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ipfw 'table' doens't exist? Gives "ipfw: setsockopt(IP_FW_TABLE_ADD): Invalid argument" Error

Hey,

I've recently setup ipfw to attempt to block some of the abusers
trying to gain access to my web server and have run into a problem.

I was originally using add rules like so:

add 600 deny log all from 218.0.0.0/8 to any in
add 601 deny log all from 202.0.0.0/7 to any in
add 602 deny log all from 219.0.0.0/8 to any in

But after reading some information from newsgroups I was told it's
best to use a table to deny large amounts of people as it improves
efficiency, and was told to setup my ipfw.rules like so:

ipfw table 666 add 218.0.0.0/8
ipfw table 666 add 202.0.0.0/7
ipfw table 666 add 219.0.0.0/8
ipfw table 666 add 222.0.0.0/8
ipfw table 666 add 124.0.0.0/8
ipfw add 400 deny ip from table(666) to any

However when trying to run this, I get a seres of errors that all
repeat the same thing:

"ipfw: setsockopt(IP_FW_TABLE_ADD): Invalid argument"

Not sure how to resolve this and my extensive Google searches have
turned up nothing besides C scripting for ipfw.  Any help would be
greatly appreciated.

Thanks in Advance.
0
Inferno
3/20/2008 2:18:41 PM
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Inferno wrote:
> ipfw table 666 add 218.0.0.0/8
> ipfw table 666 add 202.0.0.0/7
> ipfw table 666 add 219.0.0.0/8
> ipfw table 666 add 222.0.0.0/8
> ipfw table 666 add 124.0.0.0/8
> ipfw add 400 deny ip from table(666) to any
> 
> However when trying to run this, I get a seres of errors that all
> repeat the same thing:
> 
> "ipfw: setsockopt(IP_FW_TABLE_ADD): Invalid argument"

Your table number(s) are out of range. See 'man ipfw' the section about 
lookup tables.

> Not sure how to resolve this and my extensive Google searches have
> turned up nothing besides C scripting for ipfw.  Any help would be
> greatly appreciated.

Sometimes it helps to read the manual pages as well. :-)
-- 
Torfinn Ingolfsen,
Norway
0
Torfinn
3/20/2008 3:34:30 PM
On Mar 20, 9:34 am, Torfinn Ingolfsen <ti...@start.no> wrote:
> Inferno wrote:
> > ipfw table 666 add 218.0.0.0/8
> > ipfw table 666 add 202.0.0.0/7
> > ipfw table 666 add 219.0.0.0/8
> > ipfw table 666 add 222.0.0.0/8
> > ipfw table 666 add 124.0.0.0/8
> > ipfw add 400 deny ip from table(666) to any
>
> > However when trying to run this, I get a seres of errors that all
> > repeat the same thing:
>
> > "ipfw: setsockopt(IP_FW_TABLE_ADD): Invalid argument"
>
> Your table number(s) are out of range. See 'man ipfw' the section about
> lookup tables.
>
> > Not sure how to resolve this and my extensive Google searches have
> > turned up nothing besides C scripting for ipfw.  Any help would be
> > greatly appreciated.
>
> Sometimes it helps to read the manual pages as well. :-)
> --
> Torfinn Ingolfsen,
> Norway

Dang.  I had looked through it like three times, but I guess after 30
minutes of searching and thumbing through so much material I started
skimming and missed it.  I need to read a book or two on firewall
management.

Thanks for your help.
0
Inferno
3/20/2008 4:15:45 PM
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