EXHIBIT
23.2
CONSENT
OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
We
consent to the reference to our firm under the caption “Experts” in the
Registration Statement (Form S-8) pertaining to the amended and restated 1996
Stock Option Plan and 10 individual option agreements of Network-1 Security
Solutions, Inc. (the “Company”) and to the incorporation by reference therein of
our report dated February 22, 2005, on our audit of the financial statements
of
the Company as of December 31, 2004 and for the year then ended, included in
the
Annual Report on form 10-KSB, for the year ended December 31, 2005, filed with
the Securities and Exchange Commission.
Eisner
LLP
New
York,
New York
February
5, 2007