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- If your kernel version is before 2.1.102; you need the ipfwchains
- patch to the 2.1.x or 2.0.x kernel series.
-
- You need to be running a kernel compiled with CONFIG_IP_FIREWALL (for
- 2.1.102 and above) or CONFIG_IP_FIREWALL_CHAINS set to `y'. You can
- tell that your current kernel is compiled with this by looking for
- `/proc/net/ip_fwchains' - if it exists, then your kernel is ready for
- the ipchains utility.
-
- See the HOWTO (available in plain text here, or from the web page in
- other formats) for details. There is also an excellent quick
- reference card by Scott Bronson, in A4 and US Letter sizes (best
- printed double-side). This was written in Word Perfect 7 on Linux;
- ask bronson@soda.berkeley.edu if you want it in that format.
-
- The concept and chunks of the implementation were grabbed from ipfwadm
- 2.3; the name has been changed to avoid confusion, as `ipfwadm' will
- NOT work with kernels with the new firewall code. Also, I took the
- opportunity to rationalize the command line parameters, making it
- perhaps more difficult for ipfwadm users (not necessarily a bad thing,
- as it highlights the differences) but hopefully making things more
- sane in the long run.
-
- In recognition of the fantastic work done by Jos Vos, without whom I
- would have had no code or concepts to guide me, here is the original
- copyright notice from many of the files. (Do NOT contact Jos with
- problems in these utilities; they are almost certainly things I
- wrecked, and complaining to him would be unfair and unrewarding).
-
- ================
- Copyright (c) 1995,1996 by X/OS Experts in Open Systems BV.
- All rights reserved.
-
- Author: Jos Vos <jos@xos.nl>
-
- X/OS Experts in Open Systems BV
- Kruislaan 419
- 1098 VA Amsterdam
- The Netherlands
-
- E-mail: info@xos.nl
- WWW: http://www.xos.nl/
- ================
-
- Paul ``Rusty'' Russell,
- Paul.Russell@rustcorp.com.au.
- &
- Michael Neuling,
- mneuling@radlogic.com.au
-