Hi, Could I please have some pointers to tracing a masquerade problem in 2.4.16. The 2.4.26 box connects to the ISP with a 33k Modem and recieves at approx 3.4kB/s. The computer is also on a 10MB lan which tranfers at almost 1MB/s. However, when the 2.4.16 box masquerades for either win98, or linux boxes on the lan, the recieved speed drops to 1-2kB/s and seems to regularly drop packets. iptable setup (fromMasquerading-Simple-HOWTO.gz): echo -n "Starting IP masquerading" echo "1" > /proc/sys/net/ipv4/ip_forward modprobe iptable_nat iptables -F; iptables -t nat -F; iptables -t mangle -F iptables -t nat -A POSTROUTING -o ppp0 -j MASQUERADE iptables -A INPUT -m state --state ESTABLISHED, RELATED -j ACCEPT iptables -A INPUT -m state --state NEW -i ! ppp0 -j ACCEPT iptables -P INPUT DROP iptables -A FORWARD -i ppp0 -o ppp0 -j REJECT (I have also tried the simple: iptables -t nat -A POSTROUTING -o ppp0 -j MASQUERADE by itself, no difference). Regards, Mark. http://movies.yahoo.com.au - Yahoo! Movies - Vote for your nominees in our online Oscars pool. - : send the line "unsubscribe linux-net" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html