user mode VpnClient, etc

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zxning
Posts: 2
Joined: Sat Feb 29, 2020 4:47 pm

user mode VpnClient, etc

Post by zxning » Sat Feb 29, 2020 5:18 pm

Hello Everyone,
New to here.
1. Is there a search function available in this forum?
2. Is there a "user mode" vpnclient ?
3. if I run user mode vpnbridge on PC A, other vpnclient B can connect to PC A from B, (following the tutorial "Exploit SecureNAT for Remote Access into Firewall without Any Permission"), but can I connect from A to B? if not, why not? the connection is built already. If I run netstat on A, I can see connection from B to A, however I cannot ping B from A.

Thanks for advance.
Shawn

zxning
Posts: 2
Joined: Sat Feb 29, 2020 4:47 pm

Re: user mode VpnClient, etc

Post by zxning » Tue Mar 03, 2020 2:02 pm

Bump

centeredki69
Posts: 257
Joined: Wed Sep 18, 2013 1:49 pm

Re: user mode VpnClient, etc

Post by centeredki69 » Thu Mar 05, 2020 1:06 am

The reason you cannot ping/access vpn-client B from PC-A is because PC-A is not part of the SecureNAT network. Even though it is hosting the SEbridge software running secureNAT. It is still only part of its local "physical" network (office/Home). SecureNat works like a Virtual router behind a physical router and creates its own network (192.168.30.0/24 is the default). Its virtual WAN port gets an Ip address from the office/home DHCP server, all though this is not visible in the SecureNAT settings . Its like being doubled NATed. Traffic flows out the SecureNat network into the physical network (office, home) and then to the Internet. Just like outside internet traffic is blocked by a physical NAT router firewall. SecureNat also blocks outside traffic. When vpn-client B connects it receives an ip address from the secureNAT DHCP server (192.168.30.10 and so on) via the Layer 2 cascade connection. So the connection is between vpn-client B and the SecureNAT Virtual router. Not between vpnclient B and PC A.

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