<DOCUMENT>
<TYPE>EX-99.2L.2
<SEQUENCE>9
<FILENAME>c68699a1ex99-2l_2.txt
<DESCRIPTION>OPINION/CONSENT OF BINGHAM DANA LLP
<TEXT>
<PAGE>

                                                                    EXHIBIT 1.2




                                   May 8, 2002




Vedder Price Kaufman & Kammholz
222 N. LaSalle Street
Chicago, Illinois 60601

         RE:      Nuveen Insured Dividend Advantage Municipal Fund

Ladies and Gentlemen:

         We have acted as special Massachusetts counsel to Nuveen Insured
Dividend Advantage Municipal Fund, a Massachusetts business trust (the "Fund"),
in connection with the Fund's Registration Statement on Form N-2 filed with the
Securities and Exchange Commission (the "Commission") on April 5, 2002 (the
"Initial Filing") as such Registration Statement is proposed to be amended by
Pre-Effective Amendment No. 1 thereto to be filed with the Commission on or
about May 8, 2002 (as proposed to be amended, the "Registration Statement") with
respect to 3,160 Shares Series M, 3,080 Shares Series T, and 3,080 Shares Series
TH of the Fund's Municipal Auction Rate Cumulative Preferred Shares, Liquidation
Preference $25,000 per share (the "Shares"). You have requested that we deliver
this opinion to you, as special counsel to the Fund, for use by you in
connection with your opinion to the Fund with respect to the Shares.

         In connection with the furnishing of this opinion, we have examined the
following documents:

         (a) a certificate dated a recent date of the Secretary of The
Commonwealth of Massachusetts as to the existence of the Fund;

         (b) copies of the Fund's Declaration of Trust and of all amendments
thereto (the "Declaration") on file in the office of the Secretary of The
Commonwealth of Massachusetts;

         (c) a draft of the Fund's Statement Establishing and Fixing the Rights
and Preferences of Municipal Auction Rate Cumulative Preferred Shares attached
as Appendix A to the Statement of Additional



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Vedder Price Kaufman & Kammholz
May 8, 2002
Page 2


Information included in the printer's proof referred to in (f) below (the
"Statement");

         (d) a certificate of the Secretary of the Fund, certifying as to, and
attaching copies of, the Fund's Declaration, Statement, By-Laws, and certain
resolutions adopted by the Trustees of the Fund;

         (e) a conformed copy of the Initial Filing; and

         (f) a printer's proof, which we received from the printer as a .pdf
file on May 7, 2002, of Pre-Effective Amendment No. 1 to the Initial Filing to
be filed with the Securities and Exchange Commission (the "Amendment").

         In such examination, we have assumed the genuineness of all signatures,
the conformity to the originals of all of the documents reviewed by us as
copies, the authenticity and completeness of all original documents reviewed by
us in original or copy form and the legal competence of each individual
executing any document.

         We have assumed that the Amendment will be duly filed with the
Commission in substantially the form of the printer's proof referred to in (f)
above, that the Statement will be duly completed, executed and delivered in
substantially the form included in such printer's proof and in accordance with
the resolutions of the Trustees attached to the certificate referred to in (d)
above, and that the Statement will be duly filed with the office of the
Secretary of The Commonwealth of Massachusetts.

         This opinion is based entirely on our review of the documents listed
above and such investigation of law as we have deemed necessary or appropriate.
We have made no other review or investigation of any kind whatsoever, and we
have assumed, without independent inquiry, the accuracy of the information set
forth in such documents. As to our opinion below relating to the valid existence
of the Fund, our opinion relies entirely upon and is limited by the certificate
referenced in paragraph (a) above.

         This opinion is limited solely to the laws of The Commonwealth of
Massachusetts as applied by courts located in such Commonwealth, except that we
express no opinion as to any Massachusetts securities law.



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Vedder Price Kaufman & Kammholz
May 8, 2002
Page 3


No opinion is given herein as to the choice of law or internal substantive rules
of law which any tribunal may apply.

         We understand that all of the foregoing assumptions and limitations are
acceptable to you.

         Based upon and subject to the foregoing, please be advised that 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 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 your reliance on this opinion in connection with
your opinion to the Fund with respect to the Shares, to the reliance by the Fund
on this opinion, to the reference to our name in the Registration Statement and
in the prospectus forming a part thereof under the heading "Legal Opinions" and
to the filing of this opinion as an exhibit to the Registration Statement.

                                                 Very truly yours,


                                                 Bingham Dana LLP

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