--- Alias: ["UFW"] Tag: ["Server", "Firewall"] Date: 2021-10-04 DocType: "Personal" Hierarchy: "NonRoot" TimeStamp: location: [51.514678599999996, -0.18378583926867909] CollapseMetaTable: Yes --- Parent:: [[Selfhosting]], [[Server Alias]], [[Server Cloud]], [[Server Tools]], [[Server VPN]] --- ^Top   ```button name Save type command action Save current file id Save ``` ^button-UFWSave   # Configuring UFW   ```ad-abstract title: Summary collapse: open Description of basic commands for UFW ```   ```toc style: number ```   ---   ### Installation and activation [[#^Top|TOP]]   UFW should be installed by default in Ubuntu servers. If not, see below.   #### Installation of UFW ```ad-command ~~~bash sudo apt install ufw ~~~ ```   #### Activation of UFW ```ad-command ~~~bash sudo ufw status ~~~ ``` If disabled: ```ad-command ~~~bash sudo ufw enable ~~~ ```   ---   ### Basic commands [[#^Top|TOP]]   #### UFW rules status ```ad-command ~~~bash sudo ufw status ~~~ ``` Commands can be appended: - `verbose`: details incoming/outgoing rules - `numbered`: display rule numbers   #### UFW rule management [[#^Top|TOP]] ##### Allow / Deny ```ad-command ~~~bash sudo ufw allow/deny ~~~ ``` Then: | Type to allow | Syntax |--------------|-------- **IP** | from (ip address/range) **Port** | (portnumber)/(protocol) **Service** | (service name) **Protocol** | proto (protocol name)   ##### Rule priority Certain rules like IP denial need to be put on top of the rule stack as UFW reads rules in order one after another. Insert the following in the command to force insertion: ```ad-command ~~~bash insert 1 (or any place in the pecking order) ~~~ ```   ##### Complex rule syntax Finer rules can be defined with the following syntax. | rule condition | syntax |--------------|-------- **connecting IP** | from (ip or any) **internal IP** | to (ip or any) **protocol** | proto (protocol or any) **port** | port (port or any) **outgoing traffic** | out   ##### Delete a rule ```ad-command ~~~bash sudo ufw delete ~~~ ```   ---   ### Ban List management [[#^Top|TOP]]   #### Ban List Folder ```ad-path /etc/addip4ban/ ```   #### Ban List Script ```ad-code title: addip4ban.sh ~~~bash #!/bin/bash INPUT="/etc/addip4ban/blocked.ip.list" while IFS= read -r block do sudo ufw insert 1 deny from "$block" done < "$INPUT" ~~~ ```   Once written, the script needs to be executed. To prepare: ```ad-command ~~~bash sudo chmod +x /etc/addip4ban/addip4ban.sh ~~~ ```   #### Ban List Document ```ad-code title: blocked.ip.list ~~~bash < ip1 > < ip2/range > < ip3 > ~~~ ```   #### Ban list Update Process Copy/paste the new ban list into `blocked.ip.list` and run: ```ad-command ~~~bash sudo bash /etc/addip4ban/addip4ban.sh ~~~ ```   #### Ban List Tasks - [ ] 🖥 [[Selfhosting]], [[Configuring UFW|Firewall]] Get IP addresses caught by Postfix %%done_del%% 🔁 every week on Saturday 📅 2022-09-03 - [x] 🖥 [[Selfhosting]], [[Configuring UFW|Firewall]] Get IP addresses caught by Postfix %%done_del%% 🔁 every week on Saturday 📅 2022-08-27 ✅ 2022-08-26 - [x] 🖥 [[Selfhosting]], [[Configuring UFW|Firewall]] Get IP addresses caught by Postfix %%done_del%% 🔁 every week on Saturday 📅 2022-08-20 ✅ 2022-08-19 - [x] 🖥 [[Selfhosting]], [[Configuring UFW|Firewall]] Get IP addresses caught by Postfix %%done_del%% 🔁 every week on Saturday 📅 2022-08-13 ✅ 2022-08-12 - [x] 🖥 [[Selfhosting]], [[Configuring UFW|Firewall]] Get IP addresses caught by Postfix 🔁 every week on Saturday 📅 2022-08-06 ✅ 2022-08-05 - [x] 🖥 [[Selfhosting]], [[Configuring UFW|Firewall]] Get IP addresses caught by Postfix 🔁 every week on Saturday 📅 2022-07-30 ✅ 2022-07-29 - [x] 🖥 [[Selfhosting]], [[Configuring UFW|Firewall]] Get IP addresses caught by Postfix 🔁 every week on Saturday 📅 2022-07-23 ✅ 2022-07-22 - [x] 🖥 [[Selfhosting]], [[Configuring UFW|Firewall]] Get IP addresses caught by Postfix 🔁 every week on Saturday 📅 2022-07-16 ✅ 2022-07-15 - [x] 🖥 [[Selfhosting]], [[Configuring UFW|Firewall]] Get IP addresses caught by Postfix 🔁 every week on Saturday 📅 2022-07-09 ✅ 2022-07-08 - [x] 🖥 [[Selfhosting]], [[Configuring UFW|Firewall]] Get IP addresses caught by Postfix 🔁 every week on Saturday 📅 2022-07-02 ✅ 2022-07-03 - [x] 🖥 [[Selfhosting]], [[Configuring UFW|Firewall]] Get IP addresses caught by Postfix 🔁 every week on Saturday 📅 2022-06-25 ✅ 2022-06-24 - [x] 🖥 [[Selfhosting]], [[Configuring UFW|Firewall]] Get IP addresses caught by Postfix 🔁 every week on Saturday 📅 2022-06-18 ✅ 2022-06-20 - [x] 🖥 [[Selfhosting]], [[Configuring UFW|Firewall]] Get IP addresses caught by Postfix 🔁 every week on Saturday 📅 2022-06-11 ✅ 2022-06-14 - [x] 🖥 [[Selfhosting]], [[Configuring UFW|Firewall]] Get IP addresses caught by Postfix 🔁 every week on Saturday 📅 2022-06-04 ✅ 2022-06-04 - [x] [[Selfhosting]], [[Configuring UFW|Firewall]] Get IP addresses caught by Postfix 🔁 every week on Saturday 📅 2022-05-28 ✅ 2022-05-28 - [x] [[Selfhosting]], [[Configuring UFW|Firewall]] Get IP addresses caught by Postfix 🔁 every week on Saturday 📅 2022-05-21 ✅ 2022-05-21 - [x] [[Selfhosting]], [[Configuring UFW|Firewall]] Get IP addresses caught by Postfix 🔁 every week on Saturday 📅 2022-05-14 ✅ 2022-05-14 - [x] [[Selfhosting]], [[Configuring UFW|Firewall]] Get IP addresses caught by Postfix 🔁 every week on Saturday 📅 2022-05-07 ✅ 2022-05-06 - [x] [[Selfhosting]], [[Configuring UFW|Firewall]] Get IP addresses caught by Postfix 🔁 every week on Saturday 📅 2022-04-30 ✅ 2022-05-01 - [x] [[Selfhosting]], [[Configuring UFW|Firewall]] Get IP addresses caught by Postfix 🔁 every week on Saturday 📅 2022-04-23 ✅ 2022-04-22 - [x] [[Selfhosting]], [[Configuring UFW|Firewall]] Get IP addresses caught by Postfix 🔁 every week on Saturday 📅 2022-04-16 ✅ 2022-04-16 - [x] [[Selfhosting]], [[Configuring UFW|Firewall]] Get IP addresses caught by Postfix 🔁 every week on Saturday 📅 2022-04-10 ✅ 2022-04-10 - [x] [[Selfhosting]], [[Configuring UFW|Firewall]] Get IP addresses caught by Postfix 🔁 every week on Saturday 📅 2022-04-02 ✅ 2022-04-02 - [x] [[Selfhosting]], [[Configuring UFW|Firewall]] Get IP addresses caught by Postfix 🔁 every week on Saturday 📅 2022-03-26 ✅ 2022-03-26 - [x] [[Selfhosting]], [[Configuring UFW|Firewall]] Get IP addresses caught by Postfix 🔁 every week on Saturday 📅 2022-03-19 ✅ 2022-03-18 - [ ] 🖥 [[Selfhosting]], [[Configuring UFW|Firewall]]: Update the Blocked IP list 🔁 every month on Saturday 📅 2022-09-03 - [x] 🖥 [[Selfhosting]], [[Configuring UFW|Firewall]]: Update the Blocked IP list 🔁 every month on Saturday 📅 2022-08-27 ✅ 2022-08-26 - [x] 🖥 [[Selfhosting]], [[Configuring UFW|Firewall]]: Update the Blocked IP list 🔁 every month on Saturday 📅 2022-08-20 ✅ 2022-08-19 - [x] 🖥 [[Selfhosting]], [[Configuring UFW|Firewall]]: Update the Blocked IP list 🔁 every month on Saturday 📅 2022-08-13 ✅ 2022-08-12 - [x] 🖥 [[Selfhosting]], [[Configuring UFW|Firewall]]: Update the Blocked IP list 🔁 every month on Saturday 📅 2022-08-06 ✅ 2022-08-05 - [x] 🖥 [[Selfhosting]], [[Configuring UFW|Firewall]]: Update the Blocked IP list 🔁 every month on Saturday 📅 2022-07-30 ✅ 2022-07-29 - [x] 🖥 [[Selfhosting]], [[Configuring UFW|Firewall]]: Update the Blocked IP list 🔁 every month on Saturday 📅 2022-07-23 ✅ 2022-07-22 - [x] 🖥 [[Selfhosting]], [[Configuring UFW|Firewall]]: Update the Blocked IP list 🔁 every month on Saturday 📅 2022-07-16 ✅ 2022-07-15 - [x] 🖥 [[Selfhosting]], [[Configuring UFW|Firewall]]: Update the Blocked IP list 🔁 every month on Saturday 📅 2022-07-09 ✅ 2022-07-08 - [x] 🖥 [[Selfhosting]], [[Configuring UFW|Firewall]]: Update the Blocked IP list 🔁 every month on Saturday 📅 2022-07-02 ✅ 2022-07-03 - [x] 🖥 [[Selfhosting]], [[Configuring UFW|Firewall]]: Update the Blocked IP list 🔁 every month on Saturday 📅 2022-06-25 ✅ 2022-06-24 - [x] 🖥 [[Selfhosting]], [[Configuring UFW|Firewall]]: Update the Blocked IP list 🔁 every month on Saturday 📅 2022-06-18 ✅ 2022-06-20 - [x] 🖥 [[Selfhosting]], [[Configuring UFW|Firewall]]: Update the Blocked IP list 🔁 every month on Saturday 📅 2022-06-11 ✅ 2022-06-14 - [x] 🖥 [[Selfhosting]], [[Configuring UFW|Firewall]]: Update the Blocked IP list 🔁 every month on Saturday 📅 2022-06-04 ✅ 2022-06-04 - [x] [[Selfhosting]], [[Configuring UFW|Firewall]]: Update the Blocked IP list 🔁 every month on Saturday 📅 2022-05-28 ✅ 2022-05-28 - [x] [[Selfhosting]], [[Configuring UFW|Firewall]]: Update the Blocked IP list 🔁 every month on Saturday 📅 2022-05-21 ✅ 2022-05-21 - [x] [[Selfhosting]], [[Configuring UFW|Firewall]]: Update the Blocked IP list 🔁 every month on Saturday 📅 2022-05-14 ✅ 2022-05-14 - [x] [[Selfhosting]], [[Configuring UFW|Firewall]]: Update the Blocked IP list 🔁 every month on Saturday 📅 2022-05-07 ✅ 2022-05-06 - [x] [[Selfhosting]], [[Configuring UFW|Firewall]]: Update the Blocked IP list 🔁 every month on Saturday 📅 2022-04-30 ✅ 2022-05-01 - [x] [[Selfhosting]], [[Configuring UFW|Firewall]]: Update the Blocked IP list 🔁 every month on Saturday 📅 2022-04-23 ✅ 2022-04-22 - [x] [[Selfhosting]], [[Configuring UFW|Firewall]]: Update the Blocked IP list 🔁 every month on Saturday 📅 2022-04-16 ✅ 2022-04-16 - [x] [[Selfhosting]], [[Configuring UFW|Firewall]]: Update the Blocked IP list 🔁 every month on Saturday 📅 2022-04-10 ✅ 2022-04-10 - [x] [[Selfhosting]], [[Configuring UFW|Firewall]]: Update the Blocked IP list 🔁 every month on Saturday 📅 2022-04-02 ✅ 2022-04-02 - [x] [[Selfhosting]], [[Configuring UFW|Firewall]]: Update the Blocked IP list 🔁 every month on Saturday 📅 2022-03-26 ✅ 2022-03-26 - [x] [[Selfhosting]], [[Configuring UFW|Firewall]]: Update the Blocked IP list 🔁 every month on Saturday 📅 2022-03-19 ✅ 2022-03-18 [[#^Top|TOP]]