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POHow to send an IP packet in Python?
 

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  1. POHow to send an IP packet in Python?
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    <p>I have sniffed an IGMP packet and now I would like to send it with the help of python. Is there any way to just send packet like </p> <pre><code>0x0000 01 00 5E 00 43 67 00 02-B3 C8 7F 44 81 00 00 DE ..^.Cg..іИD?..Ю 0x0010 08 00 46 00 00 20 00 01-00 00 01 02 36 4C C0 A8 ..F.. ......6LАЁ 0x0020 00 7B EA 00 43 67 94 04-00 00 16 00 BC 97 EA 00 .{к.Cg”.....ј—к. 0x0030 43 67 Cg </code></pre> <p>without any packet generators like impacket?</p> <p>UPD Ok, I tried to use raw sockets, like that:</p> <pre><code>dst = '234.0.67.103' # Open a raw socket. s = socket.socket(socket.AF_INET, socket.SOCK_RAW,2) res='' temp='01 00 5E 00 43 67 00 02 B3 C8 7F 44 81 00 00 DE 08 00 46 00 00 20 00 01 00 00 01 02 36 4C C0 A8 00 7B EA 00 43 67 94 04 00 00 16 00 BC 97 EA 00 43 67' for i in temp.split(' '): res+=chr(int(i, 16)) print res s.sendto(res, (dst, 0)) </code></pre> <p>Everything is fine except one little thing... If I sniff that packet, it looks like that:</p> <pre><code>0x0000 01 00 5E 00 43 67 00 02-B3 C8 7F 44 08 00 45 00 ..^.Cg..іИD..E. 0x0010 00 46 07 06 00 00 01 02-C4 25 C0 A8 00 7B EA 00 .F......Д%АЁ.{к. 0x0020 43 67 01 00 5E 00 43 67-00 02 B3 C8 7F 44 81 00 Cg..^.Cg..іИDЃ. 0x0030 00 DE 08 00 46 00 00 20-00 01 00 00 01 02 36 4C .Ю..F.. ......6L 0x0040 C0 A8 00 7B EA 00 43 67-94 04 00 00 16 00 BC 97 АЁ.{к.Cg”.....ј— 0x0050 EA 00 43 67 к.Cg </code></pre> <p>As you can see, for some reason python ignores my headers and creates its own. How can I fix it?</p>
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    1. COThis may help: http://stackoverflow.com/questions/316866/ping-a-site-in-python (there's pure python ping there - i assume you could adapt it)
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    2. COHave you tried [raw sockets](http://stackoverflow.com/questions/1117958/how-do-i-use-raw-socket-in-python)?
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    3. CO@sje397 Thanks for answer. Well, in that example they still calculate checksum, create headers and etc. But I already have ready packet and would just like to send it, without rebuilding it.
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