Israeli Internet software security company Check Point Software Technologies Ltd. said Monday it is negotiating with federal regulators to foreclose any national security concerns over its $225 million pending acquisition of Sourcefire Inc., a privately held provider of software intrusion prevention systems.

The Committee on Foreign Investment in the U.S., a multiagency panel reviewing the merger, started a 45-day investigation into whether the transaction poses a risk to national security, a Check Point release reported. Most foreign U.S. deals are approved after CFIUS completes an informal 30-day probe, but this transaction has raised the eyebrows of some of the panel members, leading to the lengthier examination.