Hi Guys, Hola..Good day!
I would like to ask for an advice about my firewall/nat/pf box. * network layout: isp1---->|firewall|-->switch|----> servers isp2---->|nat/pf | |----> clients * pf.conf - http://www.openbsd.com/faq/pf/pools.html ; as my reference i just copy this config file and change the macro: lan_net = "192.168.0.0/24" int_if = "dc0" ext_if1 = "fxp0" ext_if2 = "fxp1" ext_gw1 = "68.146.224.1" ext_gw2 = "142.59.76.1" # nat outgoing connections on each internet interface nat on $ext_if1 from $lan_net to any -> ($ext_if1) nat on $ext_if2 from $lan_net to any -> ($ext_if2) # default deny block in from any to any block out from any to any # pass all outgoing packets on internal interface pass out on $int_if from any to $lan_net # pass in quick any packets destined for the gateway itself pass in quick on $int_if from $lan_net to $int_if # load balance outgoing tcp traffic from internal network. pass in on $int_if route-to \ { ($ext_if1 $ext_gw1), ($ext_if2 $ext_gw2) } round-robin \ proto tcp from $lan_net to any flags S/SA modulate state # load balance outgoing udp and icmp traffic from internal network pass in on $int_if route-to \ { ($ext_if1 $ext_gw1), ($ext_if2 $ext_gw2) } round-robin \ proto { udp, icmp } from $lan_net to any keep state # general "pass out" rules for external interfaces pass out on $ext_if1 proto tcp from any to any flags S/SA modulate state pass out on $ext_if1 proto { udp, icmp } from any to any keep state pass out on $ext_if2 proto tcp from any to any flags S/SA modulate state pass out on $ext_if2 proto { udp, icmp } from any to any keep state # route packets from any IPs on $ext_if1 to $ext_gw1 and the same for # $ext_if2 and $ext_gw2 pass out on $ext_if1 route-to ($ext_if2 $ext_gw2) from $ext_if2 to any pass out on $ext_if2 route-to ($ext_if1 $ext_gw1) from $ext_if1 to any - it works fine * Q & A 1. i try to add nat-anchor "ftp-proxy/*" rdr-anchor "ftp-proxy/*" rdr on $int_if proto tcp from any to any port 21 -> 127.0.0.1 \ port 8021 anchor "ftp-proxy/*" but when i try to download through an ftp server it say: 425 Security: Bad IP connecting. How can I resolve this? 2. if there is an vpn ipsec and the its only configure to route on $ext_if1, what do i need to add on my pf.conf? set skip on { lo $int_if enc0 } pass quick on $int_if1 proto esp from any to any keep state pass quick on $ext_if1 proto esp from any to any keep state pass quick on $ext_if1 proto (tcp udp) from any to any port 500 keep state pass quick on $ext_if1 proto (tcp udp) from any to any port 4500 keep state Any advice? Thanks! cheers, kintaro Oe ____________________________________________________________________________________ Get easy, one-click access to your favorites. Make Yahoo! your homepage. http://www.yahoo.com/r/hs
