Home » Kerio User Forums » Kerio Control » Kerio VPN port change (I need to change VPN client communication port (4090))

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we are using Kerio Control VPN server\client for remote communication with internal infrastructure from client company premises. Unfortunately due to client infrastructure regulative default port 4090 port can't be used.
I've checked the documentation, Kerio Control Administrator's Guide, Configuring Kerio VPN server (page 59) says : "The port 4090 (both TCP and UDP protocols are used) is set as default.
Do not switch to another port without a proper reason.
There is another older post but the provided solution doesnt work."Yes, that can be done. On the VPN server TAB- Advanced you can change the portnumber. On the client you must give the following at server : [DNS name or IP]:[portnumber]"
I've tested it with multiple ports.

Any ideas or I have missed something?

Your help is appreciated!

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Hi Tihce,

You can change the server port of Kerio VPN in the Kerio Control web interface using the following navigation:

Configuration > Interfaces > IPsec and Kerio VPN Interfaces > VPN Server > Kerio VPN

Here in the Kerio VPN tab you can change the field labelled "Listen on port:" to your desired port.

You must also update the port in the service definition of Kerio VPN to reflect this port change:

Configuration > Definitions > Services > Kerio VPN > Edit...

If you have previously manually specified port 4090 in a traffic rule you must also change this in:

Configuration > Traffic Rules > Service/Port

All the best,


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