Usually when we admin a network, we need to know what are the protocols used more frequently, and why not, discover if someone are using improper P2P software; so we can use SPAN. The Switched Port Analyzer (SPAN) feature, which is sometimes called port mirroring or port monitoring, selects network traffic for analysis by a network analyzer. For example, if you want to capture Ethernet traffic that is sent between host A and host B, you must implement SPAN feature. In this diagram, the sniffer is attached to a port (destination SPAN port) that is configured to receive a copy of [...]

Two categories of protocol exist at the network layer: routed and routing. A routed protocol is a Network Layer protocol that is used to move traffic between networks. Routed protocols allow a host on one network to communicate with a host on another, with routers forwarding traffic between the source and destination networks. IP, IPX, and AppleTalk are all examples of routed protocols. Routing protocols let routers route routed protocols after a path has been determined. RIP, IGRP, EIGRP, OSPF, IS-IS, BGP are all examples of routing protocols.

On September 24, 2008, at about 16:00 GMT, the The Cisco Product Security Incident Response Team (PSIRT) has published 12 new vulnerability advisories. Mainly these vulnerabilities are DOS attack.

The configuration register can be used to change router behavior in several ways, such as: how the router boots (into ROMmon, NetBoot) options while booting (ignore configuration, disable boot messages) console speed (baud rate for a terminal emulation session) To view the current setting of the configuration register, use the show version command:

Cisco has agreed to purchase open-source instant messaging firm Jabber. The company plans to use the Jabber messaging software within its WebEx Connect and Unified Communications packages. “Enterprise organizations want an extensible presence and messaging platform that can integrate with business process applications and easily adapt to their changing needs,” said Doug Dennerline, Cisco senior vice president, Collaboration Software Group. “With the acquisition of Jabber, we will be able to extend the reach of our current instant messaging service and expand the capabilities of our collaboration platform. Our intention is to be the interoperability benchmark in the collaboration space.”

Have you ever seen a sci-fi movie where object and people were represented through holography? Now, this technology is no more sci-fi! The system uses a high-definition camera to shoot scenes and a high-definition projector with a special screen. The Cisco On-Stage TelePresence Experience was an ambitious collaboration between Cisco and Musion Systems, which took place during the opening of Cisco’s Globalization Centre East in Bangalore, India.

Cisco Router HTTP Administration CSRF Remote Command Execution Universal Exploit. Replace “10.10.10.1″ with the IP address of the target router, embed this in a web page and hope for the best. This is only for test use.

Cisco routers with the HTTP administration interface enabled are vulnerable to an CSRF (Cross-Site Request Forgery) vulnerability that can yield remote command execution with level 15 privileges. An attacker can execute ANY command on the router with level 15 (root, same as enable) privileges (usually level 15 user by default) by getting a target user (administrator or etc) to view a web page that has the exploit embedded. The exploits can be modified to, on loading of the page with the exploits embedded, to execute both exec and configure commands on the Cisco router. These exploits have been tested on [...]

In a network environment, it is a good practice monitor Cisco devices. One of the most famous protocol to control and manage Cisco devices is SNMP (Simple Network Management Protocol). SNMP exposes management data in the form of variables on the managed systems, which describe the system configuration. These variables can then be queried (and sometimes set) by managing applications. The main features are: The SNMP is an application layer protocol that facilitates the exchange of management information between network devices. It is part of the Transmission Control Protocol/Internet Protocol (TCP/IP) protocol suite. It uses UDP port 161 for the [...]

You never be asked if your Cisco Wlan product agrees with your country standards? Do you know that in New Zealand and Australia, the 802.11abg Access Points are approved only with antennas of 6dBi or less and indoor use only from 5150-5350 MHz? Do you know that in Russian Federation, the 802.11abg Mesh Access Points end user must limit 5 GHz operation to 5650-5725 MHz? The Cisco Aironet products and the specific countries for which each product is currently certified for order and shipment are listed in the Wireless LAN Compliance Status at Wireless LAN Compliance Status. This document is [...]