Does anybody here have it's WRT54G(S) acting as a VPN server, and what performance can I expect?

I read an article in the German and Dutch magazine C't. They mentioned the 125MHz or even 200MHz versions can not act as a VPN server over 54Mbps and is slow on lower speeds.

Well, I'm using my wrt (v 1.1) as a vpn-gateway for my LAN.
It provides me the maximum of speed (2Mbit Down/ 256kbit up) I can get with my current ISP.
The pings are also quite normal (without vpn ~15-20 ms, with a maximum of 25-30ms).

Depending on what you define as "VPN server", check out this forum post:

http://openwrt.org/forum/viewtopic.php?t=191

Which issue is that, this month's? (i.e. September)

That is exactly what I was looking for. No wonder I didn't find it: I was searching for 'vpn' posts.

Germany:c't nr 9/2004, page 198
Netherlands: c't 07-08/2004, page 88

If you can't find it, the WRT54G article is also on several p2p networks as pdf file.

If you want the article, send me a pm ..

I don't read German too well :-)

I'll pick up a copy in a few weeks when I get back in .nl.

Thanks anyways.

I only have G models, not GS models, but I recently did some pretty heavy testing of openvpn using 128bit AES between them, and got decent results.  I posted them on the IRC chennel, but don't have them here in front of me.

I need to flash another 1/2 dozen routers this week, and when I have a few up and running, I'll come back here and post the results. 

I seem to recall that, when using a 100mb/s ethernet link and openvpn on my laptop to openvpn on the WRT54G, I was getting about 4.5 mb/s over a single thread, one direction.  Changing it to bidirectional gave me about 2.5 mb/s each direction.
when I used 4 threads simultaneously, bidirectional, the throughput was less than 480kb/s per thread.  For me, these results are acceptable.

John Gorkos