EXHIBIT 23.1 CONSENT OF INDEPENDENT AUDITORS We consent to the inclusion of our report dated June 17, 1998 (July 8, 1998 with respect to Note F[3] July 17, 1998, with respect to the third paragraph of Note A and September 11, 1998 with respect to Note J), which contains an explanatory paragraph with respect to the Company's ability to continue as a going concern, on the financial statements of Network-1 Security Solutions, Inc. as of December 31, 1997 and 1996 and for each of the years then ended, in Amendment No. 1 to its Registration Statement on Form SB-2 and to the reference to our firm under the caption "Experts" in the Prospectus. /s/ Richard A. Eisner & Company, LLP New York, New York September 15, 1998