[Nagiosplug-devel] [ nagiosplug-Bugs-2555782 ] check_imap fails with SSL3

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Sun Feb 1 17:48:27 CET 2009


Bugs item #2555782, was opened at 2009-02-01 17:48
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Category: General plugin execution
Group: None
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Jan Wagner (cyco_dd)
Assigned to: Nobody/Anonymous (nobody)
Summary: check_imap fails with SSL3

Initial Comment:
The following Bugreport we got against the ubuntu package:

imaps service on an Gutsy Server fails with CRITICAL - Cannot make SSL connection
Checking imaps on a Debian Sarge still works.

Both running courier-imap-ssl with SSL3
Verbose Output

Using service IMAP
Port: 143
flags: 0x7
CRITICAL - Cannot make SSL connection
26820:error:140770FC:SSL routines:SSL23_GET_SERVER_HELLO:unknown protocol:s23_clnt.c:567:

and later ...

The imap-server expect a ssl-connect SSLv3 (TLS_PROTOCOL=SSL3) and the check_imap try to connect with SSLv2.

After changing the imap-server to SSLv2, everything works fine with nagios, but the most clients cannot connect due to recommended security-settings (no SSLv2-use) anymore.

Best way would be a new parameter to select the protocol-version (SSLv2, SSLv3, TLSv1).

You can track the bug at https://bugs.launchpad.net/ubuntu/+source/nagios-plugins/+bug/155699

Thanks, Jan.

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