Can't ping / Can't ssh in local network

[Guest Earthworm Jim]

So I'm giving Mandriva a go, and I've run into a weird snag -

 

I've got two machines - the one I'm typing on now & another one right next to it which can't talk to each other.

 

I can ping anything outside of my local network (ie - www.yahoo.com) from either machine. I can come here & post this question from etiher one. But they don't see each other

 

pings & ssh's both hang (ssh is in connect, strace doesnt't want to attach to ping for some reason):

ssh:

Process 14993 attached - interrupt to quit

connect(3, {sa_family=AF_INET, sin_port=htons(22), sin_addr=inet_addr("192.168.15.104")}, 16

 

I've got my security settings cranked down to "Poor" on both sides, verified "disabled = no" in xinetd.d/ssh.conf on both sides, verified that net.ipv4.icmp_echo_ingore* were all set to 0 in /etc/sysctl.conf, and obviously I'm here posting from one of the affected machines. When I had Fedora / windows systems on this same router they could see each other just fine. But now that I'm all Mandriva, nobody can see anybody on the local network

 

What gives?

[Guest Earthworm Jim]

And just for fun, this is me logged in from the other machine.

 

They can both see the whole of the internet, but they can't see each other...

[ianw1974]

First, check what ports the machines are listening on:

 

netstat -tunlp

 

and look for port 22 for SSH. If it is there, then it will be a firewall problem with shorewall/iptables being used on these machines. You can easily test this once the port 22 has been verified for listening and accepting connections, and just doing:

 

service shorewall stop
service iptables stop

 

and then try to connect to SSH and ping.

[Guest Earthworm Jim]

First, check what ports the machines are listening on:

 

netstat -tunlp

 

and look for port 22 for SSH. If it is there, then it will be a firewall problem with shorewall/iptables being used on these machines. You can easily test this once the port 22 has been verified for listening and accepting connections, and just doing:

 

service shorewall stop
service iptables stop

 

and then try to connect to SSH and ping.

 

nifty, thanks.

[scarecrow]

Can you do some

cat /etc/hosts

as well as

cat /etc/hosts.allow

cat /etc/hosts.deny

and finally

cat /etc/ssh/sshd_config

in both machines?

Edited May 3, 2008 by scarecrow