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Author	Message
sharpium64 Member	# Posted: 29 May 2009 00:34 - Edited by: sharpium64 Hello everybody, I have a rare problem about forwarding ports. I can't access my modem's port options. In "192.168.100.1" I olny see mac address, serial number etc. under "About Your Modem". When I click the other tabs it says "This feature is not enabled" This is my ipconfig info My external ip is the same as the internal. I don't have a router so I connect it directly to the modem via RJ45 ethernet. My ISP uses a Cable modem - WebSTAR DPC2100 http://www.cisco.com/web/consumer/support/modem_DP C2100.html I have succeded forwarding ports in my other Prolink ADSL (another ISP) by following the guides provided by portforward.com. But this cable modem and ISP is completely different and I don't have any idea how to do it. Can you please guide me forwarding ports in this modem. Thank you, Very much I really appreciate your help. PC Specs: WinXP SP2 Athlon 3800x2 2ghz Asus M2V 2GB RAM
Shnerdly Moderator	# Posted: 29 May 2009 17:41 - Edited by: Shnerdly Welcome to the forum sharpium64. From what I can tell by reading the user guide for the DPC2100, it is a Cable Modem only. It does not have a router or firewall built in so it won't block any ports. What problem are you having that causes you to think a port needs to be forwarded?
sharpium64 Member	# Posted: 30 May 2009 03:48 - Edited by: sharpium64 Thank you very much Shnerdly. I check ports from http://www.canyouseeme.org/ Every ports I enter are blocked. Btw, I disabled firewall and antivirus. But the strange thing is whenever I start uTorrent and test the port that uTorrent is using, canyouseeme.org says it's open. But when I close uTorrent canyouseeme.org says the port is close. Why is that? Should I run an application first before a port will be open? Thanks
Shnerdly Moderator	# Posted: 30 May 2009 18:14 - Edited by: Shnerdly Are you actually having a problem with some specific software that is telling you that you need to forward a port? I host a Web and FTP server here and it showed that they could access those ports as it should but when I ran their test on port 110, it showed it as inaccessible yet I am able to send and receive email on my system which is port 110. Based on that, I would say that their test is flawed. It seems that if the port is not active on your network, canyouseeme shows it as an inaccessible port because it finds no resource there.
sharpium64 Member	# Posted: 1 Jun 2009 03:26 Almost all online port scanners show the same results when testing a port with no software listening to it. Like these sites: http://www.whatsmyip.org/ports/ http://www.utorrent.com/testport.php It only shows open if there's an application listening to that specific port. I'm just a little bit confused on how port works. I use uTorrent and the ports are working perfectly if it is running when I test it. Thank you very much for explaining. Now I know how port works. This community is very helpful. Wish you all the best.

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