In the wiki post they mention something called firewall builder, and I also found this Ubuntu firewall management tool ( ), and from what I understand, these seem like something that might be good. Firewall Builder can configure CARP interfaces on BSD. My issue is if I have several Ubuntu firewalls to manage on different servers, and I’m not sure what would be the best option. But maybe I can also help a bit - in my searches I found this wiki post ( ), it has some good info as well as different methods/tools to manage iptables and ufw. and thought maybe someone here can advise. I’m looking for info about iptables frontend/GUI for ufw/firewall management for Ubuntu, etc. Interesting thread, from its time-span to the various (related) issues that were raised. blocks the IP range?Īfter some more reading it seams that packets are dropped as soon as a matching rule is encountered so rules placed in les take precedence. Should I add this last rule in the les to make sure the rule is active, i.e. this last rule get canceled by the ufw command line to allow http access to everyone? A ufw-before-input -m iprange -src-range .255 -j DROP Then I want to block access to the Web server to certain IP range so I added the following rule in the les #/etc/ufw/les: rules in these files are evaluated after any rules added via the ufw commandĭoes this mean rules set in les are over-written by rules set by the ufw command line?įor example I have http access open to everyone by running ufw command line: #/etc/ufw/les: rules in these files are evaluated before any rules added via the ufw command I hope this helps you use ufw to secure your computer. The allow is at the bottom and will be the last command evaluated if it appeared above the deny rules the deny rules would not be evaluated. You can check this by checking ufw status If you do the allow statement before either of the deny statements it will be matched first and the deny will not be evaluated. Sudo ufw deny from 192.168.0.7 to any port 22 Sudo ufw deny from 192.168.0.1 to any port 22 You want to block access to port 22 from 192.168.0.1 and 192.168.0.7 but allow all other 192.168.0.x IPs to have access to port 22 You need to be careful with setting up allow and deny rules that 'intersect' because the first rule matched is applied and the remaining are ignored. (note: you basically match the syntax for the creation of the rule and add 'delete') To get the current status of your UFW rules Sudo ufw allow from 10.0.0.0/24 to any port 22 Sudo ufw deny from 10.0.0.1/24 to any port 22Īdvanced allow example for allowing access from an ip address range 10.120.0.1 - 10.120.0.255 to port 22 In most cases I recommend doing the following immediately:Īdvanced deny example for denying access from an ip address range 10.120.0.1 - 10.120.0.255 for SSH port 22 (important note: UFW is not the firewall. I looked for a current how-to for UFW and when I did not see one I wanted to add one.
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