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</o:shapelayout></xml><![endif]--></head><body lang=EN-AU link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Ok a weird one…..or I don’t know what I’m doing ;}<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>network A – 192.168.1.0/24<o:p></o:p></p><p class=MsoNormal>Default Gateway on Network A is 192.168.1.254 – where firehol sits<o:p></o:p></p><p class=MsoNormal>Recently added a 10mb/10mb symmetrical link and its linked to Network A by a cisco router on 192.168.1.252. The link goes to Network B which is 10.0.0.0/16.<o:p></o:p></p><p class=MsoNormal>Network B has a default gateway which is the 10mb/10mb link.<o:p></o:p></p><p class=MsoNormal>The firewall has a route for 10.0.0.0/16 to go via 192.168.1.252<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>If a machine in Network A (192.168.1.5) tried to ping a machine in Network B (10.0.1.118) it works (and I’ve verified that it bounces through the firewall first (or the firewall tells it to send via 192.168.1.252).<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Now, if a pc in Network B (10.0.1.145) tries to ping 192.168.1.5 it doesn’t work and I see this in /var/log/messages….<o:p></o:p></p><p class=MsoNormal>Jun 25 11:54:47 gateway kernel: 'PASS-unknown:'IN=eth0 OUT=eth0 SRC=192.168.1.5 DST=10.0.1.145 LEN=84 TOS=0x00 PREC=0x00 TTL=63 ID=40547 PROTO=ICMP TYPE=0 CODE=0 ID=21016 SEQ=773<o:p></o:p></p><p class=MsoNormal>If the pc has a static route to send traffic for 10.0.0.0/16 via 192.168.1.252 the ping works when it originates from Network B.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>That tells me that the ping packet from 10.0.1.145 made it through to 192.168.1.5 but the return traffic never got “redirected” by the firewall.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Now, I know I should add permanent static routes, and I have done that for all pc’s (pushed out via group policy) in the 192.168.1.0/24 range, but I am trying to fathom out why it works if the ping originates from Network A, but it doesn’t work when the ping originates from Network B.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I have also tried (possible incorrect usage) the following and it hasn’t helped…..<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>PRIVATE="192.168.0.0/16 10.0.0.0/16"<o:p></o:p></p><p class=MsoNormal>masquerade ppp+ src “$PRIVATE" dst not "$PRIVATE"<o:p></o:p></p><p class=MsoNormal># above interface rules, but after masquerade rules<o:p></o:p></p><p class=MsoNormal>nat to-destination 192.168.1.252 inface eth0 dst "10.0.0.0/16"<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>and also tried a router rule like so….<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>router redirects inface eth0 outface eth0<o:p></o:p></p><p class=MsoNormal> route all accept<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Nothing has worked though. <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Can someone explain what I’m doing wrong and guide me as to whether the above can be made to work without adding static routes to all pc’s? <o:p></o:p></p><p class=MsoNormal>I cant add static routes to printers and Network B wants to print directly to Printers in Network A. At the moment I’m using a print server in Network A but I need to be able to give some reason why it won’t work directly.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Thanks in advance.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='font-size:10.0pt;color:black;mso-fareast-language:EN-AU'>Regards <br><br>Les </span><span style='mso-fareast-language:EN-AU'><o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>