Hi all, In my n/w iam using iptables firewall in my gateway and now the problem is iam able to use that machine as a default gateway for all the windows machines in my network but i cannot even ping the gateway/firewall from linux machine. the strange thing is if i ping a client linux machine from the firewall it pings and from then onwards i can ping/use the gateway to browse the net even from a linux machine. every time if i want to use that g/w from a linux machine i had to ping the client machine from the firewall to enable it. iam using iptables 1.2.5/Redhat Linux 7.3 can any body help me out to resolve this strange problem Manikandan P. -- # get Subject header, but remove initial "Subject: " portion sed '/^Subject: */!d; s///;q'