Every autumn, in Dallas, Texas, one of the utmost exciting events takes place – the Texas State Fair. During the span of 24 days (usually), people from all over the world congregate to experience the pure ecstasy of biting into a fried Oreo (amongst other amazing selections of fried cuisine), exchange in a friendly “Howdy” […]
The Internet of Things is driving recruitment for the larger technology companies. As an increasing number of internet-connected devices have become available, every major developer wants their platform to be the number one, Wired reported. So, they are plucking the best and brightest out there to join the IoT movement.
It seems like there is a new cyberthreat announced every day, and that may actually be the case. According to security services provider Symantec, last year saw a 62 percent increase in data breaches, and 2.5 billion records have been exposed in malicious incidents over the past five years. This may be due to the worsening shortage of IT security professionals which, according estimates from Cisco, has reached one million people.
This problematic shortage is affecting various industries. Security is everyone’s business.
The order of deny and permit statements has a major impact on how Cisco IOS interprets IP access lists. For this reason, it’s helpful to have a way to easily control the order of lines and insert a line in a given position without having to rewrite the entire list. In the old days, each […]
If your network is down and a log indicates a duplex mismatch error, this may be caused by a failure in the auto-negotiation setting for duplex and speed in different Ethernet ports, or it may be caused by a mismatch between the hard-coded settings. To diagnose and resolve the problem, check the existing settings and […]
If everything else on your network is working fine, the inability to ping one important server may be mystifying and frustrating. IP conflicts are a common cause of such issues. Conflicts can result from static IPs, especially if there was a recent network change. Unplugging a suspect device to see if that resolves the problem […]
While it’s easier to manage one switch than many switches, a single switch may not give you all the ports you need. To solve this problem, stackable switches allow you to combine the individual switches into a single stack, which operates like a single switch. This provides an easy way to manage a large number […]
NTP (Network Time Protocol) synchronizes the time for time servers and clients. You can use it to synchronize your routers, switches, and access points. Synchronization also makes logs more useful, by ensuring that the timestamps are reliable. Unfortunately, a number of things can go wrong with NTP synchronization. If NTP isn’t working properly, there are […]
“Show” and “more” commands can spit out a ton of data to digest. To pinpoint the important information, use the “include” and “exclude” clauses. The syntax is fairly simple; just end the command with ” | include” or ” | exclude” at the end of the command, followed by a regular expression. Note the mandatory […]
When using the command line, it helps to be able to quickly correct a mistake. Cisco provides shortcuts that allow you to save time by deleting multiple characters at a time. For example, say the command is correct up to a certain point, and then everything to the end of the line is wrong. Simply […]