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Old 06-23-2007, 11:00 PM   #1
Registered: Oct 2006
Posts: 40

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Mangle Table


I am experimenting with iptables.I couldn't get much infomration on Mangle table.i searched in net but they weren't much useeful,so please let me know the link / doc where i could find info about the mangle table

Old 06-23-2007, 11:27 PM   #2
Registered: Mar 2006
Distribution: RedHat, Slackware, Experimenting with FreeBSD
Posts: 222

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Its used to manipulate IP header fields in packets so that your TCP/IP software knows what precedence to give it. You can also MARK packets and use it in conjunction with a queuing discipline such as HTB/CBQ to control bandwidth.
Its the first table that is checked when a packet is processed (checked before 'filter' and 'nat' tables). edit: to be more precise, each chain in the mangle tables is checked before chains in the 'filter' and 'nat' table. e.g. - PREROUTING in 'mangle' is checked before PREROUTING in the 'nat' table and so on and so forth.

Last edited by SlackDaemon; 06-23-2007 at 11:54 PM.
Old 06-24-2007, 09:52 PM   #3
Registered: Oct 2006
Posts: 40

Original Poster
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Thanks for the info


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