Cannot connect to remote VPN connection behind Cisco 800 series router

[lreger]

I am having multiple users behind a cisco 860w router not able to connect to their different remote offices all using their personal laptop and Cisco VPN client software. Does anyone know what I need to configure on the router to allow this traffic to passthrough the device?

Thanks

[JORGE RODRIGUEZ]

You need to allow these for Cisco vpn client VPNing outbound.

ISAKMP - UDP 500

ESP - Protocol 50

UDP 4500 (NAT-T)

some more details in this thread

http://forum.cisco.com/eforum/servlet/NetProf?page=netprof&forum=Virtual%20Private%20Networks&topic=Network%20Management&topicID=.ee6b2ba&fromOutline=&CommCmd=MB%3Fcmd%3Ddisplay_location%26location%3D.2cc0a1db

Regards