EHIBIT
23.1
CONSENT
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. 1 on Form S-1 Registration Statement (No.
333-143710) and the Registration Statement Form S-8 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 years ended December 31, 2008 and 2007 included
in its Annual Report on Form 10-K for the years ended December 31, 2008 and 2007
filed with the Securities and Exchange Commission.
/s/ Radin, Glass & Co.,
L.P.
Radin,
Glass & Co., LP
Certified
Public Accounts