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43 lines
970 B
Plaintext
43 lines
970 B
Plaintext
---
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syntax: markdown
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tags: [tldr, linux]
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source: https://github.com/tldr-pages/tldr.git
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---
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# ufw
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> Uncomplicated Firewall.
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> Frontend for `iptables` aiming to make configuration of a firewall easier.
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> More information: <https://wiki.ubuntu.com/UncomplicatedFirewall>.
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- Enable `ufw`:
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`ufw enable`
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- Disable `ufw`:
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`ufw disable`
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- Show `ufw` rules, along with their numbers:
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`ufw status numbered`
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- Allow incoming traffic on port 5432 on this host with a comment identifying the service:
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`ufw allow 5432 comment "{{Service}}"`
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- Allow only TCP traffic from 192.168.0.4 to any address on this host, on port 22:
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`ufw allow proto tcp from 192.168.0.4 to any port 22`
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- Deny traffic on port 80 on this host:
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`ufw deny 80`
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- Deny all UDP traffic to ports in range 8412:8500:
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`ufw deny proto udp from any to any port 8412:8500`
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- Delete a particular rule. The rule number can be retrieved from the `ufw status numbered` command:
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`ufw delete {{rule_number}}`
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