How To Install ufw on CentOS 8

ufw is Uncomplicated Firewall

Introduction

In this tutorial we learn how to install ufw on CentOS 8.

What is `ufw`

The Uncomplicated Firewall(ufw) is a front-end for netfilter, which aims to make it easier for people unfamiliar with firewall concepts. Ufw provides a framework for managing netfilter as well as manipulating the firewall.

We can use yum or dnf to install ufw on CentOS 8. In this tutorial we discuss both methods but you only need to choose one of method to install ufw.

Install ufw 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 ufw using dnf by running the following command:

sudo dnf -y install ufw

Install ufw 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 ufw using yum by running the following command:

sudo yum -y install ufw

How To Uninstall ufw on CentOS 8

To uninstall only the ufw package we can use the following command:

sudo dnf remove ufw

ufw Package Contents on CentOS 8

/etc/default/ufw
/etc/ufw
/etc/ufw/after.init
/etc/ufw/after.rules
/etc/ufw/after6.rules
/etc/ufw/applications.d
/etc/ufw/applications.d/fedora-icecream
/etc/ufw/applications.d/fedora-kdeconnect
/etc/ufw/applications.d/fedora-multicast
/etc/ufw/applications.d/ufw-bittorent
/etc/ufw/applications.d/ufw-chat
/etc/ufw/applications.d/ufw-directoryserver
/etc/ufw/applications.d/ufw-dnsserver
/etc/ufw/applications.d/ufw-fileserver
/etc/ufw/applications.d/ufw-loginserver
/etc/ufw/applications.d/ufw-mailserver
/etc/ufw/applications.d/ufw-printserver
/etc/ufw/applications.d/ufw-proxyserver
/etc/ufw/applications.d/ufw-webserver
/etc/ufw/before.init
/etc/ufw/before.rules
/etc/ufw/before6.rules
/etc/ufw/sysctl.conf
/etc/ufw/ufw.conf
/usr/lib/python3.6/site-packages/ufw
/usr/lib/python3.6/site-packages/ufw-0.35-py3.6.egg-info
/usr/lib/python3.6/site-packages/ufw/__init__.py
/usr/lib/python3.6/site-packages/ufw/__pycache__
/usr/lib/python3.6/site-packages/ufw/__pycache__/__init__.cpython-36.opt-1.pyc
/usr/lib/python3.6/site-packages/ufw/__pycache__/__init__.cpython-36.pyc
/usr/lib/python3.6/site-packages/ufw/__pycache__/applications.cpython-36.opt-1.pyc
/usr/lib/python3.6/site-packages/ufw/__pycache__/applications.cpython-36.pyc
/usr/lib/python3.6/site-packages/ufw/__pycache__/backend.cpython-36.opt-1.pyc
/usr/lib/python3.6/site-packages/ufw/__pycache__/backend.cpython-36.pyc
/usr/lib/python3.6/site-packages/ufw/__pycache__/backend_iptables.cpython-36.opt-1.pyc
/usr/lib/python3.6/site-packages/ufw/__pycache__/backend_iptables.cpython-36.pyc
/usr/lib/python3.6/site-packages/ufw/__pycache__/common.cpython-36.opt-1.pyc
/usr/lib/python3.6/site-packages/ufw/__pycache__/common.cpython-36.pyc
/usr/lib/python3.6/site-packages/ufw/__pycache__/frontend.cpython-36.opt-1.pyc
/usr/lib/python3.6/site-packages/ufw/__pycache__/frontend.cpython-36.pyc
/usr/lib/python3.6/site-packages/ufw/__pycache__/parser.cpython-36.opt-1.pyc
/usr/lib/python3.6/site-packages/ufw/__pycache__/parser.cpython-36.pyc
/usr/lib/python3.6/site-packages/ufw/__pycache__/util.cpython-36.opt-1.pyc
/usr/lib/python3.6/site-packages/ufw/__pycache__/util.cpython-36.pyc
/usr/lib/python3.6/site-packages/ufw/applications.py
/usr/lib/python3.6/site-packages/ufw/backend.py
/usr/lib/python3.6/site-packages/ufw/backend_iptables.py
/usr/lib/python3.6/site-packages/ufw/common.py
/usr/lib/python3.6/site-packages/ufw/frontend.py
/usr/lib/python3.6/site-packages/ufw/parser.py
/usr/lib/python3.6/site-packages/ufw/util.py
/usr/lib/systemd/system/ufw.service
/usr/libexec/ufw
/usr/libexec/ufw/ufw-init
/usr/libexec/ufw/ufw-init-functions
/usr/sbin/ufw
/usr/share/doc/ufw
/usr/share/doc/ufw/AUTHORS
/usr/share/doc/ufw/ChangeLog
/usr/share/doc/ufw/README
/usr/share/doc/ufw/TODO
/usr/share/licenses/ufw
/usr/share/licenses/ufw/COPYING
/usr/share/locale/ar/LC_MESSAGES/ufw.mo
/usr/share/locale/ast/LC_MESSAGES/ufw.mo
/usr/share/locale/bg/LC_MESSAGES/ufw.mo
/usr/share/locale/bs/LC_MESSAGES/ufw.mo
/usr/share/locale/ca/LC_MESSAGES/ufw.mo
/usr/share/locale/ce/LC_MESSAGES/ufw.mo
/usr/share/locale/cs/LC_MESSAGES/ufw.mo
/usr/share/locale/da/LC_MESSAGES/ufw.mo
/usr/share/locale/de/LC_MESSAGES/ufw.mo
/usr/share/locale/el/LC_MESSAGES/ufw.mo
/usr/share/locale/en_AU/LC_MESSAGES/ufw.mo
/usr/share/locale/en_GB/LC_MESSAGES/ufw.mo
/usr/share/locale/es/LC_MESSAGES/ufw.mo
/usr/share/locale/et/LC_MESSAGES/ufw.mo
/usr/share/locale/fi/LC_MESSAGES/ufw.mo
/usr/share/locale/fr/LC_MESSAGES/ufw.mo
/usr/share/locale/he/LC_MESSAGES/ufw.mo
/usr/share/locale/hu/LC_MESSAGES/ufw.mo
/usr/share/locale/id/LC_MESSAGES/ufw.mo
/usr/share/locale/it/LC_MESSAGES/ufw.mo
/usr/share/locale/ja/LC_MESSAGES/ufw.mo
/usr/share/locale/ko/LC_MESSAGES/ufw.mo
/usr/share/locale/lv/LC_MESSAGES/ufw.mo
/usr/share/locale/nb/LC_MESSAGES/ufw.mo
/usr/share/locale/nl/LC_MESSAGES/ufw.mo
/usr/share/locale/pl/LC_MESSAGES/ufw.mo
/usr/share/locale/pt/LC_MESSAGES/ufw.mo
/usr/share/locale/pt_BR/LC_MESSAGES/ufw.mo
/usr/share/locale/ru/LC_MESSAGES/ufw.mo
/usr/share/locale/se/LC_MESSAGES/ufw.mo
/usr/share/locale/sk/LC_MESSAGES/ufw.mo
/usr/share/locale/sl/LC_MESSAGES/ufw.mo
/usr/share/locale/sr/LC_MESSAGES/ufw.mo
/usr/share/locale/sv/LC_MESSAGES/ufw.mo
/usr/share/locale/tl/LC_MESSAGES/ufw.mo
/usr/share/locale/tr/LC_MESSAGES/ufw.mo
/usr/share/locale/uk/LC_MESSAGES/ufw.mo
/usr/share/locale/ur/LC_MESSAGES/ufw.mo
/usr/share/locale/zh_CN/LC_MESSAGES/ufw.mo
/usr/share/locale/zh_TW/LC_MESSAGES/ufw.mo
/usr/share/man/man8/ufw-framework.8.gz
/usr/share/man/man8/ufw.8.gz
/usr/share/ufw
/usr/share/ufw/iptables
/usr/share/ufw/iptables/after.rules
/usr/share/ufw/iptables/after6.rules
/usr/share/ufw/iptables/before.rules
/usr/share/ufw/iptables/before6.rules
/usr/share/ufw/iptables/user.rules
/usr/share/ufw/iptables/user6.rules
/var/lib/ufw
/var/lib/ufw/user.rules
/var/lib/ufw/user6.rules

References

ufw website

Summary

In this tutorial we learn how to install ufw on CentOS 8 using yum and dnf.