Telnet 636 port does not pass

A strange thing happened today, LDAP port 636 suddenly did not pass the error is as follows

[[email protected] ~]$ telnet 10.219.90.173 636
Trying 10.219.90.173 ...
Connected to 10.219.90.173.
Escape character is ' ^] '.
Connection closed by foreign host.

Telnet test with WinDOS error as follows, port connection failed

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Check the firewall, the firewall is off

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The port is also open normally

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Thought for a long time also did not think of what the problem is going to shut down the firewall port to try again

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The magic has come up, the port is through

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Specifically do not know what caused the cause, welcome the Great God Advice

This article is from the "Microsoft Notes" blog, make sure to keep this source http://lishengxian.blog.51cto.com/9081663/1909678

Telnet 636 port does not pass