.


-----Original Message-----
From: redhat-install-list-admin redhat com
[mailto:redhat-install-list-admin redhat com]On Behalf Of Tom Ford
Sent: Wednesday, February 04, 2004 10:53 AM
To: redhat-install-list redhat com
Subject: RE: Network Config Problems


Sorry that should have been 'That seems NOT to work'!

-----Original Message-----
From: redhat-install-list-admin redhat com
[mailto:redhat-install-list-admin redhat com] On Behalf Of Tom Ford
Sent: 04 February 2004 15:37
To: redhat-install-list redhat com
Subject: RE: Network Config Problems

That seem to work, I tried pinging again, and it seems to detect the ip of
the destination.. i.e. if I ping ns1.iapbb.net

ping ns0.iapbb.net
PING ns0.iapbb.net (216.127.80.104) 56(84) bytes of data.


216.127.80.104 being the ip of the nameserver.. so its somehow getting out
to the www?

>>Try to configure all again:

ifconfig eth0 195.224.13.86 broadcast 195.224.13.255
netmask 255.255.255.0 up

and then, restart your eth0:
/etc/rc.d/init.d/network restart

-----Original Message-----
From: redhat-install-list-admin redhat com
[mailto:redhat-install-list-admin redhat com] On Behalf Of Manuel Aróstegui
Ramirez
Sent: 04 February 2004 14:42
To: redhat-install-list redhat com
Subject: RE: Network Config Problems

 --- Tom Ford <tom iapbb net> escribió: >
> > Are you able to ping the outside world?
> www.yahoo.com returns a ping.
>
> [root linux1 root]# ping www.yahoo.com
> PING www.yahoo.akadns.net (216.109.118.71) 56(84)
> bytes of data.
>
> No pings returned though;
>
> > What is your routing table look like?
>
> Kernel IP routing table
> Destination     Gateway         Genmask
> Flags   MSS Window  irtt
> Iface
> 195.224.13.0    0.0.0.0         255.255.255.0   U
>      0 0          0
> eth0
> 169.254.0.0     0.0.0.0         255.255.0.0     U
>      0 0          0
> eth0
> 127.0.0.0       0.0.0.0         255.0.0.0       U
>      0 0          0 lo
> 0.0.0.0         195.224.13.1    0.0.0.0         UG
>      0 0          0
> eth0
>
> > Maybe the default route is not there?
>
> eth0      Link encap:Ethernet  HWaddr
> 00:00:00:00:00:00
>           inet addr:195.224.13.86
> Bcast:195.224.13.255  Mask:255.255.255.0
>           UP BROADCAST RUNNING MULTICAST  MTU:1500
> Metric:1
>           RX packets:855 errors:0 dropped:0
> overruns:0 frame:0
>           TX packets:283 errors:0 dropped:0
> overruns:0 carrier:0
>           collisions:0 txqueuelen:100
>           RX bytes:65389 (63.8 Kb)  TX bytes:22384
> (21.8 Kb)
>           Interrupt:5 Base address:0xd800
>
> lo        Link encap:Local Loopback
>           inet addr:127.0.0.1  Mask:255.0.0.0
>           UP LOOPBACK RUNNING  MTU:16436  Metric:1
>           RX packets:19 errors:0 dropped:0
> overruns:0 frame:0
>           TX packets:19 errors:0 dropped:0
> overruns:0 carrier:0
>           collisions:0 txqueuelen:0
>           RX bytes:1452 (1.4 Kb)  TX bytes:1452 (1.4
> Kb)
>
> Hope this might shed some light,


Cheers

>
> -----Original Message-----
> From: redhat-install-list-admin redhat com
> [mailto:redhat-install-list-admin redhat com] On
> Behalf Of Jeremy Rodriguez
> Sent: 04 February 2004 14:14
> To: redhat-install-list redhat com
> Subject: RE: Network Config Problems
>
> I disagree with the ip_forwarding. You should only
> set this if you are
> routing.
> Are you able to ping the outside world?
> www.yahoo.com returns a ping.
> What is your routing table look like?
>  netstat -rn
> Maybe the default route is not there?
> also send the output of:
>  ifconfig -a
>
> -----Original Message-----
> From: redhat-install-list-admin redhat com
> [mailto:redhat-install-list-admin redhat com]On
> Behalf Of Chris Hewitt
> Sent: Wednesday, February 04, 2004 9:01 AM
> To: redhat-install-list redhat com
> Subject: Re: Network Config Problems
>
>
> Tom Ford wrote:
>
> > I'm having trouble getting a simple workstation
> box access the net.
> >
> > IP Addr: 195.224.13.86
> >
> > DNS Prm: 195.224.13.3
> >
> > DNS Scn: 195.224.13.140
> >
> > Gateway: 195.224.13.1
> >
> > This should be all okay, and upon pinging the
> machine from a windows
> > based machine I can get returns. I can SSH into
> the machine fine from
> > another pc on the same network.
> >
> > I cannot access the internet using mozillia on the
> machine, it says
> > connection is either refused or times out. I
> cannot SSH into the box
> > outside of the current local area network.
> >
> > I am I doing something wrong with regards to
> gateway? It seems to me
> > that the box is failing to find a route out to the
> good ol' www. I
> > have set this all up in the network config
> settings.
> >
> Have you set ip forwarding? This is needed to allow
> connections through
> the computer.
> echo 1>/proc/sys/net/ipv4/ip_forward
>
> HTH
> Chris
>
>
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=====
--

Manuel Aróstegui Linux user 200896

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