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Network Security Security-Basics
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Re: Leaving a door open?

Subject: Re: Leaving a door open?
Date: Fri, 27 May 2005 13:31:19 -0300
Emmanuel,
I've used this in the past and I consider it secure (much more than
leaving FTP open), as long as you keep up to date with your SSH
server, use SSH2 and have a strong password (I'd recommend
certificates if you access your computer from the same clients). SSH
gives you the ability tu tunnel other not-so-secure applications like
VNC, so you can actually have full control of your computer from the
outside.
Changing the port could help prevent automated attacks on SSH (you'll
probably get a few login attempts a week), but wouldn't stop a
determined attacker from finding out where your SSH is running (as
simple as running NMAP -v).
Regards,
Diego

On 5/27/05, Emmanuel Goldstein <goldstein101@gmail.com> wrote:
Hi!

My ISP gives me a static Ip and I was thinking about leaving the SSH
port open so I can access my computer from anywhere since i always
have it switched on.

I have a linux box that is integrated in my home Lan, and a router
with firewall capabilities.

Is this secure??? Note that my admin password is really hard to guess,
so im not concerned about bruteforce attacks.

Should I map ports so instead of opening 22 I access through (eg) 'ssh
-p 7623'. That way is not that obvious i have an open ssh port is, it?

Any other security issues i should be concerned about?
Is this a good idea?
Is it better to just set up an ftp server?


Thanks for your help. Cheers. Bye.


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