I have 1 WRT54G v4.0 and 1 WRT54G v2.0. I would like to create a VPN between them. I read that it is possible with third party firmware. But the information I found is not clear or complete. I tried to install Alchemy on the v2.1 and ended up with a brick. After un-bricking it it's running HyperWRT. I also read that you should set wait_time or something like that, but I can't find how to do that anywhere. I didn't either find clear information on which firmware supports which hardware versions. So the question would be what firmware are adequate to do this, which versions, and if it is stable and secure enough to run on a company. I'd also like to hear from your experience with this.