Sending arbitrary TCP packets

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Dale Stanbrough - 21 Jul 2005 23:58 GMT

I'm trying to decode the protocol for an IP camera. I have ethereal
installed and have seen what goes back and forth.

I'ld like to try replaying some of the simpler messages that are used
from a PC (with ActiveX) to display live video from the camera.

I could just code up a program to send out the packets and listen
for the replies, but I'ld rather not. Are there any programs that
allow you to construct a packet and send it to a specified destination?

Thanks,

Dale

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dstanbro@spam.o.matic.bigpond.net.au

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Tom Harrington - 22 Jul 2005 21:21 GMT

> I'm trying to decode the protocol for an IP camera. I have ethereal
> installed and have seen what goes back and forth.
[quoted text clipped - 5 lines]
> for the replies, but I'ld rather not. Are there any programs that
> allow you to construct a packet and send it to a specified destination?

I think "netcat" would help. I'm not sure if it'd meet all your needs,
but if nothing else it'll simplify setting up the network connection for
a script/file that'd supply your packets.

Netcat source is at <http://netcat.sourceforge.net/>. It's also
available via Fink, and probably from Darwin Ports.

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Tom "Tom" Harrington
Macaroni, Automated System Maintenance for Mac OS X.
Version 2.0: Delocalize, Repair Permissions, lots more.
See http://www.atomicbird.com/

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Mac Forum / General / Networking / July 2005

Sending arbitrary TCP packets