Home
General
Well known TCP/UDP port numbers
Classless inter-domain routing
Compression
CODEC
Connection oriented
Connection less
Authentication
Authorisation
Bandwidth
PPPoE
Smurf attack
Cisco basics
Switching
Network management
HSRP
SSH
IPsec
Routing protocols
Address translation
Unified communication
Quality of service
Wireless
CCIE
Cisco NX-OS / Nexus
ASA / PIX Security Appliances
What is a codec
A CODEC converts in hardware or software sound, speech or video signals from analog to digital code and vice versa.
Vulnerability Announcements
Multiple Vulnerabilities in Cisco Unified IP Phones 7900 Series
Default Credentials Vulnerability in Cisco Network Registrar
Cisco RVS4000 and WRVS4400N Web Management Interface Vulnerabilities
Cisco Content Services Gateway Denial of Service Vulnerability
Multiple Vulnerabilities in Cisco AnyConnect Secure Mobility Client
Cisco SA 500 Series Security Appliances Web Management Interface Vulnerabilities
Cisco ASR 9000 Series Routers Line Card IP Version 4 Denial of Service Vulnerability
Field Notices
(Cisco CRS Series Routers) Field Notice: FN - 63126 - CRS: 1OC768-ITU/C cards may experience High Bit Error Rate (BER) or loss of Transmit power incidents in certain batch of optical module - Workaround Fix on Failure
(Cisco CRS Series Routers) Field Notice: FN - 63046 - CRS - 1OC768-POS-SR cards May Experience Bit Error Rate (BER) Incidents Due to Onboard Short - Fix on Failure
(Cisco MGX 8800 Series Switches) Field Notice: FN - 63319 - MGX - VXSM-SW May Report Error Code 400 for CAS Signaling Call - Workaround Available
(Cisco 7800 Series Media Convergence Servers) Field Notice: FN - 63324 - A Limited Number of HP DL380-G6 Servers Shipped Prior to November 16, 2009 May Unexpectedly Reboot
(Cisco 800 Series Routers) Field Notice: FN - 63343 - PCEX-3G-HSPA-R6 Modem not Recognized in Cisco IOS 15.1(1)T of Cisco 880G Series Router - Cisco IOS Upgrade Required
(Cisco MDS 9500 Series Multilayer Directors) Field Notice: FN - 63132 - MDS9000 - Potential DIMM Memory Issue in a Small Number of DS-X9530-SF2-K9 Supervisor Cards Manufactured Between September 2007 and February 2008
