I have a domain, lets call it test.com thats pointing to IP, this is my home external ip.

On this IP I have an webserver (Wildfly) and an VPN client (AirVPN). My IP on the VPN client is 300.0.0.10.

Wildfly is behaving as I want, It answers to the calls of

If I look for my external IP in Google it is 300.0.0.10, how I expect it to be, everything fine until now.

1. My other programs do use the VPN but, will this affect the webserver?

2. As far as I understand, this is like having 2 external IP adresses, except that goes through my ISP and allows port forwarding while 300.0.0.10 still goes through my ISP but does not allow port forwarding (nor am I interested in it since vpns would be useless lol), is this correct?

3. Is there any chance for the trafic on 300.0.0.10 to know that even exists? I mean, while using the VPN to browse the web can it be possible for lets say Chrome to find a relationship between 300.0.0.10 and

4. Would using VPN and WebServer at the same time affect web ranking / indexing?

closed as off-topic by yoonix, Iain, Zoredache, Tim, Jim B Feb 23 '17 at 0:55

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  • "Questions on Server Fault must be about managing information technology systems in a business environment. Home and end-user computing questions may be asked on Super User, and questions about development, testing and development tools may be asked on Stack Overflow." – yoonix, Zoredache, Tim, Jim B
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  • That 300 IP octet is rather unique... Your problem is unclear, do you have a problem or are you asking for general advice? – Tim Feb 22 '17 at 21:22
  • @Tim hahah, just didnt want to use any kind of real ips, asking for thing I do not understand... – Alpha2k Feb 22 '17 at 21:30
  • Web server and VPN server on the same machine are fine, so long as they run on different ports, which would be standard. You have one external IP address. What exactly are you trying to achieve? A VPN into your home computer? – Tim Feb 22 '17 at 21:39

When it comes to VPN the answer is that you have to setup routing properly. In your case you may need policy and or source based routing to control which interface (vpn or physical) is used for outgoing packets.

Setups like this can get very complex, and often requires a really good understanding of routing.

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