EXHIBIT 23.1
The Board
of Directors
Network-1
Security Solutions, Inc.
We
consent to the reference to our firm under the caption “Experts” in the
Post-Effective Amendment No. 2 on Form S-1 (of which this consent is filed as
Exhibit 23.1) pertaining to the Network-1 Security Solutions, Inc. and to the
incorporation by reference therein of our report dated March 25, 2009
related to the financial statements of Network-1 Security Solutions, Inc. for
the year ended December 31, 2008 and December 31, 2007 included in its
Annual Report on Form 10-K for the year ended December 31, 2008 filed with the
Securities and Exchange Commission.
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/s/
Radin, Glass & Co.,
LLP
Radin,
Glass & Co., LLP
New
York, New York
April 24,
2009
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