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Use Synergy accross VPN without Split-Tunneling


Kwak

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Hello,

I want to use Synergy to connect my Win10 PC in my LAN with my work laptop Win10 in WAN (Cisco AnyConnect without split-tunneling, so i cannot access my lan)

I try so manny things... HTTP Tunnels, SSH and so on... I'm out of ideas. What do you think about that ? Thanks you in advance.

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Daniel Alarcon

Hello @Kwak, unfortunately, you have covered the possible options to make Synergy work when one of the computers is connected to a VPN. The last viable option is a hardware solution, a secondary network adapter (USB) between both computers, in case you have the needed requirements, you can try this.

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USB network adapters seems to be a good solution for me. I will test. I'm afraid that VPN will take over all the trafic, even USB adapters... what do you think ?

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Daniel Alarcon

@Kwak That will depend on the VPN client, sometimes it may "block" all other network traffic, and sometimes it will just disable on it's own network adapter.

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The VPN client is Cisco Anyconnect. I've tried VPN on Wifi adapter and LAN with the ethernet card and VPN steal all the trafic unfortunately...

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Daniel Alarcon

@Kwak  Sad to hear that it's a common practice that Cisco AnyConnect is configured to block any other network traffic while connected to the VPN. Unfortunately, this can't be overruled.

 

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alansterger

I have been able to use Synergy (without SSL) to cut-paste between Win 10 and Ubuntu with Ubuntu connected via client VPN.  I was doing this in Win 7, but a recent upgrade to Win 10 broke it.  Discovered Win 10 has 3 Windows Defender Firewalls/Profiles (Domain, Private, Public) versus Win 7's 2 Firewalls/Profiles (Public, Private).  

Disabling the 3rd Domain Firewall (Windows Defender Firewall with Advanced Security -> Windows Defender Firewall Properties) did the trick for me.

-- Asterger

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Thanks for helping @alansterger. Actually my laptop Win10 is managed by my company. Windows firewalls are disabled, i have McAfee firewall witch i had disabled without results :/

 

Cisco Anyconnect VPN client is in Split-Exclude mode : all network trafic go through VPN. The metric in route table is 2 and nothing can be done here.

 

Unfortunately it's over i think. What should be great is a TCP over HTTP option in Synergy, maybe it should work

Edited by Kwak
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