709.txt

来自「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」· 文本 代码 · 共 65 行

Rule:

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Sid:
709

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Summary:
This event is generated after an attempted login to a telnet server 
using the username 4Dgifts.

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Impact:
Unauthorized remote access.

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Detailed Information:
This event is generated when an attempt is made to login to a server
using the username 4Dgifts via Telnet. This is a default account on some
SGI based machines. The password may also be 4Dgifts or it may not have
a password assigned.

Repeated events from this rule may indicate a determined effort to guess
the password for this account.

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Affected Systems:
	SGI Telnet servers.

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Attack Scenarios:
An attacker may attempt to connect to a telnet server using the username
4Dgifts.

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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 the 4Dgifts account.

Use ssh as an alternative to Telnet

Block inbound telnet access if it is not required.

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Contributors:
Original Rule Writer Unknown
Sourcefire Research Team
Nigel Houghton <[e-mail]>

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Additional References:

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