ZyXEL ZyWALL USG 50 User Manual - Page 383
Configuration > VPN > IPSec VPN > VPN Connection > Edit continued
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Chapter 23 IPSec VPN Table 113 Configuration > VPN > IPSec VPN > VPN Connection > Edit (continued) LABEL DESCRIPTION Manual Key Select this option to configure a VPN connection policy that uses a manual key instead of IKE key management. This may be useful if you have problems with IKE key management. See Section 23.2.2 on page 387 for how to configure the manual key fields. Policy Local Policy Remote Policy Policy Enforcement Note: Only use manual key as a temporary solution, because it is not as secure as a regular IPSec SA. Select the address corresponding to the local network. Use Create new Object if you need to configure a new one. Select the address corresponding to the remote network. Use Create new Object if you need to configure a new one. Clear this to allow traffic with source and destination IP addresses that do not match the local and remote policy to use the VPN tunnel. Leave this cleared for free access between the local and remote networks. Selecting this restricts who can use the VPN tunnel. The ZyWALL drops traffic with source and destination IP addresses that do not match the local and remote policy. Phase 2 Settings SA Life Time Type the maximum number of seconds the IPSec SA can last. Shorter life times provide better security. The ZyWALL automatically negotiates a new IPSec SA before the current one expires, if there are users who are accessing remote resources. Active Protocol Select which protocol you want to use in the IPSec SA. Choices are: AH (RFC 2402) - provides integrity, authentication, sequence integrity (replay resistance), and non-repudiation but not encryption. If you select AH, you must select an Authentication algorithm. ESP (RFC 2406) - provides encryption and the same services offered by AH, but its authentication is weaker. If you select ESP, you must select an Encryption algorithm and Authentication algorithm. Both AH and ESP increase processing requirements and latency (delay). Encapsulation The ZyWALL and remote IPSec router must use the same active protocol. Select which type of encapsulation the IPSec SA uses. Choices are Tunnel - this mode encrypts the IP header information and the data. Transport - this mode only encrypts the data. Proposal Add Edit The ZyWALL and remote IPSec router must use the same encapsulation. Click this to create a new entry. Select an entry and click this to be able to modify it. ZyWALL USG 50 User's Guide 383