more_ufw_commands_and_examples
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| ====== More UFW Commands and Examples ====== | ====== More UFW Commands and Examples ====== | ||
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| - | + | Most of this information was acquired from // | |
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| + | Having setup a basic firewall (I say basic, but it's also very effective) there might be a need to create some more complex configurations, | ||
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| Let’s look at the simple syntax first. Say, for example, you want to allow traffic on port 22 (SSH). To do this with UFW, you’d run a command like: | Let’s look at the simple syntax first. Say, for example, you want to allow traffic on port 22 (SSH). To do this with UFW, you’d run a command like: | ||
| - | sudo ufw allow 22 | + | \\ |
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| NOTE: I added sudo to the command because you must have admin privileges to run ufw. If you’re using a distribution that doesn’t take advantage of sudo, you’d first have to su to root and then run the same command (minus sudo). | NOTE: I added sudo to the command because you must have admin privileges to run ufw. If you’re using a distribution that doesn’t take advantage of sudo, you’d first have to su to root and then run the same command (minus sudo). | ||
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| Conversely, say you want to prevent traffic on port 22. To do this, the command would look like: | Conversely, say you want to prevent traffic on port 22. To do this, the command would look like: | ||
| - | sudo ufw deny 22 | + | \\ |
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| Should you want to add a protocol to this, the command would look like: | Should you want to add a protocol to this, the command would look like: | ||
| - | sudo ufw deny 22/tcp | + | \\ |
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| What happens if you don’t happen to know the port number for a service? The developers have taken that into consideration. UFW will run against / | What happens if you don’t happen to know the port number for a service? The developers have taken that into consideration. UFW will run against / | ||
| - | sudo ufw allow ssh | + | \\ |
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| Pretty simple, right? You can also add protocols to the above command, in the same way you did when defining a rule via port number. | Pretty simple, right? You can also add protocols to the above command, in the same way you did when defining a rule via port number. | ||
| - | sudo ufw allow ssh/tcp | + | \\ |
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