Blogs

Enabling AACC Shadowing After 24 Hours If your standby server has been out of synchronization for more than 24 hours, you will need to complete the following process to restart AACC 6.4 shadowing. Otherwise, the standby server will fail to synchronize with the active AACC server. Execute one restore at a time; i.e. ADMIN, CCMS, and CCT. The procedure listed below […]

VTC Video Conferencing Rules for Palo Alto Firewall If you have a Cisco Telepresence VCS Expressway or a legacy Tandberg Border Controller or even an MCU behind a Palo Alto Firewall there are several Application based objects needed to be in your Outbound and Inbound Security policy. rtp-base rtcp h.225 h.245 h.323 sip rtp Normally the logs will show which ports are being […]

Security Today Security Today is extremely complex and yet simple to bypass for a willing mind with enough time and computer power to exploit vulnerabilities that may or may not be accounted for per your internal security or IT operations team. The multi-layered threat, with many mutations within the attack surface, has increased significantly from the Virus […]

Cisco TMS Telepresence Management Suite Upgrade & Install from 13.0 to 14.6 If you have an old version of TMS (13.0) running on an unsupported Windows Server 2003, here is a very extensive procedure to upgrade it to TMS version 13.2, do Database recovery, restore and conversion, and migration to a new Windows 2012 R2 system running on SQL Server Express 2012. The final step was to […]

Next Generation Firewall Overview with Glimpse of Application Identification “I am not an advocate for frequent changes in laws and constitutions, but laws and institutions must go hand in hand with the progress of the human mind. As that becomes more developed, more enlightened, as new discoveries are made, new truths discovered and manners and opinions change, with the change of circumstances, institutions must […]

ICMP Security This is a draft guide to handling ICMP securely. Guide Analysis to Handling ICMP protocol Summary: This guide is an attempt to help answer common questions related to the handling of ICMP protocol in a secure and effective manner. Comments and feedback is always welcomed. This article is meant to cover the major area in […]

Layer 2 Tracing for (6500, 7609, 4500) Cisco Switches In a 6509, 7609 or any Chassis based Cisco switch, to determine where the switch forwards a Source and Destination pair to an actual port in a Port-channel/Etherchannel do the following commands: Note: Doesn’t apply to Nexus switches. First enter console for switch: port-channel hash Switch# remote login switch Trying Switch ... Entering CONSOLE for […]

Great SMTP DNS and Troubleshooting tool Go to http://www.mxtoolbox.com This test will list MX records for a domain in priority order. The MX lookup is done directly against the domain’s authoritative name server, so changes to MX Records should show up instantly. You can click Diagnostics , which will connect to the mail server, verify reverse DNS records, perform a simple […]

Cisco ISR Platform feature by Ashburn Consulting A video presentation about the Cisco ISR platform from Cisco’s Solutions Architect, Randy Benn. IPICS, Video Distribution and Management, POE switch modules, IP Camera termination are all integrated in one ISR platform. Interview conducted by Amante Bustamante.  

MPLS L3 VPN White Paper Enterprise Network Design White Paper For Metropolitan and Campus Networks – MPLS L3VPNs Robert Shields Sr. Network Engineer, CCIE # 12096 January 2012 Enterprise Network Challenges of Today and Beyond Enterprise network and security managers continue to see their responsibilities increase within their respective IT organizations as applications and services continue to migrate to IP as a fundamental means of communication. […]