For an assignment i have to create a tcp hijack attack and one of the first steps i have to take is sending a TCP packet to a server to get a response with a sequence number. The server responds to rlogin requests, i tested with nping on tcp to get a response from the server which succeeds but if i try to use my own created tcp packet I dont get any response.
In the image you can see my packet and the one create by nping, i dont get any response from my own packet but i do from the one created by nping. I find this strange because to my knowledge the packets should be the same.
I have no idea how to find the cause of this problem.
