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Tag: bpdu

  • Yersinia – Free Network Testing tool for CDP,STP,VTP,DHCP,DTP,ISL,802.1Q,802.1X

    Yersinia is a free Network Penetration testing tool used to test and analyse some of the most commonly used protocols on your network. Penetration testing tools of this kind will provide deep insight on network security issues. Yersinia is a UNIX based tool that works on Linux, Solaris 8, FreeBSD.

    NOTE: The tool is described as a tool to perform network tests and exercise responsible actions when performing tests which includes obtaining the permission from responsible authorities. DO NOT USE THIS TOOL FOR ANY UNAUTHROSIED HACKING PURPOSES

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  • How to enable Spanning Tree Portfast in Cisco Catalyst switch (IOS)

    STP Portfast is a feature in Cisco IOS which allows a switchport which is participating in STP to directly transition from Blocking mode  to Forwarding mode when a device connects and the link goes up. This can improve the initial connect time and can fix some issues with Windows based devices connecting to the Active Directory domains.

    STP Portfast is ideal for ports which connects directly attached devices and certainly not for the ports which connects a hub or a switch. Hence, good to set switchports that directly connect end devices on your Access switch.

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