Unblock a Blocked Port ~ Idle Brains
3
5/7/12 Unblock a Blocked Port ~ Idle Brains 1/3 www.idlebrains.in/2012/02/unblock-blocked-port.html HOM E CONTACT US ABOUT US DISCLAIMER PRIVACY POLICY HOME HOME NEWS NEWS TECHNOLOGY TECHNOLOGY APPLICATIONS APPLICATIONS GADGETS GADGETS HOW TO HOW TO WHAT IS WHAT IS FINANCE FINANCE SPECIALS SPECIALS DISCUSSIONS DISCUSSIONS TUTORIALS TUTORIALS FUN FUN 3 8 SUNDAY, 12 FEBRUARY 2012 Unblock a Blocked Port Posted by Pritam on 22:26 Let’s talk about network ports, their requirement in computer world and all bits and bytes related to them. WHY DO WE REQUIRE PORTS AFTER ALL? A port number is basically an interface through which a sender machine communicates with the application on the receiver’s machine. Every application opens a port for the other machines to communicate with the application. Thus port numbers work like telephone extensions. Just as a business telephone switchboard can use a main phone number and assign each employee an extension number (like x100, x101, etc.), a computer has a main address and a set of port numbers to handle incoming and outgoing connections. So whenever a machine wants to exchange message with another machine it ought to do it via the application port. BITS n Bytes of ports A port is associated with an IP address of the host, as well as the type of protocol used for communication. Primarily transport layer protocols (such as TCP or UDP) use ports. A port is identified for each address and a protocol by a 16-bit number, thus valid port numbers are from 0 to 65535(2^16).These port numbers are divided into three ranges: 1. Well-known ports 2. Registered ports 3. Dynamic or private ports. The well-known ports are those from 0 through 1023. For example: 20 & 21 : File Transfer Protocol (FTP) 22: Secure Shell (SSH) 23: Telnet remote login service 25: Simple Mail Transfer Protocol (SMTP) 53: Domain Name System (DNS) service 80: Hypertext Transfer Protocol (HTTP) used in the World Wide Web 110: Post Office Protocol (POP3) 119: Network News Transfer Protocol (NNTP) 143: Internet Message Access Protocol (IMAP) 161 : Simple Network Management Protocol (SNMP) 443: HTTP Secure (HTTPS) The registered ports are those from 1024 through 49151 and the dynamic or private ports are from 49152 through 65535. Unblock a blocked port: Many times browsers block some ports to prevent attacks that exploit vulnerable services but as a developer you may be requiring those ports for development purposes. Here is a list of steps to unblock a port on a browser. FOLLOW US FOLLOW US 3 POPULAR POSTS POPULAR POSTS Free Games and Applications for Nokia Users on Selected Models Nokia has announced some premium applications and games to be available for free to its selected users. The offer will be available for ... Indian Student Sachin S Kukke is Winner of Asia-Pacific Region in YouTube Space Lab Contest Sachin S Kukke - An Indian Student was winner of Asia-Pacific Region in YouTube Space Lab Contest India unarguably had a glorious hist... Famous Quotes By Nelson Mandela A good head and a good heart are always a formidable combination “A winner is a dreamer who never gives up” "There is no such ... Samsung Galaxy Ace Plus, Micromax FunBook, HCL ME U1 and HCL MyEdu Launched In Quick Succession It's raining Smartphones and Tablets. In last 2 days, smartphone giant Samsung , Indian manufacturer Micromax and HCL Infosystems launc... Microsoft LINQ with .NET Framework - An Introduction LINQ , acronym for Language INtegrated Query , is a collection of standard query operators that provides querying facility into .NET fra... Interesting X Series : Facts About Banks Of India The Ace : Reserve Bank of India Banks are the integral part of the Indian Economy . The pathway from the first ever bank to t... YouTube Shows - Watch Hindi Serials Online Are you a serial buff?? Do you love TV shows but your so called flexible work timings which keeps you stuck in office more than required ... Email address... Submit 6 Like
Transcript of Unblock a Blocked Port ~ Idle Brains
5/7/12 Unblock a Blocked Port ~ Idle Brains
1/3www.idlebrains.in/2012/02/unblock-blocked-port.html
HOME CONTACT US ABOUT US DISCLAIMER PRIVACY POLICY
HOMEHOME NEWSNEWS TECHNOLOGYTECHNOLOGY APPLICATIONSAPPLICATIONS GADGETSGADGETS HOW TOHOW TO WHAT ISWHAT IS FINANCEFINANCE SPECIALSSPECIALS DISCUSSIONSDISCUSSIONS TUTORIALSTUTORIALS FUNFUN
3 8
S U N D A Y , 1 2 F E B R U A R Y 2 0 1 2
Unblock a Blocked PortPosted by Pritam on 22:26
Let’s talk about network ports, their requirement in
computer world and all bits and bytes related to
them.
WHY DO WE REQUIRE PORTS AFTER ALL?
A port number is basically an interface through
which a sender machine communicates with the
application on the receiver’s machine. Every
application opens a port for the other machines to
communicate with the application.
Thus port numbers work like telephone extensions. Just as a business telephone
switchboard can use a main phone number and assign each employee an extension
number (like x100, x101, etc.), a computer has a main address and a set of port numbers
to handle incoming and outgoing connections. So whenever a machine wants to exchange
message with another machine it ought to do it via the application port.
BITS n Bytes of ports
A port is associated with an IP address of the host, as well as the type of protocol used
for communication. Primarily transport layer protocols (such as TCP or UDP)
use ports.
A port is identified for each address and a protocol by a 16-bit number, thus valid port
numbers are from 0 to 65535(2^16).These port numbers are divided into three ranges:
1. Well-known ports
2. Registered ports
3. Dynamic or private ports.
The well-known ports are those from 0 through 1023. For example:
20 & 21: File Transfer Protocol (FTP)
22: Secure Shell (SSH)
23: Telnet remote login service
25: Simple Mail Transfer Protocol (SMTP)
53: Domain Name System (DNS) service
80: Hypertext Transfer Protocol (HTTP) used in the World Wide Web
110: Post Office Protocol (POP3)
119: Network News Transfer Protocol (NNTP)
143: Internet Message Access Protocol (IMAP)
161: Simple Network Management Protocol (SNMP)
443: HTTP Secure (HTTPS)
The registered ports are those from 1024 through 49151 and the dynamic or private
ports are from 49152 through 65535.
Unblock a blocked port:
Many times browsers block some ports to prevent attacks that exploit vulnerable services
but as a developer you may be requiring those ports for development purposes. Here is
a list of steps to unblock a port on a browser.
F O L L O W USF O L L O W US
3
P O P UL AR P O S T SP O P UL AR P O S T S
Free Games and Applications forNokia Users on Selected ModelsNokia has announced some premiumapplications and games to be available for free to
its selected users. The offer will be available for...
Indian Student Sachin S Kukke isWinner of Asia-Pacific Region inYouTube Space Lab ContestSachin S Kukke - An Indian Student was winnerof Asia-Pacific Region in YouTube Space Lab
Contest India unarguably had a glorious hist...
Famous Quotes By Nelson MandelaA good head and a good heart are always aformidable combination “A winner is a dreamerwho never gives up” "There is no such ...
Samsung Galaxy Ace Plus, Micromax FunBook,
HCL ME U1 and HCL MyEduLaunched In Quick SuccessionIt's raining Smartphones and Tablets. In last 2
days, smartphone giant Samsung , Indian manufacturerMicromax and HCL Infosystems launc...
Microsoft LINQ with .NET Framework- An IntroductionLINQ , acronym for Language INtegrated Query ,is a collection of standard query operators thatprovides querying facility into .NET fra...
Interesting X Series : Facts AboutBanks Of IndiaThe Ace : Reserve Bank of India Banks are theintegral part of the Indian Economy . The pathwayfrom the first ever bank to t...
YouTube Shows - Watch Hindi SerialsOnlineAre you a serial buff?? Do you love TV shows butyour so called flexible work timings which keeps
you stuck in office more than required ...
Email address... Submit
6Like
5/7/12 Unblock a Blocked Port ~ Idle Brains
2/3www.idlebrains.in/2012/02/unblock-blocked-port.html
Newer Post Older Post
FIREFOX
1. Open Firefox and type about:config in the address bar.
2. This will open up all the configuration settings for Firefox.
3. Search for network.security.ports.banned.override key (using filter
textbox).
4. You need to create the key if it’s not present already.
5. Right click anywhere in the Firefox window and select New and then String.
6. Give following nameto the key : network.security.ports.banned.override
7. In the value column add the port you want to unblock.
CHROME
1. Right click on the chrome icon.
2. Go to Properties.
3. There you will find a Target text field.
4. The value there would be something like
this, C:\Users\Your_user_name\AppData\Local\Google\Chrome\Appli
cation\chrome.exe.
5. Modify the above value as
follows: C:\Users\Your_user_name\AppData\Local\Google\Chrome\Ap
plication\chrome.exe --explicitly-allowed-ports=111,113.
In the above line 111, 113 are the ports you want to unblock.
This is how we can use the restricted ports. Do write in your queries in the comments
section.
Home
F O L L O W ERSF O L L O W ERS S UBS CRI BE T OS UBS CRI BE T O
Fabulous Quotes : You Will LoveThem For Sure
Memory efficient Doubly Linked List -XOR LInked ListHave you ever realized what is at the core ofinternet? Any guesses? Yes it is data andinformation. Large and large chunks of data is ...
What Happens In An Internet Minute?What Happens In An Internet Minute? We all areliving in internet era . Everything is going online.Our lifestyle has changed drastica...
ARCHI V ESARCHI V ES
▼ 2012 (69)
► April (7)
► March (22)
▼ February (31)
Monetary Policy of India: Part- I
Building Chrome Extensions From Scratch - Part 2
Apache celebrates 17th anniversary with Apache HTT...
Samsung Mobile is 2011's Top Brand in Social Media...
Building Chrome Extensions From Scratch - Part 1
Barclays Pingit : Transfer Money Mobile Phone to M...
Fixed Income Bonds - Part 3
Microsoft LINQ with .NET Framework - An Introducti...
Fixed Income Security – Bonds Part 2
Time Value of Money
Famous Quotes by Nelson Mandela - Part 2
Save extra tax with New Payment Scheme (NPS)
jQuery : Exploring Deferred and Promise methods
Unblock a Blocked Port
Acer CloudMobile Smartphone Unveiled
Fixed Income Security - Bonds
We Solve For X - Google's Approach to Find Solutio...
How to Verify Technorati Claim Token
Create Google Chrome Profiles - Step By Step Guide...
Google's First Hire Departing to Join Khan Academy...
Major roles played by Investment Banks
Basic Concepts of Money Market
Structure of Windows Registry
Famous Quotes By Nelson Mandela
Learning .NET Regular Expressions, Regex Part-1
Issuing process of an IPO
Quotes About Life
Basics of an IPO
Inspirational Quotes to Overcome Failure
Understanding basic concepts of Stock Market
DMARC.ORG - A Fight Against Phishing with Leading ...
► January (9)
► 2011 (57)
Powered by Blogger.
Understanding
Future as a
Derivative
Instrument ...
Issuing process
of an IPO
Time Value of
Money
Java 7 - New
Language
Features
What is Virtual
Memory
Monetary Policy
of India: Part- I
Interesting X
Series - Apple
iOS
Huge Money in
Blogging:
Mashable set to
be sold ...
Difference
between Stack
and Heap
India Against
Corruption Apps
In Store
You may also like to read
Posts
Comments
5/7/12 Unblock a Blocked Port ~ Idle Brains
3/3www.idlebrains.in/2012/02/unblock-blocked-port.html
Join this siteJoin this site
w ithGoogleFriendConnect
Idle Brains © 2011 | Theme by : Premiumbloggertemplates.com | Disclaimer | Privacy Policy
