December 1, 2008

PuTTY Connection Manager

Filed under: Microsoft Windows, Miscellaneous — Nasser Heidari @ 12:46 pm

http://puttycm.free.fr/

Features

Tabs and dockable windows for PuTTY instances.
Fully compatible with PuTTY configuration (using registry).
Easily customizable to optimize workspace (fullscreen, minimze to tray, add/remove toolbar, etc…).
Automatic login feature regardless to protocol restrictions (user keyboard simulation).
Post-login commands (execute any shell command when logged).
Connection Manager : Manage a large number of connections with specific configuration (auto-login, specific PuTTY Session, post-command, etc…).
Quick connect toolbar to quickly launch a PuTTY connection.
Import/Export whole connections informations to XML format (generate your configuration automatically from another tool and import it, or export your configuration for backup purpose).
Encrypted configuration database option available to store connections informations safely (external library supporting AES algorithm used with key sizes of 128, 192 and 256 bits, please refer for the legal status of encryption software in your country).
Standalone executable, no setup required.
Localizable : English (default) and French available (only when using setup version, standalone is english only).
Completely free for commercial and personal use : PuTTY Connection Manager is freeware.

MTU Ping Test

Filed under: Microsoft Windows, Networking — Nasser Heidari @ 9:45 am

MTU Ping Test

A series of ping tests using the command, ping www.expedient.net -f -l xxxx, where xxxx is the packet size, can be used to determine the optimal MTU for your connection.

Go to Start and select Run.
Type in cmd (Windows 2000/XP) or command (Windows 98/ME) into the Open: field. Hit the enter key or click OK. The DOS prompt should open.
At the DOS prompt, type in ping www.expedient.net -f -l 1492 and hit the Enter key.
Note the results above indicate that the packet needs to be fragmented. Lower the size the packet in increments of +/-10 (e.g. 1472, 1462, 1440, 1400) until you have a packet size that does not fragment.
Begin increasing the packet size from this number in small increments until you find the largest size that does not fragment. Add 28 to that number (IP/ICMP headers) to get the optimal MTU setting. For example, if the largest packet size from ping tests is 1462, add 28 to 1462 to get a total of 1490 which is the optimal MTU setting.