How can I modify the destination port of an incoming TCP packet

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4 total messages Started by news.ust.hk Fri, 28 Mar 2003 10:55

#80

Author: news.ust.hk
Date: Fri, 28 Mar 2003 10:55

6 lines
2204 bytes

Does anybody know what API can I use to monitor the destination port TCP
packet out/in of my
computer? Furthermore, is it possible that write a program which can alter
the destination port of
a packet before the packet is sent out or process by application? Is there
any sample code of this kind of function?(in VC or VB), thanks a lot.......

Re: How can I modify the destination port of an incoming TCP packet

#81

Author: Shane McDaniel
Date: Fri, 28 Mar 2003 14:58

19 lines
2466 bytes

"news.ust.hk" wrote:
> 
> Does anybody know what API can I use to monitor the destination port TCP
> packet out/in of my
> computer? Furthermore, is it possible that write a program which can alter
> the destination port of
> a packet before the packet is sent out or process by application? Is there
> any sample code of this kind of function?(in VC or VB), thanks a lot.......

You need to ask this question in a group that specifically deals with
your platform and whatever package you are using for network
communication.

The C++ standard does not include any of this.

-shane

Re: How can I modify the destination port of an incoming TCP packet

#82

Author: Kevin Goodsell
Date: Fri, 28 Mar 2003 19:28

23 lines
2716 bytes

On Fri, 28 Mar 2003 18:55:24 +0800, "news.ust.hk" <maxlaw@sinaman.com>
wrote:

>Does anybody know what API can I use to monitor the destination port TCP
>packet out/in of my
>computer? Furthermore, is it possible that write a program which can alter
>the destination port of
>a packet before the packet is sent out or process by application? Is there
>any sample code of this kind of function?(in VC or VB), thanks a lot.......
>
>

Excessive cross-posting is very bad usenet form. Please be more
considerate in the future.

Your question is off-topic in comp.lang.c++, which is for discussion
of the standard C++ language. That language has no built-in support
for networking of any kind.

To the other groups: Please remove comp.lang.c++ from the cross-post
list when replying. Thank you.

-Kevin

Re: How can I modify the destination port of an incoming TCP packet

#83

Author: Vadim V. Smirnov
Date: Tue, 01 Apr 2003 10:28

20 lines
2358 bytes

Take a look

http://www.ntkernel.com/products/winpkfilter.shtml
http://www.ntkernel.com/articles/firewalleng.shtml

Regards,
Vadim

"news.ust.hk" <maxlaw@sinaman.com> wrote in message
news:b619mr$4pu$1@news.ust.hk...
> Does anybody know what API can I use to monitor the destination port TCP
> packet out/in of my
> computer? Furthermore, is it possible that write a program which can alter
> the destination port of
> a packet before the packet is sent out or process by application? Is there
> any sample code of this kind of function?(in VC or VB), thanks a
lot.......
>
>
>

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