Cisco provides network security products such as virtual private networks (VPNs) and firewalls.

FORBES: Cisco Should Be $25 But No Thanks To Network Security Business

Customers generally tend to buy an entire solution to meet their network infrastructure requirements, and Cisco has capitalized on its ability to deliver both core network equipment and security products.

FORBES: Cisco Plugs Into Network Security Business, Stock Eyes $24

As Cisco continues its integration of network security solutions with its existing router platforms, this will result in higher sales of its security products, thereby boosting its market share.

FORBES: Network Security Is A Small But Growing Reason Cisco Runs At Least To $24