Networking – Page 3

Use Openssl as CA to create Key and certificate

Introduction OpenSSL is a free and open-source cryptographic library that provides several command-line tools for handling digital certificates. Some of […]

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Proxy ARP

How Does Proxy ARP Work? This is an example of how proxy ARP works: Network Diagram The Host A […]

Configure Guest WLAN with captive portal on Motorola WiNG 5.8

Networking preparation The topology for this project is this: We chose VX9000 as the wireless controller and mode 71xx […]

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Sign a Certificate in Microsoft windows server

we can generate a certificate Signing Request (CSR) from Linux in following steps: 1, The first step is to generate a […]

Graylog 2

Prerequisite We need to install following softwares: One Ubuntu 16.04 server with at least 2 GB of RAM, private networking […]

URL needs to be blocked

1. Porn web sites 2. Malware This website maintains the url regularly. http://someonewhocares.org/hosts/zero/

Nagios Addons ( Check_mk, pnp4Nagios, Nagvis )

Nagios 4 (core) + Check_mk + pnp4Nagios + Nagvis

Nagios User

A sample CGI configuration file (/usr/local/nagios/etc/cgi.cfg) is installed by default. If you still have some permission issue: 1. edit […]

SPF record

What is SPF record An SPF record is a type of Domain Name Service (DNS) record that identifies which mail […]

Java connection issue for port less than 1024

Bind the port 80 to Java: Since running as graylog ( Java software) user can’t open ports < 1024, we […]