{"id":951,"date":"2008-09-26T13:54:10","date_gmt":"2008-09-26T11:54:10","guid":{"rendered":"http:\/\/www.corelan.be:8800\/?p=951"},"modified":"2008-09-26T13:54:10","modified_gmt":"2008-09-26T11:54:10","slug":"free-tool-pve-tcp-ping-utility","status":"publish","type":"post","link":"https:\/\/www.corelan.be\/index.php\/2008\/09\/26\/free-tool-pve-tcp-ping-utility\/","title":{"rendered":"Free tool - PVE TCP Ping Utility – v1.0.0.1"},"content":{"rendered":"

I wanted to share a small utility that I wrote a while ago, allowing you to run a non-interactive 'ping' to a tcp port (e.g. from within a script).<\/p>\n

This could for example allow you to bring up a VPN tunnel from a script (by generating traffic to a target host), to determine whether a tcp port is open or not and so on... I'm sure all of you are creative enough to see the wide range of possibilities and applications for this utility.<\/p>\n

The tool is a command-line utility, should run on Windows 32bit and 64bit, and requires .Net framework 2.0.<\/a><\/p>\n

Usage :<\/p>\n

Unzip the file and place the file pvetcpping.exe somewhere on your harddrive, preferable in a folder that is part of your PATH variable (e.g. c:windowssystem32)<\/p>\n

If you run the utility without parameters, this is what you'll get :<\/p>\n

\n
\n
---------------------------------\nPVE TCP Ping Utility\nWritten by Peter Van Eeckhoutte\nhttp:\/\/www.corelan.be:8800<\/span>\nVersion 1.0.0.1\n---------------------------------\n\nUsage :\npvetcpping.exe <host> <port> [<number of pings>]\n\nBoth the <host> and <port> parameters are mandatory.\nThe <number of pings> parameter is<\/span> optional.\nSet this<\/span> parameter to 0 to launch a continuous ping.<\/pre>\n<\/div>\n<\/blockquote>\n
As you can see, there are 3 possible parameters. The target host and target port number are mandatory, the number of pings is optional. If you don't specify a number of pings, then 4 pings will be performed.<\/p>\n
If you run the utility with correct parameters, this is what you should get :<\/p>\n
\n
\n
c:> pvetcpping.exe www.google.com 80\n---------------------------------\nPVE TCP Ping Utility\nWritten by Peter Van Eeckhoutte\nhttp:\/\/www.corelan.be:8800<\/span>\nVersion 1.0.0.1\n---------------------------------\n\n[+] Connecting to tcp port 80 on host www.google.com...\n[+] Number of pings : 4\n[+] Started probing at 20:33:32\n[+] Probing host www.google.com on port tcp\/80 - Connect OK - 84ms.\n[+] Probing host www.google.com on port tcp\/80 - Connect OK - 17ms.\n[+] Probing host www.google.com on port tcp\/80 - Connect OK - 19ms.\n[+] Probing host www.google.com on port tcp\/80 - Connect OK - 18ms.\n\nTCP Ping statistics for<\/span> www.google.com port tcp\/80\nConnects : 4, Success : 4, Failed : 0 (0% loss)\nApproximate round trip times in<\/span> milli-seconds:\nMinimum = 17ms, Maximum = 84ms, Average = 34ms<\/pre>\n<\/div>\n<\/blockquote>\n
Starting from version 1.0.0.1, timestamps are added to the output of the utility<\/p>\n