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Open All TCP/IP Ports (requires other files)
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| Submitted on: 1/3/2004 4:44:48 AM
By: Xoff_Matt
Level: Intermediate
User Rating: Unrated
Compatibility:VB 6.0
Users have accessed this code 729 times.
| (About the author) |
| | | Open All the TCP Ports on your computer - to see what people are trying to connect/send to you, also it is a simple frame capture program.
It works best with a software based firewall installed like N.I.S. because firewalls normally 'stelth' the ports so it does not send a SYNC packet back saying 'The port is not open'. Then this program see's the attempt (bypassing firewall) - opens that port - and the remote computer should have tried again automaticly.
Requires 'WinPcap' -
http://winpcap.polito.it/install/default.htm
and An ActiveX control 'PacketX' -
http://www.beesync.com/downloads.html
(there grate)
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Windows API/Global Declarations: Can't Copy and Paste this?
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'**************************************
'Windows API/Global Declarations for :Op
' en All TCP/IP Ports (requires other file
' s)
'**************************************
CopyMemory |
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| Other User Comments |
1/3/2004 7:29:58 AM:B.Cem HANER
PacketX.DLL Error. Where is this DLL ?
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1/4/2004 8:21:15 AM:Christopher J. Bradley
He's explained that the DLL is not in
that zip, and has given a URL address
to it.
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1/6/2004 8:11:30 AM:Coding Genius
I haven't looked at the code, but
''Open All TCP/IP Ports'' seems to
imply that you will be opening all
65535 ports and setting them to listen
mode in order to see who tries to
connect to which port. (Please correct
me if I'm wrong). Now if this is the
case, I imagine it must take up a huge
amount of resources (65535 sockets!)
and even more so if you're using that
nasty winsock control (65535 winsock
controls! bye bye RAM!). If you really
want to see the incoming traffic to
your computer without (a) restricting
other programs from opening certain
ports, and (b) using up all your RAM
and thensome, then use a packet sniffer
(search for my name and you'll find a
proper one on here)
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1/7/2004 5:06:03 AM:Xoff_Matt
hello, thats true - it only opens the
port number when it see's a request to
it. Then winsock opens that port just
for a time, capturing the incoming
data(until the remote side closes it).
It could open 64K ports but in reality
only 1 port is open at a time. I see
your a cleaver man - I tried to
send back a simulated snyc packet so
the remote computer thinks the port is
open so it can send its data to the
local host. But I have problems getting
the checksum correct in the IP header
(one's complement blaa blaa blaa), so I
used winsock instead. I
supposed I should have called it
'Opening all TCP ports on the fly' ?.
Your packet sniffer is very
cool!!!, I'm not good when it comes to
using asm myself :(
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