UDP Port 500 (IPSEC)

[grahamwharton]

Do Vodafone block incoming UDP packets on port 500 from hitting our broadband routers?

[Anonymous]

As far as I am aware Vodafone Broadband UK don't block any ports.  However, if you have some kind of server on a port you will need to port-forward from the router to the server otherwise the data packets in question will just be binned by the router.

Maybe more info on what you are trying.

[grahamwharton]

I have a IPSEC VPN running on my router. Packets on UDP/500 seem to disapear into a black hole. If I disable the VPN service and port forward UDP/500 to my PC with wireshark I see nothing on 500. The client is definitiely sending packets to my routers IP address.

[Anonymous]

I guess the question is: what router, and I have to assume you have WinPcap or similar installed.

Actually mimicking your set-up with a VLAN server on the router here and accessing it over the mobile network showed no issues, so it's more likely something in the configuration!

*I'm assuming you are FTTC or FTTP - Vodafone's mobile broadband solution could easily be more problematic!

[grahamwharton]

Its a Vigor 2862 router on FTTC