GFI Forums: Kerio Control » vpn server not responding

There are quite a number of scenarios, in which you may encounter "site is not responding" issues. The scenarios that we have encountered and dealt with are detailed below. Scenario 1: Remote VPN fails with error: "Site is not responding" or "Gateway not responding" Product: IPSec VPN, Endpoint Security VPN Connecting L2TP/ IPSec VPN Server Behind a NAT, Error Code May 14, 2018 DNS Resolution via VPN Not Working on Windows 10 | Windows Jan 22, 2020

May 14, 2018

Mar 19, 2020 [Solved] The peer is not responding to phase 1 ISAKMP requests

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