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I was found some miss in my code. Hower, thank you for your reply.
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I was found some miss in my code. Hower, thank you for your reply.

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I am writing a program make the function packet forwarding.<br />
I have a pc with two ether card A and B.<br />
I disabled ip forwarding.<br />
I use raw socket to capture packet from ether A, and then send this packet through ether B. However, I receive this ICMP error: Code: 10 (Host administratively prohibited).<br />
I think this error cause by I was disabled ip forwarding, but I don't know how to fix it. <br />
And if I turn on ip forwarding, how to configuration for ether A don't forward some kind of packet though ether B like that: tcp packet?<br />
<br />
I need help.<br />
Thanks!!!
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I am writing a program make the function packet forwarding.
I have a pc with two ether card A and B.
I disabled ip forwarding.
I use raw socket to capture packet from ether A, and then send this packet through ether B. However, I receive this ICMP error: Code: 10 (Host administratively prohibited).
I think this error cause by I was disabled ip forwarding, but I don't know how to fix it. 
And if I turn on ip forwarding, how to configuration for ether A don't forward some kind of packet though ether B like that: tcp packet?

I need help.
Thanks!!!

ICMP Code: 10 (Host administratively prohibited)

Kernel programming for Linux operating systems can be done with many different languages; C, C++, Python, Perl and Java, which are some of the most common languages used.There are also many different varieties of Linux, such as Ubuntu, Fedora and OpenSUSE.

Linux OS Dev

The variety of Linux distributions creates myriad issues relating to configuration and operations when computers are networked, not the least of which is the use of various network management applications, some of which are included with specific distributions, while others are standalone applications.