Fastback Networks, a San Jose-based mobile infrastructure company, has closed a $15 million round led by the venture firm Matrix Partners. Existing investors, including Foundation Capital; Granite Capital; and Juniper Networks, through its Junos Innovation Fund, also participated in the Series B financing. Fastback Networks raised $11 million in Series A funding in 2011.

Juniper Networks has completed an investment in iStreamPlanet‘s Series A funding, which was led by Intel Capital. The investment will be funded by Juniper Networks’ Junos Innovation Fund. iStreamPlanet plans to use the proceeds from its financing to accelerate the development of its live video streaming solutions.

FireEye, a next-generation threat protection business has appointed David DeWalt, former president and chief executive officer of McAfee as chairman of the board of directors. Sequoia Capital partner and former Google senior vice president of engineering Bill Coughran has also joined the board. Based in Milpitas, California, FireEye is backed by Sequoia Capital, Norwest Venture [...]

Vidyo, Inc. said it raised a Series D round of funding in a deal led by QuestMark Partners and joined by Juniper Networks and existing investors Menlo Ventures, Rho Ventures, Star Ventures, and Four Rivers Group. Terms of the investment were not released. Vidyo has raised $97M to date. PRESS RELEASE Juniper Networks’ Junos Innovation [...]

Violin Memory, Inc. said it raised $50 million in Series D funding, giving the company a market value of more than $800 million. Investors in the round include Toshiba, Juniper Networks and new investors SAP Ventures and Highland Capital. PRESS RELEASE Violin Memory Flashes Forward with a $50 Million Mezzanine Round and $800+ Million Valuation [...]

Apigee Corp., a maker of API products and technology for developers and companies, has added $7 million in fresh capital, according to a regulatory filing. The company is backed by Norwest Venture Partners, Bay Partners, SAP Ventures, Juniper Networks, Net One Systems and Third Point Management Company. The company, previously known as Sonoa Systems, is based in Palo Alto, Calif.

Mountain View, Calif.-based Violin Memory Inc. has raised $40 million in Series C financing for its scalable memory arrays. The latest infusion comes just months after a $35 million Series B round, announced in February. Violin Memory is backed by Toshiba America Electronic Components Inc., a subsidiary of Toshiba Corporation, Juniper Networks and other undisclosed investors. The newest infusion will help the company bolster product development and global expansion.

Mountain View, Calif.-based data storage company Violin Memory has raised $35 million in Series B financing. Toshiba America Electronic Components Inc., a subsidiary of Toshiba Corporation, contributed to the round, along with Juniper Networks and other undisclosed investors.

Benchmark Capital, the Sand Hill Road firm that has enjoyed a succession of exits since its 1995 founding — including eBay, Juniper Networks, Red Hat, and, more recently, OpenTable — has closed on $425 million for its seventh fund, according to a source familiar with the fund. (UPDATE: General Partners Bob Kagle, who led Benchmark’s [...]

Juniper Networks is paying $95 million to buy virtualization security firm Altor Networks. Altor had previously raised capital from Accel Partners, DAG Ventures and Foundation Capital. The company was also backed by the Junos Innovation Fund, which is funded solely by Juniper Networks. Juniper says the deal will allow it to expand its security offerings. Altor was formed in 2007 and based in Redwood Shores, Calif.