Linux – Page 11 – POFTUT

Introduction To Scapy Network Packet Generator

Scapy is a tool for network protocol, package generation and manipulation and showing them in a visual way with graphics and 3D images. There are tools equivalent like hping3 but scapy is very flexible against it. Scapy can manipulate all data of general protocols like IP, Ethernet, tcp, udp etc. If you have a network … Read more

How To Find External or Wan IP Address Without Browser?

Sometimes I need external IP address of system I am logged on. The general solution is to use browser and search for “what is my address” . And magically google shows the external IP. But if you have no chance to use browser or especially GUI there must be an alternative for this. Here is  … Read more

Install Dnsmasq As Cache Dns Server

We have a lot of computer in our network. Our network speed is not too much. Sometimes especially in mornings our internet connection slows down. How can solve this with some dns related tricks? Dns is one of the mostly used network protocol. It can effect the internet speed. Making some optimizations will develop your … Read more

How To Start, Stop, Restart Networking On Linux?

I have changed my network configuration and want to restart to make changes effective. Or there are some problems with my network and I think restarting it will solve my problems. Here we will look at how to restart networking service in various network distributions like Ubuntu, Debian, Fedora, CentOS. Get Status Of Network Service … Read more

How To Delete Route In Ubuntu Linux?

I have some route in my routing table. But I want to delete one route from routing table. How can accomplish this? List Existing Routes To get detailed information about route that will be removed we list the existing routes in our system. $ sudo ip route show default via 192.168.122.1 dev ens3 10.0.3.0/24 dev … Read more

How To Add or Change Default Route or Default Gateway in Ubuntu, Linux?

Systems connected to the network will generally access to the internet. In order to access to the internet they need some network configuration like gateway or default gateway. In this tutorial we will examine how to add or change default gateway in Ubuntu, Debian, CentOS, Fedora, Mint, Kali operating systems. List Routing Table Routing table … Read more

How To Add New Route In Ubuntu, Linux?

I have a box with Ubuntu Linux and I want to add a new route to my box. Because I want to access an external network from a different interface and network. How can I add a new route to my Ubuntu, Debian, Fedora, Cent-OS Linux box? Because ip-tools is the same for all of … Read more

Linux SCP Command Usage With Examples

Linux SCP Command Usage With Examples

Scp is an acronym for Secure Copy. It is used primarily for copying files over an ssh connection. The copied files are encrypted and assumed secure as ssh. If the files contain sensitive data copying them with SCP or similar encrypted protocol is the best solution. In this tutorial, we will look at how to … Read more

Grep and Filter IP Address In Linux

Searching IP address in a text file or a console output may become cumbersome. This little command named grep will help you in this way. Example Data We have a file or output which includes the IP address and we want to extract just IP addresses nothing other. This file is created with a nmap … Read more