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# vi /etc/rc.conf ================+==============+================= defaultrouter="221.33.88.254" ifconfig_fxp0="inet 192.168.0.1 netmask 255.255.255.0" ifconfig_rl0="inet 221.33.88.2 netmask 255.255.255.0" ifconfig_rl1="inet 202.0.57.1 netmask 255.255.255.0" pf_enable="YES" ================+==============+================= # vi /etc/pf.conf ================+==============+================= ##anchors lan_net = "192.168.0.0/24" int_if = "fxp0" ext_if1 = "rl0" ext_if2 = "rl1" ext_gw1 = "221.33.88.254" ext_gw2 = "61.0.57.254" ##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 ================+==============+================= # vi /etc/sysctl.conf net.inet.ip.forwarding=1 |
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