Move to Type 9 password

Its highly recommended to replace your type 5 and 7 passwords with type 9 passwords. Many of us are aware that type 5 and type 7 passwords can be decrypted using online tools but many still not. Todays blog is all about configuring type 9 password. You can try decrypting type 5 and 7 password…

Remove RSA host key using ssh-keygen

nithineluvathingal@EluS-MacBookPRO ~ % ssh administrator@198.18.133.3 @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ @    WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!     @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY! Someone could be eavesdropping on you right now (man-in-the-middle attack)! It is also possible that a host key has just been changed. The fingerprint for the RSA key…

Verify MD5 from Router CLI

During a voice gateway IOS upgrade task to validate the file, customer requested to verify if the copied file and the file in the flash are of same size. Its not the right way. We need to compare the MD5 value. Today’s blog is about how to verify the MD5 using router CLI. Command to…

Analyzing Debug ISDN Q931

In this blog i explain complete set of messages send between ISP and Gateway for a call made from my mobile to my desk phone extension 399. I did a debug ISDN Q931 on my gateway inorder to capture the messages. Even though a deep level analysis are mostly done by TAC, its always good…

OOREDOO OMAN SIP TRUNK

Ooredoo recently updated their SIP server and they had some special requirements. Below mentioned configurations was created with Cisco TAC support to meet the requirement. voice service voipsipmin-se 300registrar server expires max 600 min 60no update-calleridearly-offer forced voice class codec 1codec preference 1 g711alawcodec preference 2 g711ulawcodec preference 3 g729r8 dial-peer cor customname GSMname LANDLINEname…

Show/Debug Commands for one way/No way audio on ISR4K

Show commands are used for various purposes such as management, configuration verification and viewing statistics of various protocols and processes in Cisco IOS. Cisco Debug Commands are used for troubleshooting purposes. They display information about various router processes and operations. Using Debug commands information about traffic generated and received by the Router can also be…