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Old 10-05-2007, 01:28 AM   #1
koobi
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Using iptables for something very specific - bandwidth based on user/day/time


Hi,
I'm very new to iptables but i've been reading the manual the last few days and i really like it so i was trying a few things out but i need your help.

on weekdays, between 4am and 4pm, i want to limit all root users on my local network to an equal amount of HTTP bandwidth. suppose my total download speed is 60kbps, if there are two root users logged on, i want each user to have 30kbps but if there are three users, i want to give each user 20kbps, etc. how would i append my rule below in order to achieve this? i believe i have to use the hashlimit module to use this feature but i'm not sure how.


also, is my usage of --uid-owner below correct? or should it be prefixed by '-m state'?


Code:
iptables -A INPUT -p tcp --dport http --timestart 04:00 --timestop 16:00 --days Mon,Tue,Wed,Thu,Fri -s 192.168.0.0/16 --uid-owner 0 -m state --state NEW -j ACCEPT

Thanks.
 
Old 10-05-2007, 01:54 AM   #2
win32sux
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--uid-owner only works on the OUTPUT chain. As for your syntax, matches need to be preceeded by the module they belong to. Since --uid-owner belongs to the owner module, it goes like:
Code:
-m owner --uid-owner example

Last edited by win32sux; 10-05-2007 at 01:58 AM.
 
Old 10-05-2007, 02:04 AM   #3
koobi
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Quote:
Originally Posted by win32sux View Post
--uid-owner only works on the OUTPUT chain. As for your syntax, matches need to be preceeded by the module they belong to. Since --uid-owner belongs to the owner module, it goes like:
Code:
-m owner --uid-owner example
Hi,
Thanks for the reply.

the uid issue makes sense.

regarding the -m switch, how would this be valid then? since --dport belongs to a module, right?
Code:
iptables -A INPUT -p tcp --dport ssh -m comment --comment "work PC" -s 10.0.0.15 -j ACCEPT


also, could you guide me on how to manage logs based on syslogd? i read that dmesg and syslogd are the two methods to store logs...i'm not too fond of dmesg even with grep so i was hoping to try out syslogd.
 
Old 10-05-2007, 02:29 AM   #4
win32sux
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Quote:
Originally Posted by koobi View Post
regarding the -m switch, how would this be valid then? since --dport belongs to a module, right?
The ability to use --dport is implicit once you use a -p or --protocol for a protocol which has a "ports" concept.

Quote:
also, could you guide me on how to manage logs based on syslogd? i read that dmesg and syslogd are the two methods to store logs...i'm not too fond of dmesg even with grep so i was hoping to try out syslogd.
This is an off-topic issue. Try doing some searching and if you don't find the info you want please start a new thread.

PS: I'm moving this thread to Networking, as it's not a security question. I'll leave a redirect here for a couple days.

Last edited by win32sux; 10-05-2007 at 04:29 AM.
 
  


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