I want to fine tune our firewall, for that I need to allow IPSec VPN traffic in firewall. Can anyone tell me the exact IPSec Ports & Protocols? Our VPN device resides behind firewall and using IPSec over UDP.
We are using Cisco ASA 5500 series as a VPN server.
ISAKMP - UDP 500
ESP - Protocol 50
ISAKMP NAT-Traversal - UDP 4500 (NAT-T)
IPSEC Over UDP - UDP 10000 (Default)
IPSEC Over TCP - TCP 10000 (Default)
*Pls rate if it helps*