1CONFIG_IP_NF_FTP 2PPTP conntrack and NAT support 3CONFIG_IP_NF_PPTP 4 If you are running PPTP sessions over a stateful firewall or NAT box, 5 you may want to enable this feature. It enables conntrack and NAT for 6 PPTP sessions. 7 8 If you want to compile it as a module, say M here and read 9 Documentation/modules.txt. If unsure, say `N'. 10