There was a thread on this list about how to do multiple nat'tings less than a year ago.
Run your natd's on separate ports. Get ipfw to do lots of logging. (don't make the mistake of having natd log: all instances try to open the same log file path) ----- Original Message ----- From: "Kristian Rask" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Thursday, November 13, 2003 3:05 AM Subject: multiple VLAN's public IP's and NATd's : HowTo ? Hi all How would one go about running several instances of natd with unique public IP's for several VLAN's terminated on the same interface ? The idea being that multiple seperate RFC-1918 networks are terminated as VLANS in the FreeBSD machine and that each VLAN goes through a seperate NAT'd instance in order to NAT on a particular public IP. 1. House full of businesses.. (here shown w. 5/8) 2. Each buisiness has it's own LAN 3. Each LAN goes into a switch where the port is configured as a particular LAN 4. The switch is connected to a FreeBSD machine w. a set of VLAN's matching those in the seperate businesses 5. There should be 1 instance of NATd running for each VLAN 6. Each NATd uses seperate public IP's 7. WAN Staticly configured using a /30 8. /29 net for 5/8 seperate NATd's (a.b.c.0/29) routed to the wan. 9. possibly "ifconfig SomePhysIf0 a.b.c.1/29" I think for 5 IP's it would be something like: for i in 2 3 4 5 6; do natd -port 100${i} \ -f /etc/natd_${i}.conf \ -n <phys-if or vlan ?> \ -a a.b.c.${i} done for i in 2 3 4 5 6; do ipfw add divert 100${i} all .... (from VLAN-if | VLAN-CIDR | ... ?) to any ...(in via VLAN-if | out via WAN-if | .... ?) done i *assume* i need to configure the /29 somewhere .. i *suspect* that i can do something "weird" and actually use all 8 IP's ... perhaps configure the 8 IP's as aliases on lo ? we will have more than a few addresses in order to be able to deliver routeable addresses if anyone so requests.. like.. a /26 of wich we use a /28 for permanent IP's and can deliver 6 /29 for the few who actually needs a routable network. anyone has any experiences or hints / pointers ? TIA and regards Kristian aka The eternal newbie _______________________________________________ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "[EMAIL PROTECTED]"
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