Installing

apt update
apt install -y software-properties-common apt-transport-https ca-certificates
wget -q https://packages.sury.org/php/apt.gpg -O- | sudo gpg --dearmor -o /usr/share/keyrings/php.gpg
echo "deb [signed-by=/usr/share/keyrings/php.gpg] https://packages.sury.org/php/ $(lsb_release -sc) main" | sudo tee /etc/apt/sources.list.d/php.list
apt update
apt install -y gpg slapd

gpg --keyserver keys.openpgp.org --recv-key 0xFE0FEAE5AC483A86
gpg --export -a "FusionDirectory Packages Signing Key <contact@fusiondirectory.org>" > FD-archive-key
apt-key add FD-archive-key
apt update

#fusiondirectory integrator
deb https://public.fusiondirectory.org/debian/fusiondirectory-integrator/ bullseye main
#fusiondirectory utilities
deb https://public.fusiondirectory.org/debian/fusiondirectory-utilities/ bullseye main
#fusiondirectory tools
deb https://public.fusiondirectory.org/debian/fusiondirectory-tools/ bullseye main
#fusiondirectory libraries
deb https://public.fusiondirectory.org/debian/fusiondirectory-external-libraries/ bullseye main
#fusiondirectory repository
deb https://public.fusiondirectory.org/debian/bullseye-fusiondirectory-release/ bullseye main

apt install -y php7.4-common php7.4-ldap php7.4-xml php-cas php7.4-gd php7.4-curl \
php-fpdf php7.4-imagick php7.4-imap php7.4-mbstring php-gettext-languages php8.4-ldap

apt install libapache2-mod-php7.4
a2enmod php7.4
a2dismod php8.3
a2dismod php7.3

systemctl restart apache2

apt-get install fusiondirectory
apt-get install fusiondirectory-schema fusiondirectory-plugin-mail-schema
apt install fusiondirectory-plugin-mail
apt install php-ldap php-mbstring php-xml php-curl php-json php-openssl php-zlib
apt install php-ldap php-mbstring php-xml php-curl php-json
apt-get install fusiondirectory-plugin-dsa fusiondirectory-plugin-dsa-schema

fusiondirectory-schema-manager --insert-schema /etc/ldap/schema/fusiondirectory/core-fd.schema
fusiondirectory-schema-manager --insert-schema /etc/ldap/schema/fusiondirectory/core-fd-conf.schema
fusiondirectory-schema-manager --insert-schema /etc/ldap/schema/fusiondirectory/ldapns.schema
fusiondirectory-schema-manager --insert-schema /etc/ldap/schema/fusiondirectory/template-fd.schema
fusiondirectory-schema-manager --insert-schema /etc/ldap/schema/fusiondirectory/mail-fd.schema
fusiondirectory-schema-manager --insert-schema /etc/ldap/schema/fusiondirectory/mail-fd-conf.schema
fusiondirectory-schema-manager --insert-schema /etc/ldap/schema/fusiondirectory/dsa-fd-conf.schema

systemctl restart apache2 slapd

go to http://SERVER-IP/fusiondirectory

do your config....

apt install curl gpg
curl https://ltb-project.org/documentation/_static/RPM-GPG-KEY-LTB-project | gpg --dearmor > /usr/share/keyrings/ltb-project-openldap-archive-keyring.gpg
wget -O - https://ltb-project.org/documentation/_static/RPM-GPG-KEY-LTB-project | gpg --dearmor | sudo tee /usr/share/keyrings/ltb-project.gpg >/dev/null

deb [arch=amd64 signed-by=/usr/share/keyrings/ltb-project-openldap-archive-keyring.gpg] https://ltb-project.org/debian/openldap26/bookworm bookworm main
deb [arch=amd64 signed-by=/usr/share/keyrings/ltb-project.gpg] https://ltb-project.org/debian/stable stable main

apt update
apt install openldap-ltb openldap-ltb-contrib-overlays openldap-ltb-mdb-utils self-service-password