I’ve got a problem with the firewall configuration to connect to the VPN of an AVM FRITZ!Box at another location.
When I connect with firewall enabled (Custom Policy mode), a popup for the process “avmike.exe” appears, for which I allow all access. But then I receive an error “Timeout: could not reach the remote station”.
Then I defined the process “avmike.exe” as trusted application, but the error still occurs.
If I set the firewall to “disable”, the connection works.
I asked the vendor AVM for a description of the necessary settings. Here we go:
- Allow incoming/outgoing connections for UDP port 53 (DNS)
- Allow incoming/outgoing connections for UDP port 500 (ISAKMP)
- Allow incoming/outgoing connections for UDP port 4500 (NAT-Traversal)
- Allow incoming/outgoing ESP packets (“Encapsulated Security Payload”; IP protocol number 50)
NOTE: The passthrough of ESP packets is called “IPsec-Passthrough” in many NAT routers.
How to configure Comodo for these ESP packets?
And why does “trusted” not work? I would suppose that this allows everything.
Thanks in advance for your help!