Ping a port

Well, sometimes we need to know whether the port in open or block, we need to do some checking or troubleshoot through ping/telnet. We cannot ping a IP with port but we can telnet certain IP together with Port no.

For example:
Go to open command prompt, if we want to check whether port 21 is working for IP 203.166.87.9 what we need to do is
> telnet 203.166.87.9 21

please tell me it's work. thanks

Ping port

Well, sometimes we need to know whether the port in open or block, we need to do some checking or troubleshoot through ping/telnet. We cannot ping a IP with port but we can telnet certain IP together with Port no.

For example:
Go to open command prompt, if we want to check whether port 21 is working for IP 203.166.87.9 what we need to do is
> telnet 203.166.87.9 21

DllRegisterServer failed with error code 0x80004005 ...

I was trying to register a dll with command prompt in Vista but error message prompt ".. DllRegisterServer failed with error code 0x80004005 ...."



finally i found out that is because of security issue. To solve this,
Go to Start --> All Programs --> Accessories, right-click Command Prompt, and then click Run as Administrator

Then use regsvr32 to register the DLL.

It's work.