Tag Archives: named access list

Blocking Hackers From Accessing Your Switch via Telnet/SSH

It’s amazing how much rattling at the doors and attempted intrusions companies become accustomed to seeing on their networks. Here I show a simple way to block telnet/SSH access to your switch. First, you should never use telnet to manage … Continue reading

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Cisco – Filtering Unwanted Packets with Standard Access Lists

Access lists (ACLs) are basically statements that packets are compared against for the purpose of taking some action if a match occurs. After an access list is created, it can be applied to inbound or outbound traffic; in some cases … Continue reading

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