With the release of OpenSSH v6.7, weaker ciphers have been disabled. Cisco CUCM has not updated the weaker ciphers used within CUCM as of v11. This causes issues with backups to the OpenSSH versions in the latest distributions. This post walks through the identification of the issue and the correction used in the CollabBackups appliance.
I currently have some UC 10.x and 11.x licensing that is purchased and used for demonstrations. With the recent purchase of the 11.x licenses, a Prime License Manager (PLM) server was stood up to manage the multiple clusters using multiple versions of the CUCM platform. This post walks through the process of standing up a stand-alone PLM server, pulling licenses from the Cisco licensing website, and the rehosting of licenses from a legacy license manager.
I was working through a factory reset process on my Cisco 8945 phone and after the reset completed successfully, the phone attempted to download the latest firmware version from the device defaults page. The phone froze after powering on each time. Like usual, the fix was pretty straight forward.
While attempting to find out what an existing jabber-config.xml file had in it, I was having some issues using a TFTP client across port 69 to the server. While searching around, I found that the solution was simple: use port 6970 to view the file through a web browser.
For those of you who open their Cisco CUBE to 0.0.0.0 0.0.0.0 or issue the no ip address trusted list command, hopefully this may change your mind.
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Working with voip.ms for the first time was pretty straightforward. I liked the $.99/mo DID with a pay per minute session that allowed simultaneous connections across my lab SIP trunk. After adding some funds, it appeared that their wiki page’s configuration was not working properly. I imagine it would be a common problem, so below is the debug message that took me down the path for a successful 200 OK SIP connection as well as the correct sip-ua configuration.
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