Password hackers - how do I get their IP addresses so I can block them?
/var/log/secure.log is indicating that people are trying to guess my root password repeatedly. Last week someone tried a dictionary-style attack where just about every userID under the sun was tried over a period of days.
Here's a brief sample of what I'm talking about:
Sep 8 17:44:08 www com.apple.SecurityServer: authinternal failed to authenticate user master.
Sep 8 17:44:08 www com.apple.SecurityServer: Failed to authorize right system.login.tty by process /usr/sbin/sshd for authorization created by /usr/sbin/sshd.
Sep 8 17:44:14 www com.apple.SecurityServer: authinternal failed to authenticate user apache.
Sep 8 17:44:14 www com.apple.SecurityServer: Failed to authorize right system.login.tty by process /usr/sbin/sshd for authorization created by /usr/sbin/sshd.
Sep 8 17:44:19 www com.apple.SecurityServer: authinternal failed to authenticate user root.
Sep 8 17:44:19 www com.apple.SecurityServer: Failed to authorize right system.login.tty by process /usr/sbin/sshd for authorization created by /usr/sbin/sshd.
Sep 8 17:44:24 www com.apple.SecurityServer: authinternal failed to authenticate user root.
Sep 8 17:44:24 www com.apple.SecurityServer: Failed to authorize right system.login.tty by process /usr/sbin/sshd for authorization created by /usr/sbin/sshd.
Sep 8 17:44:30 www com.apple.SecurityServer: authinternal failed to authenticate user network.
Sep 8 17:44:30 www com.apple.SecurityServer: Failed to authorize right system.login.tty by process /usr/sbin/sshd for authorization created by /usr/sbin/sshd.
Sep 8 17:44:35 www com.apple.SecurityServer: authinternal failed to authenticate user word.
Sep 8 17:44:35 www com.apple.SecurityServer: Failed to authorize right system.login.tty by process /usr/sbin/sshd for authorization created by /usr/sbin/sshd.
Sep 8 17:44:41 www com.apple.SecurityServer: authinternal failed to authenticate user root.
Sep 8 17:44:41 www com.apple.SecurityServer: Failed to authorize right system.login.tty by process /usr/sbin/sshd for authorization created by /usr/sbin/sshd.
Here's my question:
Shutting off SSH isn't an option for me. I'd like to learn the IP address of the person(s) trying to break in so I can blackhole them (use /sbin/routed to route their IP to 127.0.0.1). The log, unfortunately, isn't showing me their IP address. Is this something I can "turn on" via a configuration option, or is it being logged somewhere else I don't know about?
Mac Mini Mac OS X (10.4)
A storng password would be almost unguessable, and uncrackable using a dictionary program. A password that is not strong is something like your wife's maiden name or your birthday as someone might pick that from your online information.
To get an idea of what a strong password looks like, click on the Change Password button in accounts preferences and then the key symbol next to the "new" password box.
With sliders and different types of passwords, you can create a strong password easily. (Of course you will need to write it down, but lock the paper away).
Some people think that all accounts need goood passwords; but certainly Admin needs one as that could allow access to all the family jewels.
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