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Tag Archives : tcp

Cisco: Multiple Vulnerabilities in Cisco PGW Softswitch

Cisco: Multiple Vulnerabilities in Cisco PGW Softswitch

Multiple vulnerabilities exist in the Cisco PGW 2200 Softswitch series of products and they are related to processing Session Initiation Protocol (SIP) or Media Gateway Control Protocol (MGCP) messages. SIP is a popular signaling protocol used to manage voice and video calls across IP networks such...
Filed in: Cisco
Great tool for testing QoS implementation

Great tool for testing QoS implementation

After my last post, some readers were asking what tool did I used for testing the QoS and how satisfied I’m with it. The name of the tool is Packgen. According to its developer developers, “Packgen is a simple network packet generator handling diffserv markers, useful for testing network...
Filed in: Free-tools
Cisco: DoS protection using TCP Intercept

Cisco: DoS protection using TCP Intercept

Every now and then, all network engineers have to deal with some kind of network attack.  Usually, the attack does not target the network devices, but the machines that provide services (e.g. www, database hosting…), because it’s more easy to find on the Internet a script that is probing...
Filed in: Cisco-security
Cisco hidden tools: Testing TCP connection

Cisco hidden tools: Testing TCP connection

Sometimes you have a connection between 2 routers that you want to test with something more than a ping. Cisco devices have a hidden command which is actually a very powerful testing tool for your TCP connection. The command is “ttcp” and you will not find it in the the default list of commands...
Filed in: Cisco-routing
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