RSS Feed

Please wait while my feed loads

See more posts...

Newsletter

Subscribe to either one of our two newsletters for regular updates and information

Downloads newsletter

This is a weekly newsletter with download news, updates and other information

This is a monthly newsletter with software store information, offers and deals

Why Can't I Connect? 1.11.0

Troubleshoot TCP/IP connection errors

by Mike Williams

Our Rating:
Your Rating:
Login to rate
Based on 1 ratings
License: Open Source
Operating Systems: Linux, Windows 7 (32 bit), Windows 7 (64 bit), Windows 8, Windows Server, Windows Vista (32 bit), Windows Vista (64 bit), Windows XP
Requirements:
Languages: English, Chinese (Simplified), Czech, Danish, Dutch, French, German, Hindi, Italian, Polish, Portuguese, Spanish
Software Cost: Free
Date Updated: 15 June 2015
Watchlist: Add download to my watchlist
Downloads To Date: 2468
Developer: Chris Ohmstede
RSS News Feed: http://sourceforge.net/api/file/index/project-id/1899022/mtime/desc/limit/20/rss
Back in stock! Buy Malwarebytes Anti-Malware Premium v2 with a 1-PC LIFETIME license, only $24.95, from store.downloadcrew.com
Why Can't I Connect?
Troubleshoot TCP/IP connection errors

Why Can't I Connect? is an open source tool which helps you identify and solve TCP/IP connection errors. It has direct support for connecting to a range of common server types (Microsoft SQL Server, MySQL Server, FTP, SFTP, IMAP, POP3, SMTP, IRC, LDAP, Usenet), as well as providing generic client and server options.

If you can't receive email from a POP3 server, say, you would choose the POP3 option, enter your server name or IP address, and optionally select a protocol (STARTLS, SSL/ TLS) or enter a port. (You don't have to enter a user name or password at any point, and so there's no need to worry about security: Why Can't I Connect? tries to reach the server only, it doesn't handle authentication.)

Once you're set up, click OK and Why Can't I Connect? attempts to make the connection, reporting on what happens every step of the way. This includes identifying the current host name, checking for a bindable IP address, binding it to a socket handle, setting the receive and send timeouts, locating an IP address for the server and trying to make the connection.

If any of this fails then an error message appears with possible explanations: "your network connection is down", your DNS server is down", "the port is being blocked by a firewall", "the server is slow", and so on.

This final analysis won't usually give you a definitive answer. When we tried running a POP3 connection to a web server, for instance, we got a "permission denied" error, with suggestions including "your network connection is down", "the port is not listening/ active", "the port is being blocked by a firewall", "the maximum connections for the server has been exceeded". The second was correct - there was nothing listening at port 110 - but Why Can't I Connect? has no way to know that for sure, and you'll need to do more work to turn its report into a solution.

The program can help point you in the right direction, though, and it has some welcome bonus features thrown in. Bridging (tracing the conversation between an existing client and server) is our favourite, but there are also tools to report on connecting/ listening/ reserved ports, and a scripting option can automate testing to track down intermittent errors.

Version 1.11.0:

- Added multiple trace font styles.
- Switched the remembering of a server to when the name is resolved instead of when the name is -connected.
- Switched the Ports In Use default port type to listening.
- Fixed a bug in the Script Save As to include the script run time parameters.

Verdict:

Why Can't I Connect? provides a good range of tools for tracing various TCP/IP connection types. If you're an experienced network user then it's a must for your troubleshooting toolkit.

Your Comments & Opinion
 
Related Download Articles
 
ProcNetMonitor

ProcNetMonitor 5.0

Freeware

Analyze your PC's open network connections

Technicians Toolbox

Technicians Toolbox Portable 1.1.0

Freeware

20+ PC maintenance and management tools

NetCrunch Tools

NetCrunch Tools 1.0

Freeware

A free network troubleshooting toolkit

Desktop Connect for iPad

Desktop Connect for iPad 2.0.2

Trial Software

Remotely access your PC or Mac from your iPad

Other Download Articles From This Category
PingPlotter Free

PingPlotter Free 4.1.2.14

Freeware

Take a graphical view of network performance

NetworkConnectLog 1.04

NetworkConnectLog 1.04

Freeware

Log everything that connects to your network

NetSetMan

NetSetMan 4.0.3

Free, for personal-use only

Reconfigure your laptop's network settings at a click

TeamViewer 10.0

TeamViewer 10.0.43879

Free, for personal-use only

Remotely control or access another computer over the internet

From Softwarecrew

Please wait while my feed loads

See more posts...

Our Price: $44.95
RRP: $89.95
Saving 50%
Buy Now
Offer Ends In:
 

Spotlight: Free Full Software

Unreal Engine 4.8

Free Full Commercial Software

Unreal Engine is Epic Games' game engine, a powerful suite of tools for developing anything from basic 2D games to professional RPGs, first person shooters and whatever else you like.

Wide standards support - DirectX, OpenGL, JavaScript/ WebGL - means your projects can be targeted to almost any platform: consoles, iOS, Android, Windows, OS X, Linux, HTML5 browsers and more.

There's a vast amount to learn, of course, and that's even before you start building your game. But there's plenty of documentation, tutorials, demos and sample projects to point you in the right direction.

The package is now entirely free, too - no annoying limitations, nag screens or anything else. Epic now only requires that you pay a 5% royalty after the first $3,000 of revenue per product per quarter. And even then, you "pay no royalty for film projects, contracting and consulting projects such as architecture, simulation and visualization."

8.48 brings:
    - Optimized grass rendering and procedural foliage system preview
    - Plugins available in Marketplace
    - Improved accuracy for motion blur
    - New Tone Mapper
    - Support for all the latest VR hardware including Oculus Rift, Samsung Gear VR, Steam VR and HTC Vive, Leap Motion, and Sony's Project Morpheus for PlayStation 4
    - "Scrubbable" network replays with rewind support and live time scrubbing
    - Visualize the memory footprint of game assets in an interactive tree map UI

[...]
Value:
Free
Rating: