The mission of the Vermont Department of Taxes is to collect the proper amount of tax revenue in a timely and efficient manner to pay for the goods and services people receive from State government; administer benefit programs through the most efficient means possible; serve local governments by striving to improve local property tax assessment practices; to assist and service taxpayers, legislators and all other by any means possible.

The department's information systems section maintains open source tax software (gateway) that provides several SOAP web services. One of the services in development (Modernized eFile) allows file attachments. We take security seriously and we wouldn't be doing our job if we didn't scan those attachments for viruses. In less than an hour, we developed a proof of concept virus scanner web service with NuSOAP and PHP ClamAV Lib. The project is open source and available here.

The department also maintains an ftps server running vsftpd. We wanted to automatically scan incoming files for viruses, delete them if they contained a virus and notify an administrator via e-mail. In a short amount of time we created inoclam, a mashup of inotify and libclamav. The libclamav API is simple, well documented and easy to use.

The clamav community has been very informative and helpful.

-- TomCort - 28 Dec 2007

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