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2009/7/30 Vagner Rodrigues <vagner@×××××××××××.org>: |
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> Hi Folks ! |
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> Somebody know how I to so send mail with IP and Date/time when same |
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> user login on shell ( remote or local ) ? |
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> I work with another admin's and I never told me when they access and |
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> for what my server to do something, I try log but this can be erased |
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> and maybe mail can help me about access and with this I can Ask about |
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> this access. |
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> -- |
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> Esta mensagem foi verificada pelo sistema de antivírus e |
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> acredita-se estar livre de perigo. |
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Well, all questions regarding the reasons you'd be giving root privs |
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to someone you don't entirely trust aside... the quick and dirty |
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approach I can think of would be to modify the system wide |
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/etc/profile to check uid and send an email if a given uid is logged |
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in. In the end, there's little to no way I'm aware of to guarantee |
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being alerted about use once someone's being handed root privileges. |
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If you do go about setting it up that way... OpenSSH sets variables[1] |
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regarding the session (IP and such) and those can be used to identify |
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that. The `tty` command[2] can be used to tell you whether the access |
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is direct physical access to the system's virtual consoles or not. You |
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could even bypass dependency on the local system having working mail |
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configuration and such if you have an smtp server off-host you can |
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send through by using netcat. A Windows variation[3] I found of the |
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same principle idea does just that. And, lastly, if you use sudo you |
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can leverage its own auditing capabilities to know when it's being |
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used[4]. |
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[1] For example: |
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SSH_CLIENT=127.0.0.1 44681 22 |
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SSH_TTY=/dev/pts/1 |
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SSH_CONNECTION=127.0.0.1 44681 127.0.0.1 22 |
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Which are of the form: |
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SSH_CLIENT=<client ip> <client port> <server port> |
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SSH_TTY=<local tty or pty> |
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SSH_CONNECTION=<client ip> <client port> <server ip> <server port> |
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[2] http://swoolley.org/man.cgi/tty |
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[3] http://community.spiceworks.com/how_to/show/225 |
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[4] http://www.cyberciti.biz/faq/sudo-send-e-mail-sudo-log-file/ |
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-- |
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Poison [BLX] |
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Joshua M. Murphy |
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"Real programmers can write assembly code in any language." - Larry Wall |
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