I am having difficulty in transmitting data across a "connected" VPN tunnel. I believe certain ports may be blocked by an ISP (i.e port 500). I need info on what ports a VPN uses, and if Cisco makes a router that has port selectability for VPN applications? Can I select or try a different port thats available? Thanks
Thanks for the quick response. I am currently using two Linksys VPN routers. They "connect" but traffic doesn't flow - I cant ping either side within the tunnel. I dont have this problem with any other VPN's. I believe the ISP is blocking port 500 on the other side of my tunnel. What can I do to check this thoroughly and is there a Cisco router that may use a different port? Thanks!!
I have a customer with a significant deployment of VPN. Our LAN to LAN VPN is based on router to router connection. But our client software based VPN terminates in a 3060 concentrator. When our software client VPN users have difficulty connecting with UDP 500 (which sometimes is blocked by providers) they have an option to connect using a TCP port. (It is a configuration option within the client, and works with our concentrators). I am not sure that terminating the client session on a router has the same capability but terminating on a 3000 concentrator it works well for us.
Thanks. I believe the ISP is blocking UDP 500. Instead of using the Linksys routers I have now, what routers would you use if you needed to choose a different port? Is there a general setup you could give me that would work and allow port selection for VPN ? Thanks!!
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We have configured the outside and inside Interface with official ipv6 adresses, set a default route on outside Interface to our router, we also have definied a rule , which also gets hits, to permit tcp from inside Interface to any6.
In Syslog I also se...