Symantec 360R Administration Guide - Page 186

186 Field descriptions Firewall field descriptions Advanced tab field descriptions You configure advanced firewall settings, such as IPsec pass-thru, on the Advanced tab. Table C-24 Advanced tab field descriptions Section Field Description Optional Security Enable IDENT Settings Port Disabling the IDENT port makes port 113 closed, not stealth (not open). You should enable this setting only if there are problems accessing a server. The IDENT port normally contains the host name or company name information. By default, the security gateway sets all ports to stealth mode. This makes a computer to appear invisible outside of the network. Some servers, such as some email or MIRC servers, view the IDENT port of the system accessing them. Disable NAT Mode Disabling NAT mode disables the firewall security functions. Only use this setting for intranet security gateway deployments where, for example, the security gateway is used as a bridge on a protected network. When the security gateway is configured for NAT mode, it behaves as an 802.1D bridge device. Block ICMP Requests Blocks ICMP requests, such as PING and traceroute, to the WAN ports.