How do i set this up? Is it a manual change in a file?
> it's said ipfilter can not do this kind of work. that's wrong.
> here is an example. let's say A.B.C.D1 is the LAN address and E.F.G.H
> is WAN address and A.B.C.D2 is the address of the internal web server
> which is published to the outside world.
> rdr WAN 0/32 port 80 -> A.B.C.D2 port 80 tcp
> rdr LAN E.F.G.H/32 port 80 -> A.B.C.D2 port 80 tcp
> map LAN from A.B.C.D/24 to A.B.C.D2/32 port = 80 -> E.F.G.H/32
> portmap tcp auto
> now http://E.F.G.H is accessible to the LAN users.
> quite simple, isn't it. but 2 problems arise.
> first, performance. m0n0 might be overloaded, because those packets
> need to be rewritten twice.
> second, WAN ip address. WAN ip address must be hard coded into the
> last two rules. when the WAN ip address is statically allocated, it's
> not a problem. however, for those who using dhcp/pptp/pppoe, their WAN
> ip address will change. that change must be tracked and ipnat rules
> must be modified upon that change. thus a script should be put into
> the mini-crontab to monitor the change, or somebody knows a better
> sorry for my poor english