[NTLUG:Discuss] can't ping to 2 NIC box

[MadHat]

m m wrote:
> 
> Hi all:
> I have a linux box (say, SA) with 2 NICs, use RH 6.2 os.
> etho w/ public IP (64.100.100.100) connect to the network switch.
> eth1 w/ non-routeable IP (192.168.0.1) connect to ahother pc (say, SB) w/ IP
> (192.168.0.2).
> I have is it physical connected, problems are:
> ping from SA to SB, the error message is: destination Host Unreachable
> ping from SB to SA, it hang on there.
> 
> /etc/hosts on SA has all the hosts information.
> 
> any suggestions?

routes? (run 'netstat -rn' and let us see).
is IP forwarding turned on (enabled in the kernel)?  
Are you using this like a firewall/router?
What distro, or have you rebuilt the kernel?

-- 
MadHat at unspecific.com
                                   "The 3 great virtues of a programmer:
                                      Laziness, Impatience, and Hubris."
                                                 --Larry Wall