How To Install ngrep on CentOS 7
Introduction
In this tutorial we learn how to install ngrep on CentOS 7.
What is ngrep
ngrep strives to provide most of GNU grep’s common features, applying them to the network layer. ngrep is a pcap-aware tool that will allow you to specify extended regular or hexadecimal expressions to match against data payloads of packets. It currently recognizes TCP, UDP, ICMP, IGMP and Raw protocols across Ethernet, PPP, SLIP, FDDI, Token Ring, 802.11 and null interfaces, and understands bpf filter logic in the same fashion as more common packet sniffing tools, such as tcpdump and snoop.
We can use yum or dnf to install ngrep on CentOS 7. In this tutorial we discuss both methods but you only need to choose one of method to install ngrep.
Install ngrep on CentOS 7 Using yum
Update yum database with yum using the following command.
sudo yum makecache
After updating yum database, We can install ngrep using yum by running the following command:
sudo yum -y install ngrep
Install ngrep on CentOS 7 Using dnf
If you don’t have dnf installed you can install DNF on CentOS 7 first.
Update yum database with dnf using the following command.
sudo dnf makecache
After updating yum database, We can install ngrep using dnf by running the following command:
sudo dnf -y install ngrep
How To Uninstall ngrep on CentOS 7
To uninstall only the ngrep package we can use the following command:
sudo dnf remove ngrep
References
Summary
In this tutorial we learn how to install ngrep on CentOS 7 using yum and dnf.
