Fake localhost?

superpig · 2003-08-05T20:52:56

How easy is it for someone to fool a machine into thinking they have the address 127.0.0.1? I''m using the IP address as a way of detected when a connection is coming from the same machine - allowing me to send messages directly to a location in memory rather than using the networking system - but I want to know how secure it is. If it''s not secure, someone could send a message persuading the game to write stuff to an arbitrary location in memory (thus compromising security). Superpig - saving pigs from untimely fates, and when he''s not doing that, runs The Binary Refinery.Enginuity1 | Enginuity2 | Enginuity3

Networking and Multiplayer Programming

Started by superpig July 28, 2003 04:54 AM

10 comments, last by superpig 20 years, 8 months ago

Mastaba

761

August 04, 2003 04:57 PM

Easiest solution is to ask your ISP admin if they have filtering to prevent such spoofing. Though of course, even if they say they did, that''s not absolute insurance.

ggs

166

August 05, 2003 08:52 PM

quote:Original post by cbenoi1
On Windows, I honestly don''t know how that would be handled without incurring some very noticeable overhead (i.e. by filtering using a RAW socket).

I guess you could use TCP/IP & UDP filtering, and just block any traffic inbound from 127.0.0.1 (or any other local host address). But depending on how winsocks handles loopbacks, this may cause some issues(but really really shouldnt).

Fake localhost?

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Fake localhost?

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