To config VPN cisco
You should connect to the internet all site should be connecter to the internet
Then go to your browser and:
0.make one to one nat by puting your public ip address and reverse it to private ip address.
1.type the default gateway ip address it should be like 192.168.1.1 other wise check backword of your device and then type it
2.you should create a secure tannel be tapping tannel tab
Rename it as the tennal you want and fill the gaps
3.creat user management
In user management tap click it and creat all user you want to access them to your server later by filling gaps what ever user name and password
4.download quick VPN software or Any VPN software
When you download one of these two softwares install the software and then taps illustrate user and password then type your public ip address, username and password that you creat it in the user management and it all done.