UNIX Socket FAQ

justin777

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Registered: 2015-02-10

Posts: 4

Sending VLAN Packet using Socket and Impacket Python 2.7

RobSeace

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From: Boston, MA

Registered: 2002-06-12

Posts: 3,839

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Re: Sending VLAN Packet using Socket and Impacket Python 2.7

Well, I'm rusty on my Python, and am totally unfamiliar with this "Impacket" package...  But, I can tell you that in C, on Linux, if you were trying to send raw Ethernet frames, you'd want to be using an AF_PACKET socket, not an AF_INET*/SOCK_RAW socket...  (Or, alternatively an AF_INET*/SOCK_PACKET socket for older systems...)  So, I have to suspect that's your main problem...  By using AF_INET6/SOCK_RAW, it's expecting you to send out an IPv6 packet with all its headers; but, it's NOT expecting you to be sending any Ethernet headers!

justin777

Member

Registered: 2015-02-10

Posts: 4

Re: Sending VLAN Packet using Socket and Impacket Python 2.7

So normally if you will send a packet with VLAN you should not use (socket.AF_INET6, socket.SOCK_RAW, socket.IPPROTO_ICMPV6) ?

Let say in C, what are the parameters you will need like socket.socket(socket.AF_PACKET...) and what else should I keep in mind.

I can test your proposal solution tomorrow so I'm asking if I need to look out for more errors in my part

RobSeace

Administrator

From: Boston, MA

Registered: 2002-06-12

Posts: 3,839

Website

Re: Sending VLAN Packet using Socket and Impacket Python 2.7

sock = socket (AF_PACKET, SOCK_RAW, htons(ETH_P_IP));