Hi all and thank you in advance for you help.

I installed a minimal slackware: group "a" plus nmap, joe, groff, man, quota, iptables, openssh, tcpip, whois, findutils.

I have not put any rules in iptables chains.

I configured my network card with netconfig (or with "ifconfig eth0 10.0.0.60 netmask 255.255.255.0 up") and with real values:
ip 10.0.0.60
netmask 255.255.255.0
gateway 10.0.0.200

I can do nmap to my windows machine (10.0.0.53) and other computers on the network, but:
1. I cannot do ping from .53 to .60
2. I cannot do ping from .60 to other computers on my network (with windows .53 I can do it)
3. I cannot do ssh from win .53 to linux .60

The .53 seems to be down from other machines in the network but i can do nmap fron linux to the network.

Any suggestions?
Do I have to install some other packages?
Do I ghave to configure some modules?

Thank you again

I've restored the basic installation previously the hardening process ad it has no problem. So the problem is in the hardening process.
When I'll discover what it the problem I will post it here for other users.

In the meanwhile if you have some suggestion please post it.

Than you again