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How to configure site-to-site VPN tunnel using ASA?

Site-to-Site secure VPN tunnel using the ASA (Adaptive Security Appliances) enables an encrypted connection between private networks over a public network such as the internet.

Basic steps for VPN Configuration:

1- First define the ISAKMP Policy.

For example:

• Authentication

• Hash

• Encryption

• Group

2- Establish IPsec transform set.

For example:

· Esp-des

• Esp-md5-hmac
• Esp-aes
• Asp-sha-hmac

3- Configure crypto access list.

For example: Define interesting traffics

4- Configure crypto map

Used to verify the previously defined parameters

5- Now apply crypto map on the outside interface.

Used to verify the outgoing interface traffic

This post was written by: Joshua Daniel

Joshua Daniel is a Management Professional,professional blogger, web designer and front end web developer. Follow him on Twitter