Lets say you upgraded your home or office network with new wifi routers and devices then you should see if your devices are using the new wifi standards like Wifi5 or Wifi6, to ensure high speed data transfer. On Windows it is easy to check, but on linux we need to run a few commands… Read More »
On a linux system you can get details about the wifi adapter using commands like iw, iwconfig, iwlist, ethtool etc. However if you are a usb wifi adapter then it can be tricky. When you plug a usb wifi adapter on your system, linux will not show the details of the device in the lspci… Read More »
In this article we take a quick look at testing wifi throughput over lan using a simple tool called iperf. Wifi lan speed matters when you are transferring large files across devices. For example transferring a big video or zip file from ipad or smartphone to desktop pc connected on ethernet. Wifi speed is not… Read More »
Many applications do not directly support the use of socks proxy. It is not possible to configure them in anyway to use a proxy server. Torsocks enables such applications to use the Tor Socks proxy. It automatically routes all network requests made by a certain application through the Tor proxy. The manual page defines Torsocks… Read More »
Wired Network Lets say you have an existing wired network setup at your workstation or home somewhat like this Adsl Modem/Router (192.168.1.1) => Switch => Multiple Pcs (192.168.1.10, 192.168.1.20 …) Now you want to add a wireless access point to this existing wired network so that you can connect to the internet wirelessly from your… Read More »
Tcpdump Tcpdump is a commandline network analyzer tool or more technically a packet sniffer. It can be thought of as the commandline version of wireshark (only to a certain extent, since wireshark is much more powerful and capable). As a commandline tool tcpdump is quite powerful for network analysis as filter expressions can be passed… Read More »
The standard telnet utilities that are present in linux or windows can connect to services running on TCP ports. They do not support udp ports. However the utility netcat can be used to connect and work with udp ports in the same way as the telnet command. The telnet command can connect to a host… Read More »
The speed of your internet browsing depends on the dns servers to a certain extent. Whenever a url is opened in the browser, the browser has to first perform a dns request to get the ip address of that particular url’s domain name. For example www.google.com. It is only after the ip address is found,… Read More »
Port Forwarding Port forwarding is a configuration in the router of a LAN such that any connections to a specific port number on the public/wan ip of the router may be forwarded to a specific machine/ip inside the LAN. Most routers have configuration options to enable port forwarding. Testing Port Forwarding After setting up port… Read More »
PHP Handlers PHP handlers are a link between a webserver(say Apache) and the PHP libraries. PHP handlers enable a webserver to load the PHP library in a certain manner and execute the PHP code and return the output to the webserver. There are many different kind of PHP handler setups available. Each has its own… Read More »