Category Archives: SysAdmin Tools

Default Password List: A – C

Most devices that you can purchase, such as routers, managed switches, servers, even software packages, come pre-configured with a default username and password.  From time to time,  you need to reset the configuration, but lo, you you cannot remember the default password.  Maybe this list will help you find it. This page represents just a portion of the complete data and… Read More »

Default Password List: D – F

The second in the series of default device passwords, this table will show devices that start with D, E, or F. This page represents just a portion of the complete data, and may be stale.  Want a searchable and browsable version of the complete database?  Try the Default Password List tool.

Default Password List: G – K

The third in the series of default device passwords, this table will show devices that start with G, H, I, J, or K. This page represents just a portion of the complete data, and may be stale.  Want a searchable and browsable version of the complete database?  Try the Default Password List tool over on the tools website.

Default Password List: L – N

The fourth in the series of default device passwords, this table will show devices that start with L, M, or N. This page represents just a portion of the complete data and may be stale.  Want a searchable and browsable version of the complete database?  Try the Default Password List tool over on the tools website.

Default Password List: O – R

The second in the series of default device passwords, this table will show devices that start with O-R. This page represents just a portion of the complete data and may be stale.  Want a searchable and browsable version of the complete database?  Try the Default Password List tool over on the tools website.

Telnet to Port 25 to Test SMTP Communication

This article describes how to telnet to port 25 on a computer that runs Simple Mail Transfer Protocol (SMTP) services to troubleshoot SMTP communication problems. The information in this article, including error messages, only applies to issues when attempting to resolve SMTP communication issues with Microsoft Exchange-based servers and is not intended for general troubleshooting purposes.