I will appreciate your technical expertise on this issue that we encounter. The customer has a Sonicwall pro 2040 enhance o/s ver 188.8.131.52e. Our office has a Fotigate 100A. We manage to link up the Site to site VPN between the 2 firewalls. Sonicwall all local lan subnets are able to reach our private LAN network behind the Fortigate without any problem. From our private network (Fortigate) we can reach the LAN interface and the same subnet of the Sonicwall without any authentication processes.
However we are not able to reach the subnet other that the lan interface subnet of the Sonicwall. The authentication process are needed before we are allow to reach the other subnets located at 20 remote locations island wide (all having different subnets). The authentication only allow 2 hrs where a re login is require again. Being a site to Site VPN connection we cannot afford this. The authentications are for the company policy for internal user to authenticate before there are allow to access the remote location and the Internet. This has affected the site to site VPN as well. We cannot find any settings to bypass this restriction or exempt out filter. Need your advise on this.
10.100.x.x (directly connecting with sonicwall Firewall)
10.101.x.x (connected with remote location) (there is routing from Firewall to Router vice visa)
When I access from my private Lan network behind the Fortigate to 10.101.x.x (Sonicwall), below picture (policy login redirect) will appear.
When I access to 10.100.x.x, there is no problem.