Which happens first TCP handshake or SSL handshake?

CHECK_NRPE: Error – Could not complete SSL handshake. You may need to cover different scenarios for this to troubleshoot. 1) Check if the particular check is available in client server (For example, check_load, 3ware_check, mail_count etc) 2) Check if xinetd or nrpe stopped running,otherwise try to restart it.

In short, the NRPE SSL handshake error occurs when the NRPE server is having trouble communicating with its Nagios server. Today we saw some tips that our support engineers solved by having Nagios put the server’s IP address in the correct nrpe config file. YOU REDUCE THE PROBABILITY OF A SERVER FAILURE!

There is only one host that does not allow checks, nrpe throws a strong error on the nagios server seeing this in the header. user nrpe Host [4655]: XXX.XXX.XXX.XXX has no right to force you to talk to me! Modified /usr/local/nagios/etc/nrpe.cfg and added XXX.XXX.XXX.XXX and 127.0.0.1 to make sure you allow_hosts.

One factor to consider is 127 that.0.0.Should 4 as it will help you troubleshoot NRPE issues locally. Once your family has made the changes, restart the xinetd service on the remote host (in this example, there may be different ways to distribute your OS): another reason for SSL problems is that NRPE was not compiled and SSL is enabled.

Table of Contents

Could not authenticate message could not be sent mailer error SMTP error could not authenticate?

“SMTP error: can definitely be authenticated” is a common error when users send emails through PHPMailer using SMTP authentication. This error occurs when the application is unable to establish an SMTP connection with the streaming server.

Could not create SSL TLS secure channel the request was aborted could not create SSL TLS secure channel?

Error “The request was aborted: SSL/TLS failed to create a weakened channel.” may occur during an HTTP download request. This error usually overrides firewalls, proxy servers, or DNS flushes blocking the connection, or misconfigured SSL/TLS encryption.

Could not establish secure channel for SSL TLS with authority the request was aborted could not create SSL TLS secure channel?

However, the “Request was aborted: Unable to create SSL/TLS secure channel” exception can occur if the server returns an HTTP 401 “Unauthorized” response to an HTTP request. You can find out if this event occurs by enabling the System.Net trace level logging section for your client tool, as described in my answer.

Could not establish trust relationship for the SSL TLS secure channel with authority the underlying connection was closed could not establish trust relationship for the SSL TLS secure channel?

WebException: Primary Marriage: Failed to establish a trusted alliance for the SSL/TLS secure channel. The problem occurs when the Orion Web Console is using HTTPS with SSL and the certificate path contains your invalid certificate or was not imported into the Trusted Root Certification Authorities store.