Date: Fri, 21 Mar 2003 17:06:53 -0800 From: Jeff Koncz <jkoncz@attbi.com> To: freebsd-questions@FreeBSD.ORG Subject: forward outgoing traffic to alias IP Message-ID: <200303211706.53897.jkoncz@attbi.com>
next in thread | raw e-mail | index | archive | help
My network provider has gotten their entire IP range listed in SPEWS beca=
use=20
of several rogue customers spamming. This in turn has caused our own mai=
l to=20
be blocked on various hosts. At the moment we're not in a situation wher=
e we=20
can move providers. So, the solution the provider suggested was to forwa=
rd=20
all outgoing port 25 traffic from the primary IP through an alias IP they=
=20
assigned that is on a different subnet. They only knew how to do this in=
=20
Linux...so they were no help. I thought it might be as simple as adding =
an=20
ipf rule, but after doing a lot of searching and reading on the topic I'v=
e=20
confused myself more. What tools should I use to accomplish this and wha=
t is=20
the best method in FreeBSD?
I'm running 4.5-STABLE. Here's the relevant lines from my /etc/rc.conf
ifconfig_fxp0=3D"inet 91.200.97.175 netmask 255.255.255.192"
ifconfig_fxp0_alias0=3D"90.61.128.211 netmask 255.255.255.255"
Here's the parameters of my interface from ifconfig:
# ifconfig fxp0
fxp0: flags=3D8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
inet 91.200.97.175 netmask 0xffffffc0 broadcast 91.200.97.191
inet6 fe80::202:b3ff:fe4c:2c01%fxp0 prefixlen 64 scopeid 0x1
inet 90.61.128.211 netmask 0xffffffff broadcast 90.61.128.211
ether 00:02:b3:4c:2c:01
media: Ethernet autoselect (10baseT/UTP)
status: active
Thanks,
- Jeff Koncz
To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-questions" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200303211706.53897.jkoncz>