diff --git a/src/functions.sh b/src/functions.sh
index 9ece872..dd0c346 100644
--- a/src/functions.sh
+++ b/src/functions.sh
@@ -9,7 +9,7 @@ random_password() {
 }
 
 generate_dhparam() {
-    openssl dhparam -out /etc/nginx/dhparam.pem 2048
+    openssl dhparam -dsaparam -out /etc/nginx/dhparam.pem 2048
     cat << EOF > /etc/cron.monthly/generate-dhparams
 #!/bin/bash
 openssl dhparam -out /etc/nginx/dhparam.gen 4096 > /dev/null 2>&1
@@ -27,5 +27,26 @@ apt_repo() {
 
     wget -q -O - ${apt_key_url} | gpg --dearmor -o ${apt_key_path}
     echo "deb [signed-by=${apt_key_path}] ${apt_repo_url}" > /etc/apt/sources.list.d/${apt_name}.list
-
-}
\ No newline at end of file
+}
+#### Set repo and install Nginx ####
+inst_nginx() {
+    apt_repo "nginx" "https://nginx.org/keys/nginx_signing.key" "http://nginx.org/packages/mainline/debian $(lsb_release -cs) nginx"
+    apt update && DEBIAN_FRONTEND=noninteractive DEBIAN_PRIORITY=critical apt install -y -qq --no-install-recommends nginx
+}
+#### Set repo and install PHP ####
+inst_php() {
+    curl -sSLo /usr/share/keyrings/sury_php.gpg https://packages.sury.org/php/apt.gpg
+    echo "deb [signed-by=/usr/share/keyrings/sury_php.gpg] https://packages.sury.org/php/ $(lsb_release -sc) main" > /etc/apt/sources.list.d/sury_php.list
+    apt update && DEBIAN_FRONTEND=noninteractive DEBIAN_PRIORITY=critical apt install -y -qq --no-install-recommends php-common php$NEXTCLOUD_PHP_VERSION-{fpm,gd,curl,pgsql,xml,zip,intl,mbstring,bz2,ldap,apcu,bcmath,gmp,imagick,igbinary,mysql,redis,smbclient,sqlite3,cli,common,opcache,readline}
+}
+#### Set repo and install Postgresql ####
+inst_postgresql() {
+    apt_repo "postgresql" "https://www.postgresql.org/media/keys/ACCC4CF8.asc" "http://apt.postgresql.org/pub/repos/apt $(lsb_release -cs)-pgdg main"
+    apt update && DEBIAN_FRONTEND=noninteractive DEBIAN_PRIORITY=critical apt install -y -qq --no-install-recommends postgresql-$POSTGRES_VERSION
+}
+#### Set repo and install Crowdsec ####
+inst_crowdsec() {
+    apt_repo "crowdsec" "https://packagecloud.io/crowdsec/crowdsec/gpgkey" " https://packagecloud.io/crowdsec/crowdsec/any any main"
+    apt update && DEBIAN_FRONTEND=noninteractive DEBIAN_PRIORITY=critical apt install -y -qq --no-install-recommends crowdsec
+    DEBIAN_FRONTEND=noninteractive DEBIAN_PRIORITY=critical apt install -y -qq --no-install-recommends crowdsec-firewall-bouncer-nftables
+}