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IOS (Internetwork Operating System)

Cisco's proprietary routing software, which has been extended over the years to include additional features, such as security (it supports VPNs and NAT, for example) and QoS. Although originally designed for routers, it runs on many Cisco switches as well.

Additional resources

Cisco's IOS page
Additional info and documentation.

IOS changes could alter face of Cisco routers
Describes the next-generation version of IOS. Network World, 08/23/04.

Routers/Switches research center
Latest router and switch news, analysis and newsletters from Network World Fusion.

Latest IOS news and analysis

What are Cisco's top network-management challenges?
09/03/08
Automation, better metrics top list of Cisco's network-management challenges.

Protect your Cisco router against IOS rootkit software
05/27/08
What can we do to protect our Cisco routers against the IOS rootkit software that was described at the EUSecWest conference last week?

Cisco IOS vs. Juniper JUNOS: The technical differences
04/17/08
A look at the architectural differences between Cisco's IOS and Juniper Networks' JUNOS

Cisco's IOS vs. Juniper's JUNOS
04/17/08
Juniper Networks says Cisco has too many versions of IOS, the software brains of its routers and switches. Cisco counters that Juniper has way more than one version of JUNOS, too. In the end, will their different operating-system architectures make any difference in the market?

Cisco opens ISR routers to software developers
04/14/08
Cisco is opening up two pieces of its branch office gear to application developers in an effort to reduce the amount of equipment businesses have to place and manage in small business locations.

Cisco clarifies converged mobility plans
12/19/07
At its analyst conference last week in San Jose, Cisco shed some light on its mobile convergence progress. The company's strategy can be considered a subset of its year-old "network is the platform" vision, a notion that, in part, encourages furthering collaboration as a network-centric business process.

Cisco, Juniper open operating systems
12/13/07
Cisco and Juniper this week both hit upon the same bright idea: to open their router operating systems to third-party developers.

Cisco opening up IOS
12/12/07
Cisco plans on opening up its venerable IOS routing software to third-party developers, company officials at this week's C-Scape conference said.

Cisco rolls out branch office router, LAN switch, security gear
09/26/07
Cisco this week is unveiling a raft of products designed to allow customers to implement a consistent set of security, unified communications, application acceleration and wireless services at remote sites.

Cisco says FTP feature in IOS is a hacker backdoor
05/11/07
Cisco says a flaw in the FTP server utility in its IOS router/switch software could be used as a backdoor by attackers.

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