Dude - your ISP is being an arsehole... [EMAIL PROTECTED] SMTP error from remote mailer after MAIL FROM:<[EMAIL PROTECTED]>: host kcmx01.mgw.rr.com [24.94.163.190]: 550 5.7.1 Mail Refused - 202.0.42 - See http://security.rr.com/mail_blocks.htm#security - 20030323
----------------------------------------------------------------------- -------- On Thu, 04 Sep 2003 05:34:42 -0500 "Praveen Kallakuri" <[EMAIL PROTECTED]> wrote: So you got this: INTERNETINTERNETINTERNETINTERNETINTERNET | | 192.168.1.1 192.168.0.1 | | 192.168.1/24 192.168.0/24 And you added this: \ / 192.168.1.125-laptop-192.168.0.125 > eth0: (subnet 1) 192.168.1.125 > eth1: (subnet 2) 192.168.0.125 > test client in subnet 1 > route 192.168.0.x requests to 192.168.1.125 > test client in subnet 2 > route 192.168.1.x requests to 192.168.0.125 Thats sounds okay to me - at first glance I thought you'd forgotten to tell the other workstations about the new gateway. > having done this, we were still not able to communicate between the > test clients. both test clients can ping their respective interfaces > on the laptop and even the interface in the other subnet. but they > cannot communicate with each other. what are we doing wrong or what > more do we have to do? I think that your new gateway needs to know that its allowed to forward packets between those interfaces. Try these commands to see if it all starts working: /sbin/iptables --flush empties the old rulesets /sbin/iptables -P FORWARD ACCEPT allows packets to be forwarded /sbin/iptables -P OUTPUT ACCEPT allows packets to leave the system /sbin/iptables -P INPUT ACCEPT allows packets into the system Each machine will have to learn about the new gateway somehow - either you configure each, or you tell the two gateways about the new route/internal gateway available. At last resort you could nat between these two interfaces with a command like this... #Route between eth0 and eth1 /sbin/iptables -t nat -A POSTROUTING -s 192.168.0.0/24 -o eth0 -j SNAT --to 192.168.0.125 /sbin/iptables -t nat -A POSTROUTING -s 192.168.1.0/24 -o eth1 -j SNAT --to 192.168.1.125