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I had installed SSTP VPN server (windows server 2012) and then tryied to check whether my traffic is encrypted or not. I had used wireshark and got strange result: packets to all servers, but my RADIUS are encrypted, but to RADIUS they are not encrypted. I had checked my route table. Results are here: Route print

I suppose that traffic to my RADIUS ( is going through route, but i can't understand why. Any suggestions?

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up vote 0 down vote accepted

If I was to wildly speculate, then I would guess that also happens to be the IP address of your VPN server. The link between this system and the VPN server can't transit the VPN, so a static route gets added when the VPN starts, and the default gateway is adjusted to point at the VPN.

This is why most people strongly suggest making a VPN server be the only service provided by a computer/device.

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It seems to be the reason, i have RADIUS and VPN in one server. Thanks! – ko4evneg Sep 12 '13 at 13:48

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