March 2001
Intermediate to advanced
224 pages
6h 6m
English
Content preview from Policy Routing Using Linux®Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Interactions with Packet Filters
In your testing of the u32 qdisc you came to wonder what interactions exist between the NetFilter mangle and the u32 filter. You know from testing the fwmark that the mangle table can select and mark packets on input using the PREROUTING hook. You know from your u32 testing that the u32 filter can select and mark packets on ingress. Does one override the other or can they coexist?
Example 6.7—Double Play Packet
You decide to try a quick test now that you have seen good examples of both types of packet tagging. You have router1 set up with a 2.4 kernel and both the NetFilter and the DiffServ running. You then run the following set of commands to set up the tagging mechanisms for both iptables and u32:
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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