Packet Minefield

[Checkout]

Does anyone here know of a (free/cheap) product which will allow me to examine/modify incoming and outgoing TCP packets with a language such as C/C++?

Many thanks

[Zhen-Xjell]

No, don't know. What do you need it for?

[Checkout]

{QUOTE-> No, don't know. What do you need it for? <-QUOTE}

Self-education, bit twiddling, idea development, to raise my average at bowling, and make sure all your base are belong to us, I guess.

[spy1]

Have you looked at packetmon?

http://www.analogx.com/contents/download/network/pmon.htm

(Only works for W2K and XP). Don't know about the 'modify' part, but it definitely allows examination of packets. Pete

[Liquid_Fish]

Are you looking for a C++ library/component to do this or say an application with a plugin interface? *(

[UNICRON]

I use the packet sniffer ethereal (http://www.ethereal.com/) Although I use the compiled windows version, all the source code is available

the windows version employs the winpcap modules (http://netgroup-serv.polito.it/winpcap/). They may be what you are after.

[Zhen-Xjell]

After reading other responses, I see I didn't understand your question. *Did you mean is there a free source app in C/C++ that sniffs packets off the wire? *So you can examine the code?

[Liquid_Fish]

Here is an interesting idea. * *Outpost has plugin interface so you can write you own extensions to their fire wall. * I haven't had a chance to take a look at the SDK but it can be download from their site. *I wonder if you could accomplish what your looking for with that.

When I get some time I intend to see what can be done with outpost plugin's.