I use L2TP connection to connect to internet at my dorm. And i have a PPTP VPN to browse some website(VPN in VPN), before installed the firewall, everything works fine.
But after the firewall is installed, problem occured.
i can connect the two VPN ,but i cant browse any website. If i modify my routing table,add some entries about some website, to let me reach these webs without going through the SECOND VPN, then i can browse these webs properly. But those webs need to be reached through SENCOND VPN, it failed. And the result of Tracert shows that i can reached thouse webs’s IP through THE SECOND VPN. I just cant browse them with any browser.
Edit by EricJH: changed punctuation for a more comfortable read.