[rhn-users] Strange Tcpip problem
Jon Branch
jon_branch at email.com
Fri Feb 20 01:12:06 UTC 2004
Hi Larry
I had something similar, but not identical happen some months ago when I was setting up a new server for a school network. In that instance the problem was related to the firewall settings on the Linux server. So, if you haven't done so already in your own troubleshooting, can I suggest that you try disabling the firewall on the Linux server and see if that affects the problem.
Regards
Jon Branch
----- Original Message -----
From: Larry Cotton <laurence.cotton at ntlworld.com>
Date: Thu, 19 Feb 2004 19:50:54 +0000
To: rhn-users at redhat.com
Subject: [rhn-users] Strange Tcpip problem
> Hi
>
> Can anyone suggest any web sites / tools etc. that might help me to
> troubleshoot go to this (see below) odd tcpip problem ?
>
> Cheers
> Larry
>
> Previous mails :
> -----------------------------------------------------------------------------------------------------------------------------------------
> Sorry, I forgot to mention my set up.
>
> The windows client has a single ethernet card with a static IP address,
> connected to the LAN.
>
> The linux server machine is has two ethernet cards, one of which has a
> static ip addres and is connected to the LAN, the other of which is
> connected to an ntl modem and uses dhcp (ntls dhcp server, not mine) to
> obtain the IP address. It looks like the dhcp IP address is obtained
> correctly - I,m using the linux machine as a gateway and both machines can
> connect to the internet (even after reboot when tcpip seems a bit ify).
>
> ipconfig /all on the windows client gives:
> Windows 2000 IP Configuration
>
> Host Name . . . . . . . . . . . . : larrys-machine
> Primary DNS Suffix . . . . . . . :
> Node Type . . . . . . . . . . . . : Broadcast
> IP Routing Enabled. . . . . . . . : No
> WINS Proxy Enabled. . . . . . . . : No
>
> Ethernet adapter Local Area Connection 2:
>
> Connection-specific DNS Suffix . :
> Description . . . . . . . . . . . : Realtek RTL8139(A) PCI Fast
> Ethernet
> Adapter
> Physical Address. . . . . . . . . : 00-E0-4C-49-02-B2
> DHCP Enabled. . . . . . . . . . . : No
> IP Address. . . . . . . . . . . . : 192.168.0.3
> Subnet Mask . . . . . . . . . . . : 255.255.255.0
> Default Gateway . . . . . . . . . : 192.168.0.2
> DNS Servers . . . . . . . . . . . : 194.168.8.100
> 194.168.4.100
>
> ifconfig -a on the linux server machine gives:
> eth0 Link encap:Ethernet HWaddr 00:01:02:12:17:7F
> inet addr:192.168.0.2 Bcast:192.168.0.255 Mask:255.255.255.0
> UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
> RX packets:54922 errors:0 dropped:0 overruns:0 frame:0
> TX packets:49226 errors:0 dropped:0 overruns:0 carrier:0
> collisions:1137 txqueuelen:100
> RX bytes:6390916 (6.0 Mb) TX bytes:23417576 (22.3 Mb)
> Interrupt:10 Base address:0xe400
>
> eth1 Link encap:Ethernet HWaddr 00:E0:4C:49:02:B2
> inet addr:80.1.204.132 Bcast:255.255.255.255 Mask:255.255.255.0
> UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
> RX packets:8004385 errors:0 dropped:0 overruns:0 frame:0
> TX packets:54939 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:100
> RX bytes:514955468 (491.0 Mb) TX bytes:7046649 (6.7 Mb)
> Interrupt:11 Base address:0xa000
>
> 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:56105 errors:0 dropped:0 overruns:0 frame:0
> TX packets:56105 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:0
> RX bytes:10348269 (9.8 Mb) TX bytes:10348269 (9.8 Mb)
>
> I'm fairly new to networking, so here's a couple of other snippets of
> information which may or may not be relevant:
> 1) Previously I was connected to the internet from only my windows machine,
> and had registered with ntl dsl services using that machine. Ntl links its
> registration to the Mac address, so on changing nics I had to use ifconfig
> to set the Mac address to the one registered.
>
> 2) The clock on my server is currently wrong, and way out of synch with the
> one on the client machine.
>
> Cheers
> Larry
>
> At 10:09 12/02/2004 -0600, you wrote:
> >Are you using DHCP? Does it get an IP and all the information
> >correctly?
> >
> >ipconfig /all should show your settings.
> >
> >Dan
> >
> >On Thu, 2004-02-12 at 10:17, Larry Cotton wrote:
> > > Hi
> > >
> > > I'm trying to set up a small network. I am using samba (running on redhat
> > > 8) with windows workgroups as the file server and am now trying to set up a
> > > windows 2000 client to share files
> > >
> > > When I set up the client everything seems to work fine - I can see my
> > > server machine in Network Places and connection to my shared directory is
> > > successful and accessible from My Computer (mapped to J: drive).
> > >
> > > However when I reboot my client machine and re-logon something odd happens
> > > with my tcpip connection. I can still see and access my shared directory as
> > > J: drive under My Computer, but when I try to view my server from Network
> > > Places it comes up with an error saying it cant connect.
> > >
> > > In this state I can ping my server machine fine, but when I ping 127.0.0.1
> > > I get "Request Timed Out" messages.
> > >
> > > It seems the only way to get get round these problems is to uninstall
> > > tcpip, reboot and re-install tcpip.
> > >
> > > Anyone have any idea what may be happening here ? or know somewhere where
> > > I might be able to track the problem down ?
> > >
> > > Cheers
> > > Larry
> -----------------------------------------------------------------------------------------------------------------------------------------
>
>
>
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