Talk:Reverse path filtering

Move to reverse path filtering

Isn't this actually "reverse path filtering"? - "reverse path forwarding" is something different, it is used with Multicast Routing (e.g. PIM), where (S,G) joins are issued on the path towards the multicast source and the multicast packets therefore flow along the "reverse path" to the destination... --Eqvinox 12:14, 13 August 2005 (UTC)[reply]

Sorry, just checked the "What links here" page. "reverse path filtering" actually redirects here, this IMHO is a bit bad. RP-forwarding is the multicast stuff, RP-filtering the unicast stuff. There doesn't seem to be a Multicast reverse path forwarding page yet. --Eqvinox 12:17, 13 August 2005 (UTC)[reply]

You know, you're absolutely right. How did I not catch this! Feel free to fix. -- Biot 18:51, August 13, 2005 (UTC)

- Well, i can't fix it since I just registered and am not allowed to move pages. Is it actually even possible to overwrite a redirect by moving a page "over it"? Not really sure... (I'd move this page to "Reverse path filtering", add a note about the ambiguity, and create a page about Multicast reverse path forwarding) --Eqvinox 02:24, 14 August 2005 (UTC)[reply]

This is right. Should be called filtering.. or at least have a disambiguation page between Multicast reverse path forwarding and this subject, which is a type of unicast filtering technology. --Mysidia (talk) 02:34, 14 August 2005 (UTC)[reply]

I've been working on an application involving load-balancing with two ISP's. One of the ISP's (or one of its upstream providers) is apparently doing reverse path filtering because I can't send a packet out via ISP2 with a source IP assigned by ISP1 (but the reverse case works - only ISP2 seems to be doing the filtering). I'm wondering if it's appropriate to put a discussion about this legitimate use of spoofing in this article, or should it be confined to just the definition of RPF? BillMichaelson 17:48, 4 July 2007 (UTC)[reply]

I'm pretty sure this is NOT reverse path filtering. RFC 3704 which defines it, clearly labels it as Reverse Path Forwarding, NOT filtering. Can anyone produce a more authoritative source that calls it Reverse Path Filtering? mc2lagrange 17:19, Sep. 11 2007