traffic-shaping?

Is there a tool recommended for traffic-shaping? Is tc still the actual
tool to do it? I also found tcng, but it looks rather complex and maybe
more than I need.

What I actually want to do is two things:

i) whatever happens with the connection : leave some bandwith for ssh
from outside and give ssh top-priority
ii) neither incoming or outgoing smtp or http-traffic should be allowed
to block the connection

The server where the shaping should happen is a small server acting as
NAT-router for ~30 clients and connected to internet via a 5000k down,
1000k up- DSL-connection

I've found a script called wondershaper at
http://www.tldp.org/HOWTO/ADSL-Bandw...mentation.html
but it uses a lot of iptable-commands that might interfere with my
existing firewall.

So maybe there is a simple solution that prevents me from needing to dig
deep into the traffic-shaping-topic. And if it is necessary to dig in
(I'm sure its intersting) where and with which tool do I start?


thnx,
peter