SHIVA CORPORATION Proxy for Annual Meeting of Stockholders June 18, 1998 SOLICITED ON BEHALF OF THE BOARD OF DIRECTORS The undersigned hereby appoints Robert P. Cirrone and M. Elizabeth Potthoff, and each of them, proxies, with full power of substitution, to vote all shares of stock of Shiva Corporation (the "Company") which the undersigned is entitled to vote at the Annual Meeting of Stockholders of the Company to be held on Thursday, June 18, 1998, at 10:00 a.m., local time, at the Fleet Headquarters, Fleet Center, 75 State Street, 8th Floor, Boston, Massachusetts 02109, and at any adjournments thereof, upon matters set forth in the Notice of of Annual Meeting of Stockholders and Proxy Statement dated April 30, 1998, a copy of which has been received by the undersigned. Execution of a proxy will not in any way affect a stockholder's right to attend the meeting and vote in person. The proxies are further authorized to vote, in their discretion, upon such other business as may properly come before the meeting or any adjournments thereof. THE SHARES REPRESENTED BY THIS PROXY WILL BE VOTED AS DIRECTED OR, IF NO DIRECTION IS GIVEN, WILL BE VOTED "FOR" THE ELECTION OF DIRECTORS AND IN THE MANNER DIRECTED BY THE BOARD OF DIRECTORS WITH RESPECT TO ANY OTHER MATTER PROPERLY BROUGHT BEGFORE THE ANNUAL MEETING. SEE REVERSE SIDE The Board of Directors Recommends a vote FOR Proposals 1 and 2. Please mark your votes as indicated [ X ] in this example. [ ] To vote for all items AS RECOMMENDED BY THE BOARD OF DIRECTORS, mark this box, sign, date and return this Proxy. (No additional vote necessary.) 1. To elect two members to the Board of Directors, FOR WITHHELD each to serve for a three-year term as a Class [ ] [ ] I Director: Nominees: Paul C. O'Brien and James L. Zucco, Jr. For all nominees except as noted below - ----------------------------- 2. In their discretion, the proxies FOR AGAINST ABSTAIN are authorized to vote upon such [ ] [ ] [ ] other business as may properly come before the Annual Meeting or any adjournment or postponement thereof including without limitation a motion to adjourn the Annual Meeting. - ------------------------------ MARK HERE FOR ADDRESS [ ] - ------------------------------ CHANGE AND NOTE AT LEFT - ------------------------------ MARK HERE IF YOU PLAN TO [ ] ATTEND THE MEETING Date -------------------------, 1998 ----------------------------------- SIGNATURE ----------------------------------- SIGNATURE IF HELD JOINTLY NOTE: If signing as attorney, executor, trustee or guardian, please give your full title as such. If stock is held jointly, each owner should sign. Two new ways to vote Vote by Telephone Vote by Internet It's fast, convenient, and It's fast, convenient, and your vote is immediately your vote is immediately confirmed and posted. confirmed and posted. Using a touch-tone phone call the toll-free number WWW.PROXYVOTE.COM shown on the voting instruction form. Just follow these 4 easy steps: Just follow these 4 easy steps: 1. Ready the accompanying Proxy 1. Read the accompanying Proxy Statement and voting in- Statement and voting in- struction form. struction form. 2. Call the toll-free number 2. Call the toll-free number shown on your voting in- shown on your voting in- struction form. struction form. 3. Enter your 12 digit Control 3. Enter your 12 digit Control Number located on your Number located on your voting instruction form. voting instruction form. 4. Follow the simple recorded 4. Follow the simple recorded instructions. instructions. Your vote is important! Your vote is important! Do not return Voting Form if you are voting by telephone or Internet.