I have upgraded SG560 to 4.07 from 3.x on both end point SG 560's. After the FW upgrade VPN would not work. I got around the problem by adding TCP port 1723 to the packet filtering allow rule. VP connection is now succesfull but I am not able to ping or remote desktop to any of the PC's on the VPN connected private LAN. Same problem with the IPsec tunnel. The tunnel is established succesfully but I can not ping or remote desktop to any of the private IP's? This all worked flawlessly prior to the 4.07 upgrade.
I have tried the different Firewall settings from high, medium to low to no avail.
any assistance will be greatly appreciated.
Are you replying on DNS, or simply IP addresses to perform the ping test ?