|
Size: 1036
Comment:
|
← Revision 15 as of 2023-04-08 13:25:45 ⇥
Size: 1222
Comment:
|
| Deletions are marked like this. | Additions are marked like this. |
| Line 1: | Line 1: |
| ## page was renamed from UFW = UFW = |
= Ufw = |
| Line 4: | Line 3: |
| '''Uncomplicated Firewall''' ('''UFW''') is a simple-to-use but powerful firewall management software. It is a wrapper around '''iptables''', automatically writing rules for it. | '''`ufw(8)`''' ('''U'''ncomplicated '''F'''ire'''w'''all) is a firewall management program. It is a wrapper around `iptables(8)`. <<TableOfContents>> ---- |
| Line 7: | Line 10: |
| == Basic Setup == | |
| Line 9: | Line 11: |
| This is more than sufficient for servers that are not meant to be web-facing. | == Installation == Several [[Linux]] distributions offer a `ufw` package. Then [[Linux/Systemd|start and enable]] ufw.service. ---- == Configuration == A basic rule set is: |
| Line 12: | Line 24: |
| ufw allow outgoing all ufw deny incoming all ufw allow ssh |
ufw default deny incoming ufw default allow outgoing |
| Line 19: | Line 29: |
| If using custom ports, adjust as needed. This would be set in `/etc/ssh/sshd_config`. | `ufw(8)` is distributed with '''app profiles''' that simplify the configuration process. Instead of allowing ''ports'', consider allowing ''apps''. {{{ ufw allow ssh }}} |
| Line 22: | Line 36: |
| == HTTP == | |
| Line 24: | Line 37: |
| Regardless of `httpd` flavor (Apache, NGINX, lighttpd, etc), this basic configuration should suffice. | === Web Servers === The following rules should allow any web server to operate. |
| Line 28: | Line 43: |
| ufw allow 80 | |
| Line 30: | Line 44: |
| ufw allow 443 | |
| Line 33: | Line 46: |
| If using custom ports, adjust as needed. | Additional steps may be required if using [[Encryption/Certbot|certbot]] on a custom port. |
| Line 36: | Line 49: |
| == FTP == | |
| Line 38: | Line 50: |
| There are standard unencrypted FTP ports: | === FTP === |
| Line 43: | Line 55: |
| ufw allow 989/tcp ufw allow 990/tcp |
|
| Line 45: | Line 59: |
| For security, encrypted FTP uses a pool of ports. This is the recommended setup for `vsftpd`: | Passive configuration also utilizes a pool of ports. Recommended to use custom ports, so adjust as needed. |
| Line 48: | Line 62: |
| ufw allow 990/tcp | |
| Line 51: | Line 64: |
---- == See also == [[https://man.archlinux.org/man/ufw.8|ufw(8)]] |
Ufw
ufw(8) (Uncomplicated Firewall) is a firewall management program. It is a wrapper around iptables(8).
Contents
Installation
Several Linux distributions offer a ufw package. Then start and enable ufw.service.
Configuration
A basic rule set is:
ufw default deny incoming ufw default allow outgoing ufw allow 22
ufw(8) is distributed with app profiles that simplify the configuration process. Instead of allowing ports, consider allowing apps.
ufw allow ssh
Web Servers
The following rules should allow any web server to operate.
ufw allow http ufw allow https
Additional steps may be required if using certbot on a custom port.
FTP
ufw allow 20/tcp ufw allow 21/tcp ufw allow 989/tcp ufw allow 990/tcp
Passive configuration also utilizes a pool of ports. Recommended to use custom ports, so adjust as needed.
ufw allow 40000:42000/tcp