How to Install the MetaDefender ICAP Server on Debian 9?

Symptom of install failure

When you install ICAP Server on Debian 9 you may get the following error message:

dpkg: dependency problems prevent configuration of mdicapsrv:

 mdicapsrv depends on libssll.O.O (>= 1.0.0); however:

  Package libssll.0.0 is not installed.

Reason

By default, Debian 9 is installed with libssl1.0.2. For compatibility reasons OPSWAT products require libssl1.0.0. libssl1.0.0 is, however, only available in Debian 8 repositories, and is not available for Debian 9.

Resolution

To install libssl1.0.0 on Debian 9 from a Debian 8 repository perform the following steps:

1. Open https://packages.debian.org/jessie/libssl1.0.0 in your browser

2. In the "Downloads" section, at the bottom of the page, select your server's architecture
3. Select a mirror (http://security.debian.org/debian-security in the example) and download the package

# wget http://security.debian.org/debian-security/pool/updates/main/o/openssl/libssl1.0.0_1.0.1t-1+deb8u12_amd64.deb

4. Install the downloaded package

# dpkg —i libssl1.0.0_1.0.1t-1+deb8u12_amd64.deb

5. Clean-up the previous broken ICAP Server installation (optional)

# apt --fix-broken install

6. Re-install ICAP Server

# dpkg -i mdicapsrv_4.7.0-1_amd64.deb