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AP-51xx Access Point Product Reference Guide 6-46
4. Click Ok to return to the VPN screen. Click Apply to retain the settings made on the Auto
Key Settings screen.
5. Click Cancel to return to the VPN screen without retaining the changes made to this screen.
6.11.3 Configuring IKE Key Settings
The Internet Key Exchange (IKE) is an IPsec standard protocol used to ensure security for VPN
negotiation and remote host or network access. IKE provides an automatic means of negotiation and
ESP Type ESP provides packet encryption, optional data authentication and
anti-replay services for the VPN tunnel. Use the drop-down menu
to select the ESP type.
• None - Disables ESP. The rest of the fields are not active.
• ESP - Enables ESP for this tunnel.
• ESP with Authentication - Enables ESP with authentication.
ESP Encryption
Algorithm Use this menu to select the encryption and authentication
algorithms for this VPN tunnel.
• DES - Selects the DES algorithm.No keys are required to be
manually provided.
• 3DES - Selects the 3DES algorithm. No keys are required to
be manually provided.
• AES 128-bit: - Selects the Advanced Encryption Standard
algorithm with 128-bit. No keys are required to be manually
provided.
• AES 192-bit: - Selects the Advanced Encryption Standard
algorithm with 192-bit. No keys are required to be manually
provided.
• AES 256-bit: - Selects the Advanced Encryption Standard
algorithm with 256-bit. No keys are required to be manually
provided.
ESP Authentication
Algorithm Use this menu to select the authentication algorithm to be used
with ESP. This menu is only active when ESP with Authentication
was selected for the ESP type.
• MD5 - Enables the Message Digest 5 algorithm requiring
128-bit. No keys are required to be manually provided.
• SHA1 - Enables Secure Hash Algorithm. No keys are
required to be manually provided.