将PF语法从OpenBSD 4.4转换为5.5：“rdr on”，“no nat on”，“nat on”

Question

如何将以下PF语法从OpenBSD 4.4转换为OpenBSD 5.5？

rdr on $IF_LAN proto tcp from $LAN to $IP_WAN port http -> $WEB_SERV
no nat on $IF_LAN proto tcp from $IF_LAN to $LAN
nat on $IF_LAN proto tcp from $LAN to $WEB_SERV port http -> $IP_LAN

Answer 1

使用传入rdr-to并传递给nat-to

pass in on $IF_LAN proto tcp from $LAN to $IP_WAN port http rdr-to $WEB_SERV
pass out on $IF_LAN proto tcp from $LAN to $WEB_SERV port http nat-to $IP_LAN

没有nat似乎是关于设计的问题