Usage

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Usage

Command Line Parameters

checktcp hostname | ipaddress port /show /timeout:timeout

hostname / ipaddress	Hostname or IP address to connect to
port	TCP port on host to connect to, only one port can be specified at one time
/show	Displays any data sent by the remote host through the TCP connection. This works with some protocols, such as SMTP or SSH
/timeout:timeout	Override the default timeout of 3 seconds when specifying the /showheader switch.

Examples

Example 1: Check whether port 25 on host smtp.aol.com is open

checktcp smtp.aol.com 25

Example 2: Check whether port 25 on host mail.hotmail.com is open and display data

checktcp mail.hotmail.com 25 /show

Sample Output

c:\>checktcp mail.hotmail.com 25 /show

-------------------------------------------------------------

CheckTCP V1.0 by NETIKUS.NET [ compiled on May 9 2004 ]

(support@netikus.net)

-------------------------------------------------------------

Command-line utility to check whether a TCP port is open.

Status: mail.hotmail.com:25 is open

Data: 220 mc9-f37.hotmail.com Microsoft ESMTP MAIL Service, Version: 5.0.2195.6824 ready at Sun, 9 May 2004 19:11:01 -0700