The security level for the zone defines the level of trust given to that zone. The security appliance supports five security levels for the zones as described below. The greater value, the higher the permission level. The predefined VPN and SSLVPN zones have the same security level.
• Trusted(100): Offers the highest level of trust. The LAN zone is always trusted.
• VPN(75): Offers a higher level of trust than a public zone, but a lower level of trust than a trusted zone, which is used exclusively by the predefined VPN and SSLVPN zones. All traffic to and from a VPN zone is encrypted.
• Public(50): Offers a higher level of trust than a guest zone, but a lower level of trust than a VPN zone. The DMZ zone is a public zone.
• Guest(25): Offers a higher level of trust than an untrusted zone, but a lower level of trust than a public zone. Guest zones can only be used for guest access.
• Untrusted(0): Offers the lowest level of trust. It is used by both the WAN and the virtual multicast zones. You can map the WAN port to an untrusted zone.