From the course: Troubleshooting Network Connectivity

Unlock the full course today

Join today to access over 22,600 courses taught by industry experts or purchase this course individually.

Test service connectivity, telnet/wireshark

Test service connectivity, telnet/wireshark

From the course: Troubleshooting Network Connectivity

Start my 1-month free trial

Test service connectivity, telnet/wireshark

- Admins have to duplicate claims from users or customers. But it's not always practical to drop everything, grab a laptop, and head out to test. In these instances, we admins need to test with some remote tools that will help us simulate these services. The vast majority of services I find myself testing will be TCP based HTTP, SMTP, et cetera. To test TCP, I need a TCP based utility. My go to tool on Windows is Telnet. This can be done through the Windows telnet utility or via apps like putty. Telnet can be especially useful for troubleshooting clear text protocols. The majority of HTTP servers will respond when an admin telnets to it via port 80. For this example, I'll telnet to google.com. Telnet, port, 80. Once connected, I type get space forward slash space HTTP forward slash one period one and hit enter twice. You should get some sort of output that indicates you entered a bad request which means that our test was successful. The fact that anything came back shows that we have…

Contents