[Devil-linux-develop] [ devil-linux-Feature Requests-945875 ] ifplugd (Ethernet Link Detection)

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Feature Requests item #945875, was opened at 2004-05-01 07:21
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Category: Packages
Group: None
Status: Open
Priority: 5
Submitted By: Heiko Zuerker (smiley73)
Assigned to: Nobody/Anonymous (nobody)
Summary: ifplugd (Ethernet Link Detection)

Initial Comment:
The idea is to be able to run scripts based on the link
state of the card.

This project:
http://0pointer.de/lennart/projects/ifplugd/

It was originally designed for laptops, but we could
use it as well.  I have already played with it, it
works well. 

Why do I need it? (or want it)
Let's say we are perfiorming an upgrade of some kind to
the network.  Instead of getting harassing phone calls
from users, we simply unplug the WAN side of the DL
router.  Ifplugd will fire up a script that blocks all
traffic and redirects WWW to a local web server in the
DL box itself (say on port 8080).
Example:
iptables -t nat -I PREROUTING -i (LAN interface) -p tcp
--dport 80 -j REDIRECT --to-port 8080.
The users will now see a page that says: "Sorry for the
trouble...we will be back up in a little bit.  Go watch
TV."

When we plug the WAN port back in, ifplugd
automagically removes the iptables entries and life is
good.
Neat?

Who is interested?

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