Introduction
In this tutorial we learn how to install arpwatch on CentOS 8.
What is arpwatch
The arpwatch package contains arpwatch and arpsnmp. Arpwatch and arpsnmp are both network monitoring tools. Both utilities monitor Ethernet or FDDI network traffic and build databases of Ethernet/IP address pairs, and can report certain changes via email. Install the arpwatch package if you need networking monitoring devices which will automatically keep track of the IP addresses on your network.
We can use yum or dnf to install arpwatch on CentOS 8. In this tutorial we discuss both methods but you only need to choose one of method to install arpwatch.
Install arpwatch on CentOS 8 Using dnf
Update yum database with dnf using the following command.
sudo dnf makecache --refresh
The output should look something like this:
CentOS Linux 8 - AppStream 43 kB/s | 4.3 kB 00:00
CentOS Linux 8 - BaseOS 65 kB/s | 3.9 kB 00:00
CentOS Linux 8 - ContinuousRelease 43 kB/s | 3.0 kB 00:00
CentOS Linux 8 - Extras 23 kB/s | 1.5 kB 00:00
CentOS Linux 8 - FastTrack 40 kB/s | 3.0 kB 00:00
CentOS Linux 8 - HighAvailability 36 kB/s | 3.9 kB 00:00
CentOS Linux 8 - Plus 24 kB/s | 1.5 kB 00:00
CentOS Linux 8 - PowerTools 50 kB/s | 4.3 kB 00:00
Extra Packages for Enterprise Linux Modular 8 - x86_64 13 kB/s | 9.2 kB 00:00
Extra Packages for Enterprise Linux 8 - x86_64 24 kB/s | 8.5 kB 00:00
Metadata cache created.
After updating yum database, We can install arpwatch using dnf by running the following command:
sudo dnf -y install arpwatch
Install arpwatch on CentOS 8 Using yum
Update yum database with yum using the following command.
sudo yum makecache --refresh
The output should look something like this:
CentOS Linux 8 - AppStream 43 kB/s | 4.3 kB 00:00
CentOS Linux 8 - BaseOS 65 kB/s | 3.9 kB 00:00
CentOS Linux 8 - ContinuousRelease 43 kB/s | 3.0 kB 00:00
CentOS Linux 8 - Extras 23 kB/s | 1.5 kB 00:00
CentOS Linux 8 - FastTrack 40 kB/s | 3.0 kB 00:00
CentOS Linux 8 - HighAvailability 36 kB/s | 3.9 kB 00:00
CentOS Linux 8 - Plus 24 kB/s | 1.5 kB 00:00
CentOS Linux 8 - PowerTools 50 kB/s | 4.3 kB 00:00
Extra Packages for Enterprise Linux Modular 8 - x86_64 13 kB/s | 9.2 kB 00:00
Extra Packages for Enterprise Linux 8 - x86_64 24 kB/s | 8.5 kB 00:00
Metadata cache created.
After updating yum database, We can install arpwatch using yum by running the following command:
sudo yum -y install arpwatch
How To Uninstall arpwatch on CentOS 8
To uninstall only the arpwatch package we can use the following command:
sudo dnf remove arpwatch
arpwatch Package Contents on CentOS 8
/usr/lib/.build-id
/usr/lib/.build-id/1b
/usr/lib/.build-id/1b/e58b0142c49457e0b989288f32472d5a8fb7aa
/usr/lib/.build-id/f8
/usr/lib/.build-id/f8/65f10ad09c087f80b39ac2b81797078c8228ee
/usr/lib/systemd/system/arpwatch.service
/usr/sbin/arp2ethers
/usr/sbin/arpsnmp
/usr/sbin/arpwatch
/usr/sbin/massagevendor
/usr/share/doc/arpwatch
/usr/share/doc/arpwatch/CHANGES
/usr/share/doc/arpwatch/README
/usr/share/doc/arpwatch/arpfetch
/usr/share/man/man8/arp2ethers.8.gz
/usr/share/man/man8/arpsnmp.8.gz
/usr/share/man/man8/arpwatch.8.gz
/usr/share/man/man8/massagevendor.8.gz
/var/lib/arpwatch
/var/lib/arpwatch/arp.dat
/var/lib/arpwatch/arp.dat-
/var/lib/arpwatch/arp.dat.new
/var/lib/arpwatch/ethercodes.dat
References
Summary
In this tutorial we learn how to install arpwatch on CentOS 8 using yum and dnf.
