IPsec is a suite of protocols for securing network connections, but the details and many variations quickly become overwhelming. This is particularly the case when trying to interoperate between disparate systems, causing more than one engineer to just mindlessly turn the knobs when attempting to bring up a new connection.

If you have given your trusted employees and key contractors remote access to your network via a client virtual private network (VPN), congratulations! By now, you have seen the productivity and cost benefits from allowing collaboration that surmounts geographical separation.

Please find enclosed the cisco site to site VPN configuration in a nutshell. These basic commands would help in configuring a site to site VPN setup. This can also assist in troubleshooting vpn issues.