I had similar problems when I set up my firewall - first I had one with two nic's, now one with three. I had the iptables definitions set up just fine, but the routing was acting up.
It turns out that the default ifup and ifup-aliases scripts make some assumptions about how you want the routing done. I had to comment out some of the default routing in these and add an etc0.route file with default (static) route definitions in /etc/sysconfig/networking/devices when I set up using RedHat 8.0. With RedHat 7.2, I commented the ifup and ifup-aliases file and put the static route into staticroutes file (?) under /etc/sysconfig/network-scripts directory. -----Original Message----- From: John Horne [mailto:[EMAIL PROTECTED]] Sent: Tuesday, February 04, 2003 3:31 PM To: [EMAIL PROTECTED] Subject: Pinging local multihomed server interfaces Hello, I have setup two local multihomed servers with redhat 8.0. Each has 2 NIC's in them ,and each nic has its own IP address. The addresses are 'real' - i.e. they are not non-routing private addresses. The servers are also configured, using iproute2, to load balance the traffic out of each interface. The simple round-robin of the DNS will provide the inbound traffic being (sort of) shared out to each nic :-) No problems generally with this. But if I try and ping from the server one of its nics, specifying to use the same interface (NIC) then the ping works. If I tell it to ping the other nic then it fails - generally it just times out. If I use the IP addresses then it all works. So, for one server we have: eth0=141.163.163.248 eth2=141.163.163.249 So 'ping -I eth0 141.163.163.248' and 'ping -I eth2 141.163.163.249' works. But 'ping -I eth0 141.163.163.249' and 'ping -I eth2 141.163.163.248' fails. Doing the same, but using the IP addresses 'ping -I 141.163.163.248 141.163.163.249' and 'ping -I 141.163.163.249 141.163.163.248' works. Anyone know why if I use the interface name it fails, but if I use the IP addresses it works? Ifconfig of the interfaces shows the correct IP addresses. Thanks, John. -- ------------------------------------------------------------------------ John Horne, University of Plymouth, UK Tel: +44 (0)1752 233914 E-mail: [EMAIL PROTECTED] PGP key available from public key servers -- redhat-list mailing list unsubscribe mailto:[EMAIL PROTECTED]?subject=unsubscribe https://listman.redhat.com/mailman/listinfo/redhat-list -- redhat-list mailing list unsubscribe mailto:[EMAIL PROTECTED]?subject=unsubscribe https://listman.redhat.com/mailman/listinfo/redhat-list