Month: September 2012

Tweet Reference firewall rules for well-known Apps.   KaKaoTalk Free call and video Outgoing ports(To the destination) – Signaling : Destination IP(Network) – 110.76.141.x, 23.78.190.13…

Tweet Phone spec.; Android a855(old), no 3G, but ONLY wi-fi.   1. Call settings 1-1. Allow 3G/4G Calling ; Unchecked 1-2. Accept calls on answer…

1. CHECK_NRPE: Socket timeout after 10 seconds. ; NRPE stands for ‘Nagios Remote Plugin Executor’. Basically, Opsview cannot communication with agent. Solution> Verify Opsview-agent s/w…

How to add a sensor from custom SNMP library? Simple steps below   Before adding a custom SNMP OID, you need to import or upload…

Here is a simple why of how to import vendor SNMP MIB info to current Network Management System(NMS). In this case, PRTG. First, download free…

First, download free WMI tester from here And few things to check…. – Check WMI is installed. Type "wbemtest" from DOS prompt from both PC….

Tweet How you handle user FTP traffic? as you know there are two transfer modes, passive and active, for FTP traffic. – Active mode :…