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forwarding port 22 safe? (alien.top)

submitted 11 months ago by [email protected] to c/[email protected]

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i want to remotely ssh to my home server, and I was wondering if I could just forward port 22 with disabling password login and use pubkey authentication will be safe enough?

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[–] [email protected] 1 points 11 months ago (7 children)

Change your port.

No one's cracking a proper implementation of RSA, but not every implementation is proper. A little obscurity can't hurt.

[–] [email protected] 1 points 11 months ago (6 children)

Just waiting for everyone to come in saying you shouldn’t do this lol. Yes, changing the port is a nice little bonus. It doesn’t any extra security, but it moves you out of the way from the automated bots that scan the internet trying recent 0days. You’ll probably see a reduction of 99% traffic hitting the service and the only logs will be real people.

[–] [email protected] 1 points 11 months ago (5 children)

only logs will be real people.

There are bots that scan for open ports in minutes.

[–] [email protected] 1 points 11 months ago (2 children)

But then it's blatantly obvious and you can behavior block.

[–] [email protected] 1 points 11 months ago

Apparently, the downvoters don't understand IPS.

[–] [email protected] 1 points 11 months ago (1 children)

Which is easily defeated by using one block of ip addresses to gather data and another block for actually trying to exploit found ports. Unless you block the whole AS. If the attacker only uses one system with one ip they probably wouldn’t have the resources to get past ssh anyway.

[–] [email protected] 1 points 11 months ago

Behavior blocking can be done across many IPs.

If you have one IP that scans port 10000, the other port 10001, and thousands of other IPs scanning just 1 port it's still blatantly obvious.

And if they want to scan in a less obvious manner they need to do this spaced by days.

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