If the scan shows that port 500 is open, the VPN is IPSec. Port 500 is the standard port for the (IKE) protocol used for the key exchange required in IPSec. If the scan shows port 443 to be open, the standard port for SSL, then the VPN is obviously SSL. An SSL VPN …
SonicWall IKE VPN negotiations, UDP Ports and NAT-Traversal SonicWall IKE VPN negotiations, UDP Ports and NAT-Traversal explanation. 12/20/2019 1201 34087. DESCRIPTION: SonicWall IKE VPN negotiations, UDP Ports and NAT-Traversal explanation. RESOLUTION: Traffic on UDP port 500 is used for the start of all IKE negotiations between VPN peers. Learning How To Pen Test VPNs with VulnVPN Dec 04, 2013
As for the port scan, check to see if you have any malware, trojans, worms etc.. w/e make sure you do not have routing services running as well as ICS. Also elaborate on the port scan, was this scan done on an internal ip address 10.x.x.x by a 192.168.1.x ?
Jun 24, 2013
IPsec VPN Penetration Testing with BackTrack Tools - Open
TCP Port Scanner. As the name indicates – it is capable of scanning only TCP ports. TCP Port … How to scan the internal network using the VPN Agent You can now perform internal network scanning without performing any special configuration, you just have to run the VPN Agent and start scanning. The VPN Agent is a very small virtual machine (VmWare format) which has to be active in your internal network while the scans are running.