717.txt

snort入侵检测规则文件2.4 Snort是众所周知的网络入侵检测工具

Rule:

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Sid:
717

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Summary:
This event is generated when a failed remote telnet connection occurs using the root account.

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Impact:
Failed root access.  This event indicates that an attacker tried an failed to connect to a telnet server using the root account.


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Detailed Information:
Telnet servers can be configured to disallow connections using the root account.  If root privileges are required, the root user must log on to the telnet server's console directly.  A failed telnet connection using the root account will generate an error message. 

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Affected Systems:
Telnet servers.

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Attack Scenarios:
An attacker may attempt to log on to a telnet server using the root account.

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Ease of Attack:
Simple

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False Positives:
None known.

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False Negatives:
None known.

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Corrective Action:

Disable root logins using telnet.

Consider using Secure Shell instead of telnet.

Block inbound telnet access if it is not required.

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Contributors:
Original rule written by Ron Gula<[e-mail]>
Documented by Steven Alexander<[e-mail]>
Sourcefire Research Team
Judy Novak <[e-mail]>

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Additional References:

Arachnids:
http://www.whitehats.com/info/IDS365

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