Issues with ipmasqadm/port forwarding
Tyler Hall
plug-discuss@lists.PLUG.phoenix.az.us
Tue, 1 Jan 2002 10:29:09 -0700
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Happy New Years;=20
I'm having some issues with port forwarding. I'm using this command;
[root@router tyler]# ipmasqadm portfw -a -P tcp -L 206.100.120.175 80 -R =
192.168.0.15 80
and sometimes, I can do a nmap (from another box) and it will show port =
80 as open;
80/tcp open http =20
But other times, when I do it again, it will show it as
80/tcp filtered http =20
If its filtered, I won't be able to connect to it. It does the same =
thing with the ftp port, so I'm confused. If it's filtered, it will =
just sit there;
[root@router tyler]# ipmasqadm portfw -a -P tcp -L 206.100.120.175 1500 =
-R 192.168.0.3 21
[thall@wampa thall]$ ftp 206.100.120.175 1500
After Control-C'ing it; I try another port;=20
[thall@wampa thall]$ ftp 206.100.120.175 1358
ftp: connect: Connection refused
ftp> quit
and it refuses it right away. So its trying to make a connection, but =
just sits there. Anyone else have a idea?
Tyler
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<DIV><FONT face=3DArial size=3D2>Happy New Years; </FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>I'm having some issues with port=20
forwarding. I'm using this command;</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>[root@router tyler]# ipmasqadm portfw =
-a -P tcp -L=20
206.100.120.175 80 -R 192.168.0.15 80</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>and sometimes, I can do a nmap =
(from another=20
box) and it will show port 80 as open;</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>80/tcp =20
open =20
http </FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>But other times, when I do it again, it =
will show=20
it as</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial=20
size=3D2>80/tcp filtered &n=
bsp; =20
http </FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>If its filtered, I won't be able to =
connect to=20
it. It does the same thing with the ftp port, so I'm =
confused. If=20
it's filtered, it will just sit there;</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>[root@router tyler]# ipmasqadm portfw =
-a -P tcp -L=20
206.100.120.175 1500 -R 192.168.0.3 21</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>[thall@wampa thall]$ ftp =
206.100.120.175=20
1500</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>After Control-C'ing it; I try =
another port;=20
</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>[thall@wampa thall]$ ftp =
206.100.120.175=20
1358<BR>ftp: connect: Connection refused<BR>ftp> quit</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>and it refuses it right away. So =
its trying=20
to make a connection, but just sits there. =
Anyone else=20
have a idea?</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>Tyler</FONT></DIV>
<DIV> </DIV></BODY></HTML>
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