There are many alternatives to Little Snitch for Linux if you are looking for a replacement. The best Linux alternative is Wireshark, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 25 alternatives to Little Snitch and nine of them are available for Linux so hopefully you can find a suitable replacement. Other interesting Linux alternatives to Little Snitch are Portmaster, OpenSnitch, ufw and Firewalld.
Wireshark is a premier network protocol analyzer used globally in industries and education, offering multi-platform support, deep protocol inspection, powerful display filters, and VoIP analysis. It allows both live capture and offline analysis, supporting various networks and protocols.
Free, open-source privacy suite monitoring all network activity, blocking unwanted connections, using trusted filter lists for ads and malware, enforcing DNS-over-TLS, providing custom app and global rules, and supporting advanced privacy management.
GNU/Linux firewall enabling interactive outbound network filtering, outbound application control, blocking of ads and malware domains, centralized GUI node management, input policy configuration, SIEM integration, real-time alerts, and user-level rule customization.
Ufw stands for Uncomplicated Firewall, and is program for managing a netfilter firewall. It provides a command line interface and aims to be uncomplicated and easy to use.
Firewalld provides a dynamically managed firewall with support for network/firewall zones that define the trust level of network connections or interfaces. It has support for IPv4, IPv6 firewall settings, ethernet bridges and IP sets.
Receive notifications whenever a new program connects to the network, or when it's modified
The upribox Software turns your RaspberryPi into a privacy-enhancing Wireless router with adblocking, Tor, and a VPN server.
With InJoy Firewall™ 4.0 you can say good-bye to old-generation Firewall solutions that were difficult to implement, manage and measure — InJoy Firewall™ is different...
United States
Austria
EU
Italy
Australia
It is open source. It seems good even if the last commit was 2 years ago