Sorry, I thought I gave enough info, they come in on eth1 and leave on eth1. IE machine that pf.conf was given for is doing nat and some small routing. Machine1(pf.conf given for this one) Eth0=internetip Eth1=10.0.0.1 network 10.0.0.0/24 Eth1=10.0.0.2 network 10.0.0.0/24
Machine2 Eth0=internetip Eth1=10.0.0.2 network 10.0.0.0/24 Eth1=10.0.4.1 network 10.0.4.0/24 If I am reading this right translation takes precendence over filtering, which means If I have the following after translation, then the packets will still pass, or do they get blocked after translation on the outbound if.x block in log all block out log all As for the keep state rules, what I was trying to accomplish is passing packets between eth1 & eth2 checking state on each interface. Maybe one 2 revised rules would be pass in on $eth1 inet proto udp from $lan1 to $lan2 keep state pass in on $eth2 inet proto udp from $lan1 to $lan2 keep state Do I need a corresponding one backtracking such as? pass in on $eth2 inet proto udp from $lan2 to $lan1 keep state pass in on $eth1 inet proto udp from $lan2 to $lan1 keep state Amir Seyavash Mesry [EMAIL PROTECTED] LSI Logic Corporation http://www.lsilogic.com/ Raid Support Test Technician 6145-D Northbelt Parkway Norcross, GA 30071 678-728-1211 NOTICE: This communication may contain privileged or other confidential information. If you are not the intended recipient, or believe that you have received this communication in error, please do not print, copy, retransmit, disseminate, or otherwise use the information. Also, please indicate to the sender that you have received this communication in error, and delete the copy you received. Thank you. -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of j knight Sent: Monday, June 02, 2003 2:42 PM To: pf Subject: Re: Ruleset Problem Amir Seyavash Mesry wrote: > I am having a odd problem and I am hoping someone one the list can > point out my error, Here is my pf.conf, the keepstate on the icmp > doesn't seem to be working, it won't pass the packets out. Ie > I am on host 10.0.0.51, I ping 10.0.4.1(routing table entry is present for > this net) and it won't ping it, but if I ping 10.0.0.1(fxp1) then it will > allow the packet and let it return. I think it is something really simple > that I am overlooking but I can't figure it out. Any help is appreciated. Which interface do packets have to exit to reach 10.0.4.1? > #allow outgoing traffic from Internet nic to internet if initiated > from Internet Nic. > pass out on $eth0 inet proto tcp from $eth0 to any modulate state > pass out on $eth0 inet proto udp from $eth0 to any keep state > pass out on $eth0 inet proto icmp from $eth0 to any icmp-type 8 code 0 keep > state Translation happens before filtering so you will find that these rules are passing packets from $lan1, $lan2 as well. > #allow nat for both lan segments only if lan segments initiate request. > pass out on $eth0 inet proto tcp from $lan1 to any modulate > state > pass out on $eth0 inet proto udp from $lan1 to any keep state > pass out on $eth0 inet proto icmp from $lan1 to any icmp-type 8 code 0 > keep state > pass out on $eth0 inet proto tcp from $lan2 to any modulate > state > pass out on $eth0 inet proto udp from $lan2 to any keep state > pass out on $eth0 inet proto icmp from $lan2 to any icmp-type 8 code 0 > keep state These rules will have no affect because of what I mentioned above. > #allow requests from segment 1 to segment 2 or internet only if > segment 1 requests it. > pass in on $eth1 inet proto tcp from $lan1 to any modulate > state > pass in on $eth1 inet proto udp from $lan1 to any keep state > pass in on $eth1 inet proto icmp from { $lan1, $loc } to any icmp-type 8 > code 0 keep state > > #allow requests from segment 2 to segment 1 or internet only if > segment 2 requests it. > pass in on $eth2 inet proto tcp from $lan2 to any modulate > state > pass in on $eth2 inet proto udp from $lan2 to any keep state > pass in on $eth2 inet proto icmp from { $lan1, $loc } to any icmp-type 8 > code 0 keep state Where are your "pass out on { $eth1, $eth2 }" rules? "Keep state" only tracks state on one interface; you still have to pass the traffic through any other interface the packets will pass through. .joel
