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Archer36 03-11-2008 11:58 AM
Slackware network connectivity issues?
 
Hey all I got kind of a weird question. I am setting up a linux image that contains the bare minimum stuff to run rdesktop. These boxes are going to be used at the private school I work at, to connect to a Win 2k3 TS server. I have a slim version of slack 12 installed, but for some reason neither this slack 12 box, or my slack 11 laptop can not talk to the outside world.

Both properly acquire a DHCP address which is supplied by another windows 2k3 box, and both have correct routes the gateway (cisco 1720), and valid DNS (also win 2k3). Setting a static IP also does not help. Here is why its weird, I can ping all internal IP address just fine, and I can try to ping google.com. Doing so results in "From 192.168.50.1 icmp_seq=1 Destination Net Unreachable" but it IS able to resolve google.com to its IP. I tried this with my personal server outside of the network and the same thing.

Anyone have a clue what might be going on here? My router is a Cisco 1720, it is controlled by the school district. However if I ask they might let me poke around inside of it.

Thanks,
Archer

H_TeXMeX_H 03-11-2008 01:23 PM
That is strange indeed. Maybe they have some type of firewall setup to block access to the outside except for a few computers. Or do computers running Window$ work just fine if you do the same thing ?

Archer36 03-11-2008 01:39 PM
Our MS boxes all work just fine. I will add that randomly my laptop internet started working but then died a short while later. Also we don't have any firewalling onside, just the Cisco 1720 and a few switches and hubs. All the firewalling is done at the school districts place.

If I had to guess its something weird within our 1720. I can't say I really know much about IOS though :(

But I guess its not a huge deal as these boxes are going to be only contacting internal IP's to use Terminal Services. But it would be nice to have basic browsing support if for some reason the TS server went down.

H_TeXMeX_H 03-11-2008 02:08 PM
That's even more strange, that it would work for a bit and then stop. Well, maybe try posting the output of 'ifconfig' on these computers.

Archer36 03-11-2008 03:49 PM
This is from the DHCP machine. Everything appears normal to me.

Code:
eth0      Link encap:Ethernet  HWaddr 00:D0:B7:AB:9B:5F
          inet addr:192.168.50.136  Bcast:192.168.50.255  Mask:255.255.255.0
          inet6 addr: fe80::2d0:b7ff:feab:9b5f/64 Scope:Link
          UP BROADCAST NOTRAILERS RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:588363 errors:0 dropped:0 overruns:0 frame:0
          TX packets:328767 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:423142822 (403.5 MiB)  TX bytes:25023731 (23.8 MiB)
          Interrupt:9
Code:
Kernel IP routing table
Destination    Gateway        Genmask        Flags Metric Ref    Use Iface
192.168.50.0    *              255.255.255.0  U    0      0        0 eth0
loopback        *              255.0.0.0      U    0      0        0 lo
default        192.168.50.1    0.0.0.0        UG    0      0        0 eth0
Code:
# Generated by dhcpcd for interface eth0
search xxxxxxxxxxxx.org
nameserver 192.168.50.5
nameserver 192.168.50.7

H_TeXMeX_H 03-12-2008 12:28 PM
Yup, everything looks just fine. It should be working.

Have you tried any other distros, so we can see if this is something about Slackware or Linux in general. Just a live CD like Knoppix or DSL or something should work.

Archer36 03-12-2008 01:01 PM
No I have not, but that thought has occurred to me as well, I will try a live CD when I am there tomorrow.

Thanks


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