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Cisco Stealthwatch Management Console (SMC) Overview

Cisco Stealthwatch collects and analyzes network data to deliver comprehensive visibility and protection for even the largest and most dynamic networks. Stealthwatch analyzes industry-standard NetFlow data from Cisco and other vendors’ routers, switches, firewalls, and other network devices to detect advanced and persistent security threats such as internally spreading malware, data leakage, botnet command and control traffic, and network reconnaissance Stealthwatch...

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Cisco SD-WAN Zero Touch Site Bring Up

Viptela provides an automatic provisioning software as a service (SaaS) called zero-touch provisioning (ZTP) The default configuration that is shipped on non-wireless hardware vEdge routers includes the following commands that allow the ZTP process to occur automatically: system vbond ztp.viptela.com—Configures the initial vBond orchestrator to be the Viptela ZTP SaaS server. vpn 0 interface ip dhcp-client—Enables DHCP on one of the...

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Cisco Phone “Registered/Unregistered/Unknown” status

A phone that has never been registered to Cisco CallManager would be in Unknown status. But, a phone that was registered to the Cisco CallManager at some point of time can be in Unregistered or Unknown status depending on a service parameter in the “RIS Data collector” service. This parameter specifies the RIS database information storage period for any unregistered or...

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How to verify the MD5 checksum

Whenever you download any valuable data from the Internet, it is completely necessary that you check the integrity of the downloaded file and ensure that the downloaded file is exactly the same as that of the original one. In this scenario, the MD5 hash can become handy: Windows: certutil -hashfile path\file.iso MD5 Mac OS: md5 filename.iso Linux: md5sum filename.iso

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Cisco Testing New Jabber Config file

To test the Jabber config changes on just 1 machine and if it goes successful apply it globally, we can use Cisco Support Field in the CSF device configuration: upload a new jabber-config xml file on TFTP server with the modified name <jabber-config-name>.xml. change cisco support field on CSF device configuration page configurationfile=jabber-config-photo-mod.xml restart jabber client

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Cisco SD-WAN Basic Overview

Key components of the solution: vManage Network Management System (NMS)—The vManage NMS is a centralized network management system that lets you configure and manage the entire overlay network from a simple graphical dashboard – in the data center. vSmart Controller—The vSmart controller is the centralized brain of the Viptela solution, controlling the flow of data traffic throughout the network. The vSmart controller works...

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Cisco ISE Force Guests to accept AUP

Here is how I usually configure NEW-Guest-Endpoints purge policy and options we have. Administration > identity Management > Settings > Endpoint Purge ElapsedDays—Number of days since the object is created. For every day purge: “Elapsed Days less than 1“: This should work for brand new endpoints, but what if you implement this purge rule after ISE has already learned the MAC...

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Cisco CUCM Firefox Secure Connection Failed

If you can’t get into the CUCM with the following message: “Secure Connection Failed: SSL_ERROR_WEAK_SERVER_EPHEMERAL_DH_KEY : Diffie-Hellman” Workaround #1: 1. In Firefox, Enter “about:config” in the URL field and press enter2. Accept the “This might void your warranty!” warning by clicking “I’ll be careful, I promise!” button3. In the search field, enter “security.ssl3.dhe_rsa_aes”4. Double click each result (128 SHA and 256...

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RightFax H323 -> SIP

I had to migration RightFax from the H323 into SIP and spent some time on this. The procedure is pretty strength forward, but one thing is good to know: changed the Media Renegotiate Delay Outbound from -1, which means Rightfax does not initiate T.38 but waits for the other side to initiate it, to 2000 which means that Rightfax initiates T.38...

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Cisco CUCM LDAP notes

Switch from LDAP to Local users:CUCM SQL query becomes very useful if we need to do the same task multiple times. And CUCM GUI interface is very time-consuming for these tasks. Here is how to switch users from LDAP to CUCM Local: run sql update enduser set fkdirectorypluginconfig=NULL where userid=’username1′ run sql update enduser set fkdirectorypluginconfig=NULL where userid=’username2′ Cisco CUCM LDAP...