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  • I have been preparing for the Cisco CCNA Security Exam, and wanted to see if it is actually possible to make a poorly configured switch create a switching loop even if BPDU Guard was enabled on the access switch. If the rogue switch filters all the BPDU packets.

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  • Just to show how quickly technology has advanced, I did some benchmarks on a Cisco ASA5505 in order to see how it would perform encrypting information into a VPN. I made a quick test network between two interfaces on an HP DL350G6, with a Ubiquiti Edge Router on one interface, and the Cisco ASA5500 on the other interface. The baseline test with a straight through connection was 273Mbits/s, and through the Cisco ASA I only obatined 4.3Mbits/s regardless of the encryption that was utilized.

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