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Why does UDP 500 need to be forwarded?

Hi,

We're a small shop running a Sonicwall SOHO3 using the latest firmware. One license for the global VPN client is installed.

At home I have a Linksys WRT54G, also running the latest firmware. In the linksys I have to forward UDP port 500 to the IP of the portable. If I don'tn the connection won't work. I don't even get a prompt for username/password.

Why is this? I can imagine someone wanting to VPN in from say a hotel somewhere. It would be unlikely the hotel would forward UDP port 500 to someone's laptop during his/her stay. And even if they wanted to do this, what if another person wants to VPN to somewhere else? You can't forward port 500 twice, now can you?

someone here who can enlighten me?

thanks,

David

Reply to
David
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Solved, it's a Linksys issue.

I tried the connection from another location, where I'm behind 2 firewalls that don't have UDP 500 forwarded, and it worked perfectly.

Reply to
David

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