Networking giant Cisco has published a raft of security advisories as part of its biannual patch-release schedule.
Cisco and the security community are debating the reality of rootkits attacking the Cisco's Internetwork Operating System (IOS) after a researcher presented a proof of concept attack, which threatens Cisco routers and voice over IP phones.
Cisco Systems has released a security patch to fix vulnerabilities in a number of its products that are at risk of a denial of service attack.
Is convergence breeding a new brand of communications manager with skills in both voice and data?
Multiple vulnerabilities found in a VPN protocol used by most router vendors means that administrators are once again being advised to patch their network hardware, which is a far bigger issue than patching servers or desktops.
Using a USB drive to transfer setting to a Cisco router has many benefits. Among others, it can hold multiple configurations and copies of the Cisco IOS and it will speed up the copying process. Here's how to use a USB flash drive with a Cisco 871W router.
When it comes to configuring a new Cisco router, much of the configuration depends on what type of router it is as well as the purpose it will serve. However, every administrator has his or her own list of commands they use to configure every router "just right." This week, David Davis shares his own list of 10 commands to configure on every router.
A myriad of open-source products for administering networks is readily available. We look at a few that are particularly useful to Cisco administrators.
If you're using Telnet to control network devices, you should consider switching to something more secure. This tip tells you how to replace Telnet with Secure Shell (SSH).
Learn about the dangers from a series of newly discovered serious vulnerabilities in the Kerberos authentication software.
Keeping your Cisco equipment configured for optimal performance can be a time-consuming process. In this IT Dojo video, Bill Detwiler demonstrates five, time-saving tips for working more efficiently with Cisco IOS commands.
If you're thinking about voice over IP, we take a look at the steps involved in getting it set up and what's on offer from four major vendors.
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