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ProSecure Unified Threat Management (UTM) Appliance Reference Manual
7-36 Virtual Private Networking Using IPsec Connections
v1.0, January 2010
Traffic Selection
Local IP From the pull-down menu, select the address or addresses that are part of
the VPN tunnel on the UTM:
• Any. All PCs and devices on the network.
Note: You cannot select Any for both the UTM and the remote endpoint.
• Single. A single IP address on the network. Enter the IP address in the
Start IP Address field.
• Range. A range of IP addresses on the network. Enter the starting IP
address in the Start IP Address field and the ending IP address in the End
IP Address field.
• Subnet. A subnet on the network. Enter the starting IP address in the Start
IP Address field and the subnet mask in the Subnet Mask field.
Remote IP From the pull-down menu, select the address or addresses that are part of
the VPN tunnel on the remote endpoint. The menu choices are the same as
for the Local IP pull-down menu (see above).
Manual Policy Parameters
Note: These fields apply only when you select Manual Policy as the policy type. When you specify the
settings for the fields in this section, a security association (SA) is created.
SPI-Incoming The Security Parameters Index (SPI) for the inbound policy. Enter a
hexadecimal value between 3 and 8 characters (for example: 0x1234).
Encryption Algorithm From the pull-down menu, select one of the following five algorithms to
negotiate the security association (SA):
• DES. Data Encryption Standard (DES)
• 3DES. Triple DES. This is the default algorithm.
• AES-128. Advanced Encryption Standard (AES) with a 128-bits key size.
• AES-192. AES with a 192-bits key size.
• AES-256. AES with a 256-bits key size.
Key-In The encryption key for he inbound policy. The length of the key depends on
the selected encryption algorithm:
• DES: enter 8 characters.
• 3DES: enter 24 characters.
• AES-128: enter 16 characters.
• AES-192: enter 24 characters.
• AES-256: enter 32 characters.
Key-Out The encryption key for he outbound policy. The length of the key depends on
the selected encryption algorithm. The required key lengths are the same as
for the Key-In (se above).
SPI-Outgoing The Security Parameters Index (SPI) for the outbound policy. Enter a
hexadecimal value between 3 and 8 characters (for example: 0x1234).
Table 7-12. Add VPN Policy Settings (continued)
Item Description (or Subfield and Description)