Hi, This is kind of specific. I have a need to rate limit my packets at the transmitting source and mark all the packets (by marking, I mean setting the ToS byte field(DSCP for the diffserv guys) in the IP header to some specific value) above a certain rate. I know that with ipchains/iptables, you can do a lot of neat things at the source end. Would this too be one of them? If yes, how? Tony, thanks for the HOWTO on ipchains. That was really helpful. --Hari - : send the line "unsubscribe linux-net" in the body of a message to majordomo@vger.rutgers.edu