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I have a program which uses libpcap to capture incoming TCP SYN packets, these SYN packets are destined for a specific port.
But I have no tcp listening socket for that port, so in practice, the OS Kernel(it is the kernel or the tcp stack? I'm not sure, can anyone tell me) will issue a RST to the source ip of the TCP SYN.
now I want to prevent the RST, I don't want the RST to be sent to the source ip. I think maybe iptables can do this? so how to set the rules with iptables to prevent these RSTs (which are triggered by incoming TCP SYN for a specific port)?
if there are other better solutions, that's better! thanks!
Why do you want to break the TCP protocol ? – BatchyX – 2013-04-18T16:38:52.297
I'm doing a research work, which requires this. – misteryes – 2013-04-18T16:55:39.043