Forum Discussion
Anzine321
Altocumulus
Altocumulustunnel failed after antivirus avg from trial to full protection
Hi
i have issue that tunnel failed after avg antivirus from trial to full protection
here is log on f5 report user
CHostCtrl::Failed, Firing OnError event (message: Failed to initialize local Tunnel Server)
- Lucas_Thompson
Employee
On the Windows edge client, tunnelserver is the process that handles comms between winsock and the VPN network driver. It implements TLS/SSL, F5 FastPPP, PPP, LCP, iSession, and a few other things and serves as the primary "TCP to PPP proxy". This allows the F5 VPN driver to be much simpler (more secure) because it doesn't have to do much besides just talk PPP and FastPPP.
In a who-talk-to-whom diagram, it might look something like this:
Network -> Windows -> Winsock -> Tunnelserver -> F5 VPN NDIS Driver -> Windows Network
From a tech support perspective, tunnelserver does a lot of stuff. It has OpenSSL in it and does a lot of network stuff so it is sometimes terminated or prevented from operation by antimalware / antivirus software, or firewall software. You can typically add processes and executable files to an "allow list" in AV software, so make sure you've done that.
This is an example of the kind of thing that happens with interop against some AV software vendors:
https://my.f5.com/manage/s/article/K10893
Anzine321Hi
Thanks for information
processes and executable files to an "allow list" in AV software is TunnelServer.exe ?
i will explore Av antivirus setting how to add allow list
based on your article that workaround is remove the TunnelServer.exe file from the antivirus quarantine or remove the F5 Networks Dynamic Application Tunnel Control client component
