How to Install and Uninstall fwknop-server Package on Ubuntu 21.04 (Hirsute Hippo)

Last updated: May 10,2024

1. Install "fwknop-server" package

In this section, we are going to explain the necessary steps to install fwknop-server on Ubuntu 21.04 (Hirsute Hippo)


    
        
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                sudo apt update
            
                    
    
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                sudo apt install
            
                        
                fwknop-server
            
                    
    
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2. Uninstall "fwknop-server" package

Here is a brief guide to show you how to uninstall fwknop-server on Ubuntu 21.04 (Hirsute Hippo):


    
        
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                sudo apt remove
            
                        
                fwknop-server
            
                    
    
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                sudo apt autoclean && sudo apt autoremove
            
                    
    
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3. Information about the fwknop-server package on Ubuntu 21.04 (Hirsute Hippo)

Package: fwknop-server
Architecture: amd64
Version: 2.6.10-12
Priority: optional
Section: universe/admin
Source: fwknop
Origin: Ubuntu
Maintainer: Ubuntu Developers
Original-Maintainer: Francois Marier
Bugs: https://bugs.launchpad.net/ubuntu/+filebug
Installed-Size: 246
Pre-Depends: init-system-helpers (>= 1.54~)
Depends: iptables, libfko3 (= 2.6.10-12), lsb-base (>= 3.0-6), libc6 (>= 2.15), libpcap0.8 (>= 0.9.8)
Suggests: fwknop-apparmor-profile
Filename: pool/universe/f/fwknop/fwknop-server_2.6.10-12_amd64.deb
Size: 84268
MD5sum: bde6db83a00b19583e0ad7b6542d92de
SHA1: f32dfb70f4fa2cb4458993d672da1bb94a3566aa
SHA256: 9f8d49afb63b6b5f5e96fded8cc7199fc07b7b949389e3b532660bcca892de66
SHA512: b9be22f40e6a4a26d1cacc7f483023a114250ae03c4f19cf2b1db6351bc63c7a4510b89e435e6c8ff73c525239ded8e15a8ac4fba909e5371512abec99269514
Homepage: https://www.cipherdyne.com/fwknop/
Description-en: FireWall KNock OPerator server side - C version
The FireWall KNock OPerator implements an authorization scheme called
Single Packet Authorization (SPA), based on Netfilter and libpcap.
.
Its main application is to protect services such as OpenSSH with
an additional layer of security in order to make the exploitation of
vulnerabilities (both 0-day and unpatched code) much more difficult.
.
The authorization server passively listens for authorization packets via
libpcap, thus preventing any connections from being processed on the
traditional port. Access to a protected service is only granted after a
valid encrypted and non-replayed packet is detected.
Description-md5: c694b7b8c77e0124be3c4eafe1bebec8