> For using ssh sessions from my linux box to a machine on the internet I use: > iptables -t mangle -A PREROUTING -i ppp0 -p tcp --sport ssh -j TOS --set-tos Minimize-Delay > iptables -t mangle -A OUTPUT -o ppp0 -p tcp --dport ssh -j TOS --set-tos Minimize-Delay but this itself will not priorize anything .. depends on routers outside > Now my question is if the opposite rules do make sense also? > iptables -t mangle -A PREROUTING -i ppp0 -p tcp --dport ssh -j TOS --set-tos Minimize-Delay > iptables -t mangle -A OUTPUT -o ppp0 -p tcp --sport ssh -j TOS --set-tos Minimize-Delay > My intention is to give priority to incoming (from internet to my linux > box) ssh sessions also. It is nonsence .. Once packet is in your box all QoS decisions was already made. devik