Overheard: Word of the Day

Mar 10 2009   1:20PM GMT

Overheard – When won’t IKE work?

Margaret Rouse Margaret Rouse Profile: Margaret Rouse

IKE negotiation sends and receives messages using UDP, listening on port 500. This can be a problem if you have a firewall in front of your VPN router or are trying to establish an IPsec client connection through a firewall.

Michael J. Martin, IPsec VPN router configuration: The ISAKMP policy

I wish I had read this earlier — Michael says “Remember that IKE is a protocol that supports ISAKMP — ISAKMP makes the rules, and IKE plays the game.”

If you’re thinking about implementing a VPN, be sure to read Lisa Phifer’s excellent breakdown on IPSec VPN clients.  Our newest sister site also has some good resources — SearchEnterpriseWAN.com.

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