<DOCUMENT>
<TYPE>EX-99.2L.1
<SEQUENCE>8
<FILENAME>c68699a1ex99-2l_1.txt
<DESCRIPTION>OPINION/CONSENT OF VEDDER PRICE KAUFMAN & KAMMHOLZ
<TEXT>
<PAGE>
                                                                     EXHIBIT l.1


                                             May 8, 2002



Nuveen Insured National Dividend Advantage Municipal Fund
333 West Wacker Drive
Chicago, Illinois  60606

         Re:     Nuveen Insured National Dividend Advantage Municipal Fund
                 Municipal Auction Rate Cumulative Preferred Shares to be Issued
                 Pursuant to the Underwriting Agreement (File No. 333-85708)

Ladies and Gentlemen:

         We are acting as counsel to Nuveen Insured National Dividend Advantage
Municipal Fund, a Massachusetts business trust (the "Fund"), in connection with
the Fund's filing of a registration statement on Form N-2 (the "Registration
Statement") with the Securities and Exchange Commission covering the
registration, authorization and proposed issuance of up to 3,160 shares of
Series M, 3,080 shares of Series T, 3,080 shares of Series TH, of its Municipal
Auction Rate Cumulative Preferred Shares ("MuniPreferred"), liquidation
preference of $25,000 per share (the "Shares"). In that capacity, we have
examined such corporate records, certificates and other documents, and have made
such other factual and legal investigations as we have deemed necessary and
appropriate for the purposes of this opinion. Insofar as this opinion pertains
to matters governed by the laws of The Commonwealth of Massachusetts, we are
relying, with your consent, solely upon the opinion of Bingham Dana LLP dated
May 8, 2002, which opinion is satisfactory in substance and form to us.


         We have assumed that the Registration Statement, the underwriting
agreement (the "Underwriting Agreement") and the Statement Establishing and
Fixing the Rights and Preferences of Municipal Auction Rate Cumulative Preferred
Shares (the "Statement") will be duly completed, executed and delivered and in
accordance with the resolutions of the Trustees attached to a Certificate of the
Secretary of the Fund, certifying as to, and attaching copies of, the Fund's
Declaration of Trust ("Declaration"), Statement, By-Laws, and certain
resolutions adopted by the Trustees of the Fund and that the Statement will be
duly filed with the Office of the Secretary of The Commonwealth of
Massachusetts.


         Based upon the foregoing, it is our opinion that:

         (1)      The Fund is duly established and validly existing under the
                  Fund's Declaration and the laws of The Commonwealth of
                  Massachusetts as a voluntary association

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[VEDDERPRICE LOGO]

Nuveen Insured National Dividend Advantage Municipal Fund
May 8, 2002
Page 2

                  with transferable shares of beneficial interest commonly
                  referred to as a "Massachusetts business trust."


         (2)      The Shares, when issued and sold in accordance with the Fund's
                  Declaration, Statement and By-Laws will be legally issued,
                  fully paid and non-assessable, except that, as set forth in
                  the Registration Statement, shareholders of the Fund may under
                  certain circumstances be held personally liable for its
                  obligations.


         We hereby consent to the filing of this opinion as Exhibit l.1 to the
Registration Statement and to the reference to us under the caption "Legal
Opinions" in the prospectus contained in the Registration Statement.

                                           Very truly yours,






                                           /s/ Vedder, Price, Kaufman & Kammholz


DAS/COK


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