diff --git a/ipsec/adduser.sh b/ipsec/adduser.sh
index 65d4708..7f74ab3 100755
--- a/ipsec/adduser.sh
+++ b/ipsec/adduser.sh
@@ -45,6 +45,9 @@ do
 			if [[ $# -gt 0 ]]; then
 				# exit, if script is called with params
 				ANSUSER=$NOTADDUSER
+			else
+				read -p "Would you want to add another user? [no] " ANSUSER
+				: ${ANSUSER:=$NOTADDUSER}
 			fi
 			continue
 		else
@@ -65,28 +68,28 @@ do
 
 	mkdir -p "$STARTDIR/$LOGIN"
 	DISTFILE=$STARTDIR/$LOGIN/setup.sh
-	cp -rf setup.sh.dist "$DISTFILE"
+	cp -rf $DIR/setup.sh.dist "$DISTFILE"
 	sed -i -e "s@_PSK_@$PSK@g" "$DISTFILE"
 	sed -i -e "s@_SERVERLOCALIP_@$LOCALPREFIX.0.1@g" "$DISTFILE"
 
 	DISTFILE=$STARTDIR/$LOGIN/ipsec.conf
-	cp -rf ipsec.conf.dist "$DISTFILE"
+	cp -rf $DIR/ipsec.conf.dist "$DISTFILE"
 	sed -i -e "s@LEFTIP@%any@g" "$DISTFILE"
 	sed -i -e "s@LEFTPORT@%any@g" "$DISTFILE"
 	sed -i -e "s@RIGHTIP@$IP@g" "$DISTFILE"
 	sed -i -e "s@RIGHTPORT@1701@g" "$DISTFILE"
 
 	DISTFILE=$STARTDIR/$LOGIN/xl2tpd.conf
-	cp -rf client-xl2tpd.conf.dist "$DISTFILE"
+	cp -rf $DIR/client-xl2tpd.conf.dist "$DISTFILE"
 	sed -i -e "s@REMOTEIP@$IP@g" "$DISTFILE"
 
 	DISTFILE=$STARTDIR/$LOGIN/options.xl2tpd
-	cp -rf client-options.xl2tpd.dist "$DISTFILE"
+	cp -rf $DIR/client-options.xl2tpd.dist "$DISTFILE"
 	sed -i -e "s@_LOGIN_@$LOGIN@g" "$DISTFILE"
 	sed -i -e "s@_PASSWORD_@$PASSWORD@g" "$DISTFILE"
 
-	cp -rf connect.sh.dist "$STARTDIR/$LOGIN/connect.sh"
-	cp -rf disconnect.sh.dist "$STARTDIR/$LOGIN/disconnect.sh"
+	cp -rf $DIR/connect.sh.dist "$STARTDIR/$LOGIN/connect.sh"
+	cp -rf $DIR/disconnect.sh.dist "$STARTDIR/$LOGIN/disconnect.sh"
 
 	chmod +x "$STARTDIR/$LOGIN/setup.sh" "$STARTDIR/$LOGIN/connect.sh" "$STARTDIR/$LOGIN/disconnect.sh"
 
diff --git a/ipsec/env.sh b/ipsec/env.sh
index 05eb34a..21e23df 100755
--- a/ipsec/env.sh
+++ b/ipsec/env.sh
@@ -1,5 +1,16 @@
 #!/usr/bin/env bash
 
+DEBIANPLATFORM="DEBIAN"
+CENTOSPLATFORM="CENTOS"
+
+if [[ -e /etc/version ]]; then
+	PLATFORM=$DEBIANPLATFORM
+fi
+
+if [[ -e /etc/issue ]]; then
+	PLATFORM=$CENTOSPLATFORM
+fi
+
 SYSCTLCONFIG=/etc/sysctl.conf
 IPSECCONFIG=/etc/ipsec.conf
 XL2TPDCONFIG=/etc/xl2tpd/xl2tpd.conf
@@ -9,6 +20,11 @@ IPTABLES=/etc/iptables.rules
 SECRETSFILE=/etc/ipsec.secrets
 CHECKSERVER=/etc/xl2tpd/checkserver.sh
 
+if [ "$PLATFORM" == "$CENTOSPLATFORM" ]; then
+	SECRETSFILE=/etc/strongswan/ipsec.secrets
+	IPSECCONFIG=/etc/strongswan/ipsec.conf
+fi
+
 LOCALPREFIX="172.18"
 LOCALIP="$LOCALPREFIX.0.0"
 LOCALMASK="/24"
diff --git a/ipsec/install.sh b/ipsec/install.sh
index d0a6929..cf9d731 100755
--- a/ipsec/install.sh
+++ b/ipsec/install.sh
@@ -10,7 +10,13 @@ fi
 
 echo
 echo "Installing strongSwan and xl2tp server..."
-apt-get -y install strongswan xl2tpd cron iptables procps net-tools
+if [ "$PLATFORM" == "$DEBIANPLATFORM" ]; then
+	apt-get -y install strongswan xl2tpd cron iptables procps net-tools
+fi
+if [ "$PLATFORM" == "$CENTOSPLATFORM" ]; then
+	yum -y install epel-release
+	yum -y install strongswan xl2tpd cronie iptables-services procps net-tools
+fi
 
 echo
 echo "Configuring routing..."
diff --git a/ipsec/iptables-setup.sh b/ipsec/iptables-setup.sh
index 200ec95..a8a8fb6 100755
--- a/ipsec/iptables-setup.sh
+++ b/ipsec/iptables-setup.sh
@@ -3,6 +3,13 @@
 DIR=$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )
 source $DIR/env.sh
 
+if [ "$PLATFORM" == "$CENTOSPLATFORM" ]; then
+	systemctl enable iptables
+	systemctl stop firewalld
+	systemctl disable firewalld
+	systemctl start iptables
+fi
+
 COMMENT=" -m comment --comment \"IPSEC\""
 
 if [[ ! -e $IPTABLES ]]; then
@@ -28,7 +35,7 @@ done
 
 # detect default gateway interface
 echo "Found next network interfaces:"
-ifconfig -a | sed 's/[ \t].*//;/^\(lo\|\)$/d'
+ifconfig -a | sed 's/[: \t].*//;/^\(lo\|\)$/d'
 echo
 GATE=$(route | grep '^default' | grep -o '[^ ]*$')
 read -p "Enter your external network interface: " -i $GATE -e GATE
diff --git a/ipsec/sysctl.sh b/ipsec/sysctl.sh
index 440118a..aa3bdf8 100755
--- a/ipsec/sysctl.sh
+++ b/ipsec/sysctl.sh
@@ -30,4 +30,9 @@ sed -i -e "/net.ipv4.icmp_ignore_bogus_error_responses/d" $SYSCTLCONFIG
 echo "net.ipv4.icmp_ignore_bogus_error_responses=1" >> $SYSCTLCONFIG
 
 sysctl -p
-service procps restart
+if [ "$PLATFORM" == "$DEBIANPLATFORM" ]; then
+	service procps restart
+fi
+if [ "$PLATFORM" == "$CENTOSPLATFORM" ]; then
+	service network restart
+fi
diff --git a/openvpn/env.sh b/openvpn/env.sh
index 0ad5932..8c70755 100755
--- a/openvpn/env.sh
+++ b/openvpn/env.sh
@@ -1,5 +1,16 @@
 #!/usr/bin/env bash
 
+DEBIANPLATFORM="DEBIAN"
+CENTOSPLATFORM="CENTOS"
+
+if [[ -e /etc/version ]]; then
+	PLATFORM=$DEBIANPLATFORM
+fi
+
+if [[ -e /etc/issue ]]; then
+	PLATFORM=$CENTOSPLATFORM
+fi
+
 SYSCTLCONFIG=/etc/sysctl.conf
 OPENVPNDIR=/etc/openvpn
 OPENVPNCONFIG=$OPENVPNDIR/openvpn-server.conf
@@ -8,6 +19,10 @@ IPTABLES=/etc/iptables.rules
 NOBODYGROUP=nogroup
 CHECKSERVER=$OPENVPNDIR/checkserver.sh
 
+if [ "$PLATFORM" == "$CENTOSPLATFORM" ]; then
+	NOBODYGROUP=nobody
+fi
+
 LOCALPREFIX="172.20"
 LOCALIP="$LOCALPREFIX.0.0"
 LOCALMASK="/24"
diff --git a/openvpn/install.sh b/openvpn/install.sh
index 38b8a5a..bc81adf 100755
--- a/openvpn/install.sh
+++ b/openvpn/install.sh
@@ -12,7 +12,13 @@ fi
 
 echo
 echo "Installing OpenVPN..."
-apt-get -y install openvpn easy-rsa cron iptables procps net-tools
+if [ "$PLATFORM" == "$DEBIANPLATFORM" ]; then
+	apt-get -y install openvpn easy-rsa cron iptables procps net-tools
+fi
+if [ "$PLATFORM" == "$CENTOSPLATFORM" ]; then
+	yum -y install epel-release
+	yum -y install openvpn easy-rsa cronie iptables-services procps net-tools
+fi
 
 echo
 echo "Configuring routing..."
@@ -40,7 +46,13 @@ cp -n /etc/openvpn/easy-rsa/openssl-1.0.0.cnf /etc/openvpn/easy-rsa/openssl.cnf
 
 echo
 echo "Creating server keys..."
-make-cadir $CADIR
+if [ "$PLATFORM" == "$CENTOSPLATFORM" ]; then
+	mkdir -p "$CADIR/keys"
+	cp -rf /usr/share/easy-rsa/2.0/* $CADIR
+fi
+if [ "$PLATFORM" == "$DEBIANPLATFORM" ]; then
+	make-cadir $CADIR
+fi
 cd $CADIR
 source ./vars
 ./clean-all
diff --git a/openvpn/iptables-setup.sh b/openvpn/iptables-setup.sh
index 5107462..ca9e6df 100755
--- a/openvpn/iptables-setup.sh
+++ b/openvpn/iptables-setup.sh
@@ -1,8 +1,15 @@
 #!/usr/bin/env bash
 
-DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
+DIR=$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )
 source $DIR/env.sh
 
+if [ "$PLATFORM" == "$CENTOSPLATFORM" ]; then
+	systemctl enable iptables
+	systemctl stop firewalld
+	systemctl disable firewalld
+	systemctl start iptables
+fi
+
 COMMENT=" -m comment --comment \"OPENVPN\""
 
 if [[ ! -e $IPTABLES ]]; then
@@ -28,7 +35,7 @@ done
 
 # detect default gateway interface
 echo "Found next network interfaces:"
-ifconfig -a | sed 's/[ \t].*//;/^\(lo\|\)$/d'
+ifconfig -a | sed 's/[: \t].*//;/^\(lo\|\)$/d'
 echo
 GATE=$(route | grep '^default' | grep -o '[^ ]*$')
 read -p "Enter your external network interface: " -i $GATE -e GATE
diff --git a/openvpn/sysctl.sh b/openvpn/sysctl.sh
index 440118a..aa3bdf8 100755
--- a/openvpn/sysctl.sh
+++ b/openvpn/sysctl.sh
@@ -30,4 +30,9 @@ sed -i -e "/net.ipv4.icmp_ignore_bogus_error_responses/d" $SYSCTLCONFIG
 echo "net.ipv4.icmp_ignore_bogus_error_responses=1" >> $SYSCTLCONFIG
 
 sysctl -p
-service procps restart
+if [ "$PLATFORM" == "$DEBIANPLATFORM" ]; then
+	service procps restart
+fi
+if [ "$PLATFORM" == "$CENTOSPLATFORM" ]; then
+	service network restart
+fi
diff --git a/pptp/adduser.sh b/pptp/adduser.sh
index a79ddd5..030b675 100755
--- a/pptp/adduser.sh
+++ b/pptp/adduser.sh
@@ -45,6 +45,9 @@ do
 			if [[ $# -gt 0 ]]; then
 				# exit, if script is called with params
 				ANSUSER=$NOTADDUSER
+			else
+				read -p "Would you want to add another user? [no] " ANSUSER
+				: ${ANSUSER:=$NOTADDUSER}
 			fi
 			continue
 		else
@@ -63,7 +66,7 @@ do
 
 	mkdir -p "$STARTDIR/$LOGIN"
 	DISTFILE=$STARTDIR/$LOGIN/setup.sh
-	cp -rf setup.sh.dist "$DISTFILE"
+	cp -rf $DIR/setup.sh.dist "$DISTFILE"
 	sed -i -e "s@_LOGIN_@$LOGIN@g" "$DISTFILE"
 	sed -i -e "s@_PASSWORD_@$PASSWORD@g" "$DISTFILE"
 	sed -i -e "s@_REMOTEIP_@$IP@g" "$DISTFILE"
diff --git a/pptp/env.sh b/pptp/env.sh
index 86ed6fb..ae0d6c9 100755
--- a/pptp/env.sh
+++ b/pptp/env.sh
@@ -1,5 +1,16 @@
 #!/usr/bin/env bash
 
+DEBIANPLATFORM="DEBIAN"
+CENTOSPLATFORM="CENTOS"
+
+if [[ -e /etc/version ]]; then
+	PLATFORM=$DEBIANPLATFORM
+fi
+
+if [[ -e /etc/issue ]]; then
+	PLATFORM=$CENTOSPLATFORM
+fi
+
 SYSCTLCONFIG=/etc/sysctl.conf
 PPTPDCONFIG=/etc/pptpd.conf
 PPTPOPTIONS=/etc/ppp/options.pptp
diff --git a/pptp/install.sh b/pptp/install.sh
index 86605a5..3cdd002 100755
--- a/pptp/install.sh
+++ b/pptp/install.sh
@@ -10,7 +10,13 @@ fi
 
 echo
 echo "Installing PPTP server..."
-apt-get -y install pptpd cron iptables procps net-tools
+if [ "$PLATFORM" == "$DEBIANPLATFORM" ]; then
+	apt-get -y install pptpd cron iptables procps net-tools
+fi
+if [ "$PLATFORM" == "$CENTOSPLATFORM" ]; then
+	yum -y install epel-release
+	yum -y install ppp pptpd cronie iptables-services procps net-tools
+fi
 
 ADDUSER="no"
 ANSUSER="yes"
diff --git a/pptp/iptables-setup.sh b/pptp/iptables-setup.sh
index bd0982f..ca21772 100755
--- a/pptp/iptables-setup.sh
+++ b/pptp/iptables-setup.sh
@@ -3,6 +3,13 @@
 DIR=$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )
 source $DIR/env.sh
 
+if [ "$PLATFORM" == "$CENTOSPLATFORM" ]; then
+	systemctl enable iptables
+	systemctl stop firewalld
+	systemctl disable firewalld
+	systemctl start iptables
+fi
+
 COMMENT=" -m comment --comment \"PPTP\""
 
 if [[ ! -e $IPTABLES ]]; then
@@ -28,7 +35,7 @@ done
 
 # detect default gateway interface
 echo "Found next network interfaces:"
-ifconfig -a | sed 's/[ \t].*//;/^\(lo\|\)$/d'
+ifconfig -a | sed 's/[: \t].*//;/^\(lo\|\)$/d'
 echo
 GATE=$(route | grep '^default' | grep -o '[^ ]*$')
 read -p "Enter your external network interface: " -i $GATE -e GATE
diff --git a/pptp/sysctl.sh b/pptp/sysctl.sh
index 440118a..90aa824 100755
--- a/pptp/sysctl.sh
+++ b/pptp/sysctl.sh
@@ -30,4 +30,10 @@ sed -i -e "/net.ipv4.icmp_ignore_bogus_error_responses/d" $SYSCTLCONFIG
 echo "net.ipv4.icmp_ignore_bogus_error_responses=1" >> $SYSCTLCONFIG
 
 sysctl -p
-service procps restart
+if [ "$PLATFORM" == "$DEBIANPLATFORM" ]; then
+	service procps restart
+fi
+if [ "$PLATFORM" == "$CENTOSPLATFORM" ]; then
+	service network restart
+fi
+