VOIP Codec
What codec should I use ? PCMU (G711u) is used by default. Both PCMU and PCMA will give you […]
Rclone
There are several ways to encrypt your data before you send it to the cloud, but if you simply […]
Cisco PBX UC500 config
New Extension number creation voice register dn To enter voice register dn configuration mode to define an extension […]
Ubiquiti – use Centos as Unifi controller
1. Install controller Prerequisite: To install the UniFi controller, we need to install mongodb, Java JDK, unzip, wget first. […]
monitor Esxi with Nagios
sudo yum install epel-release sudo yum install python-pip Problem: Cannot uninstall ‘PyYAML’. It is a distutils installed project and […]
Install Openmanage on VMware Esxi
This article describes the installation process of OpenManage Server Administrator VIB (OMSA) on VMware ESXi 5.x and/or VMware ESXi 6.x. […]
Unison File Synchronizer (network or local)
Installation Options The Makefile in the distribution includes several switches that can be used to control how Unison is built. Here are […]
Wireshark packet analyse – Layer by Layer
Recall the HEx Before analyse the packet in the wireshark, we must pick the skill set – hex number. 1 […]
TCPdump
Export to a file tcpdump -i <interface> -s 65535 -w name.pcap -n: will suppress name resolution of IPs, […]
AWS cli -S3
S3 Log on the AWS console, go to Users > Security credentials create an access key ID and Secret Access […]