San Jose-based Cisco Systems is acquiring Meetinghouse Data Communications, a provider of 802.1x security software, in a deal worth $43.7M. Cisco said today that the cash deal is expected to close in the first quarter of 2007, which ends October 28th. Meetinghouse is a provider of client-side, security software used for authorizing users and host devices. Cisco said that the purchase is a natural extension to its Network Admission Control (NAC) and Cisco Compatible Extensions (CCX) initiatives. Meetinghouse employes 77 in Portsmouth, NH.