IPsec VPN Settings for Cisco 870

crypto isakmp policy 1
encr 3des
authentication pre-share
group 2
crypto isakmp key thisismysharedsecret address [[UntangleExternalWanIP]]
crypto isakmp keepalive 10 periodic
crypto isakmp nat keepalive 10
!
!
crypto ipsec transform-set MyTransFormSetName esp-3des esp-sha-hmac
!
crypto ipsec profile MyIPSECProfileName
set transform-set MyTransFormSetName
!
!
crypto map MyCRMapName 1 ipsec-isakmp
description Tunnel To Untangle
set peer [[UntangleExternalWanIP]]
set security-association lifetime seconds 28800
set transform-set MyTransFormSetName
match address 118
!
interface FastEthernet4
description MyCiscoWANIP
ip address [[CiscoExternalWANIP]] [[Subnet]]
ip nat outside
ip virtual-reassembly
duplex auto
speed auto
crypto map MyCRMapName
!
interface Vlan1
description CiscoLAN
ip address [[CiscoLAN]] [[subnet]]
ip nat inside
ip virtual-reassembly
ip tcp adjust-mss 1452
!
access-list 118 permit ip [[CiscoLAN]] [[subnet]] [[UntangleLAN]] [[subnet]]