http://helpdeskgeek.com/networking/determine-open-and-blocked-ports/ Help Desk Geek is a blog for Discussions about help desk tips and how-to computer tips Wed, 23 May 2012 03:17:17 +0000 hourly 1 http://wordpress.org/?v=3.3.2 http://helpdeskgeek.com/networking/determine-open-and-blocked-ports/#comment-52183 al Tue, 08 Feb 2011 08:04:10 +0000 http://helpdeskgeek.com/?p=1522#comment-52183 There is free tool for that: porttest.blogspot.com/. There is free tool for that: porttest.blogspot.com/.

]]> http://helpdeskgeek.com/networking/determine-open-and-blocked-ports/#comment-3103 Best posts on Help Desk Geek - Help Desk Tips For IT Pros from Oct 2008 Sat, 01 Nov 2008 07:01:40 +0000 http://helpdeskgeek.com/?p=1522#comment-3103 [...] How to determine open and blocked TCP/UDP ports Posted on Saturday, October 11th, 2008 in Networking - Views: (127) Looking for a way to determine which ports are open and which ports are blocked on a computer? Ports are basically logical connections between two computers or network devices for sharing data. Port numbers range from 1 to 65536 and some port numbers are assigned to specific tasks, such as port 80 for transferring HTTP data.Port 21 is for FTP, port 25 is for SMTP, port 110 is for POP3, port 23 is for Telnet, etc, etc. [...] [...] How to determine open and blocked TCP/UDP ports Posted on Saturday, October 11th, 2008 in Networking – Views: (127) Looking for a way to determine which ports are open and which ports are blocked on a computer? Ports are basically logical connections between two computers or network devices for sharing data. Port numbers range from 1 to 65536 and some port numbers are assigned to specific tasks, such as port 80 for transferring HTTP data.Port 21 is for FTP, port 25 is for SMTP, port 110 is for POP3, port 23 is for Telnet, etc, etc. [...]

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