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7 Ways to Fix Your Telnet

Microsoft Corp. this month issued a megapatch to seal seven unrelated security holes in the way Windows 2000 handles Telnet services.

It is the second time in recent months that Microsoft grouped patches for several vulnerabilities in a single security bulletin. Microsoft released a similar patch fixing a number of holes in Internet Information Services.

Microsoft only says administrators should consider applying the patch. When Microsoft considers a vulnerability especially dangerous, the company flatly recommends that administrators should apply a patch.

Four of the vulnerabilities in Telnet allow denial of service attacks. Two vulnerabilities allow privilege elevation. The other vulnerability could allow information disclosure via Guest accounts exposed through a Telnet server. That vulnerability is related to a similar problem discovered in FTP.

The fixes addressed in the patch will later be included in Windows 2000 Service Pack 3.

<>The patch can be found here.

About the Author

Scott Bekker is editor in chief of Redmond Channel Partner magazine.

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