Very Computer

Hi!

I'm always confusing the relationship between ip-forwarding, ip
routing and the forward inside ipchains.

Please help me to unravel it.

Thanks.
Sunny

Hi!,

Quote:> Hi!

> I'm always confusing the relationship between ip-forwarding, ip
> routing and the forward inside ipchains.

IP-Forwarding: This is the process of taking a packet which arrives on one
                interface and passing it to another interface on the same
                machine.  This is normally governed by the FORWARD rule under
                ipchains, or PREROUTING under iptables.

IP-Routing: This is the process of routing a packet to the destination from
             the source address.  Refer to routing, or grab a good textbook
             on TCP/IP networks for a more detailed explanation of how the
             "magic" happens.

Forward-Rule: This is what controls what packets get forwarded from one
               interface to another.

I think the ipchains-HOWTO at http://www.linuxdoc.org might help you out.

See ya

Dean Thompson

--
+____________________________+____________________________________________+

| Bach. Computing (Hons)     | ICQ     - 45191180                         |
| PhD Student                | Office  - <Off-Campus>                     |
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+----------------------------+--------------------------------------------+

Hi!,

Quote:> I'm always confusing the relationship between ip-forwarding, ip
> routing and the forward inside ipchains.

IP-Forwarding: This is the process of taking a packet which arrives on one
                interface and passing it to another interface on the same
                machine.  This is normally governed by the FORWARD rule under
                ipchains, or PREROUTING under iptables.

IP-Routing: This is the process of routing a packet to the destination from
             the source address.  Refer to routing, or grab a good textbook
             on TCP/IP networks for a more detailed explanation of how the
             "magic" happens.

Forward-Rule: This is what controls what packets get forwarded from one
               interface to another.

I think the ipchains-HOWTO at http://www.linuxdoc.org might help you out.

See ya

Dean Thompson

--
+____________________________+____________________________________________+

| Bach. Computing (Hons)     | ICQ     - 45191180                         |
| PhD Student                | Office  - <Off-Campus>                     |
| School Comp.Sci & Soft.Eng | Phone   - +61 3 9903 2787 (Gen. Office)    |
| MONASH (Caulfield Campus)  | Fax     - +61 3 9903 1077                  |
| Melbourne, Australia       |                                            |
+----------------------------+--------------------------------------------+

Hi Dean Thompson,

Thanks for your help.

Sunny