Linux 7.3 Not able to connect

[Sunil Sharma_1]

Hi,
I am facing a strange problem, i installed Red hat Linux 7.3 on 2 Compaq Prolient server, these server are able to talk each other but no other node (Windows/Sun) able to connect or reach to these nodes(nither ping nor telnet).

It's very urgent ..
please help...
Sunil

[Claudio Cilloni]

the other windows/sun nodes are on the same subnet? if no, the gateway is set correctly on the linux machines?

[Massimo Bianchi]

Hi Sunil,
first thing to check:

- ip configuration/gateway configuration
- firewall configuration
- on switch/router: vlan configuration

Massimo

[Sunil Sharma_1]

Hi,
No Firewall
all are in same subnet

Sunil

[Vitaly Karasik_1]

- which driver do you use? if you have Broadcom gigabit chip, try to dw from HP site and install bcm5700 driver instead of tg3


- could you please send us output of ifconfig?

Vitaly

[Stuart Browne]

Routing tables from all boxes, 'ifconfig -a' from linux and sun boxes, and an 'ipconfig' from the windows boxes so we can see what's going on.

I'd also like to see the output of these two commands on the linux boxen:

iptables -nvL
ipcahisn -nvL

Atleast one of these should fail with errors.

Are you sure it isn't affected by tcp wrappers, and thus require correct entries in the /etc/hosts.{allow,deny} files, so the contents of them as well if you could.

You've also verified that they are all on the same PHYISCAL segment of the network?

Now, what service are you trying to connect to? Are you sure this service is running on the linux boxes?

[Steven E. Protter]

You need a test

As root, both boxes

service iptables stop

Test connectivity.

If it suddenly comes on, you are in the right ballpark, if not move on to other causes.

Same goes if ipchains if you are using that firewall.

sEP

[Sunil Sharma_1]

Thanks to all of you.
My problem got resolved.

Sunil