Cisco Systems agreed to buy IronPort Security, a developer of e-mail and Web security products, for US$830 million, according to media reports citing Cisco executives. IronPort offers a range of appliances that enterprises use to protect their networks from Internet threats. Its appliances also help secure e-mail services for ISPs. In addition, IronPort sells a security management appliance that offers enterprises a single location to manage, store and monitor corporate policies. The acquisition also follows several other smaller buys for Cisco during 2006, including Tivella, an IP video company, and Meetinghouse Data Communications, a wireless security vendor. The acquisition of IronPort is expected to close in July, the reports say.-Nancy Gohring, IDG News Service (Dublin Bureau)Related Links:\n\nCisco\u2019s Linksys\u2014Not Apple\u2014Launches iPhone VoIP Devices\n\nCisco CEO Preaches Networks, CollaborationCheck out our CIO News Alerts and Tech Informer pages for more updated news coverage.