vpn ssl and Mac OS High Sierra

Question

Hi to all, 
 I've setup a vpn ssl config on XG 105 v 17.0.1 MR 1. 
 Connecting with Tunnelblick 3.7.4b 
 From El Capitan and High Sierra. 
 Both machines connect ok (authentication, vpn connected, ping to lan working) 
 On El capitan I can browse to internal machines web interfaces (Synology, switch, printer) and RDP to Windows server. 
 On High sierra only RDP is working. All web connections fail. In the Sophos log viewer (firewall part) I can see the connection accepted, then right after another connection denied on rule 0 reason : Could not associate packet to any connection. 
 Any idea ? 
 Thks a lot

peterstebri · Accepted Answer

Hi, 
 
 There is a workaround, i have the same problem with http/https connection to switches from my mac os high sierra. In tunnelblick change the Open ssl version (see picture) and all works without problem, all http https connections ar working.

Mark Stubblefield · Answer

Just wanted to document on this page that there's an undocumented viscosity feature to fix this. Go to your connection properties, under advanced, and put 
 
 #viscosity protocol-version 2.3 
 
 in the "Extra OpenVPN connection strings" box. It'll disappear after you hit OK, but the VPN will start working after this.