As part of any management and audit solution for networking, Syslog is vital.   Syslog messages allow us to track system error messages, exceptions, and other information, such as device configuration changes. It allows for historical reporting, depending on the application keeping the logs, as well as help in fault finding.   Cisco devices support [...]

Secure Shell (SSH) is a protocol that allows us to connect to devices securely by using encryption. Gone are the days were most networking engineers are happy with using plain telnet with it’s clear text transmission of data which could result in an attacker sniffing the line for usernames and passwords. Configuring SSH on a [...]

Hashing is very different from encryption even though so many people believe it is an encryption protocol. Yes it does scramble the data, so from that aspect it is an encryption program, but the big difference between hashing and encryption, is that Hashing is mathematically impossible to reverse. Now I’m not the kind of person [...]

Ports are logical channels that devices use to identify a type of traffic. If you can imagine that you and I have a 10 meter cable, that has 10,000 wires running through it, and I take 2 of the wires and attach them into the ends of a battery, and you choose 2 wires on [...]

The concept of encryption can be quite daunting when you first look at it, however the basic concept of encryption is not that hard to understand   When I moved into my house, my bathroom door didn’t have a key. The previous owners of the house didn’t know what key was needed for that door [...]