diff --git a/CONFIG.sh b/CONFIG.sh
index 9d70519..b503e51 100644
--- a/CONFIG.sh
+++ b/CONFIG.sh
@@ -1,4 +1,6 @@
-alias s="sudo systemctl"
+function s() {
+    sudo systemctl "$@"
+}
 
 function instalar() {
     yum list installed "$1" &>/dev/null && echo "$1 já instalado" || sudo yum install -y "$1"
diff --git a/FIREWALL.sh b/FIREWALL.sh
index 8d9e439..80894c4 100644
--- a/FIREWALL.sh
+++ b/FIREWALL.sh
@@ -9,7 +9,7 @@ sudo ifconfig enp0s8 $IP_EXTERNAL netmask 255.255.255.0
 sudo ifconfig enp0s9 $IP_INTERNAL netmask 255.255.255.0
 
 # instalar mod security e apache
-instalar epel_release
+instalar epel-release
 instalar httpd
 instalar mod_security
 instalar mod_security_crs
@@ -23,4 +23,5 @@ sudo iptables -A FORWARD -i enp0s8 -o enp0s9 -m state --state ESTABLISHED,RELATE
 sudo iptables -t nat -A POSTROUTING -o enp0s8 -j MASQUERADE
 sudo iptables-save > /etc/sysconfig/iptables
 
-cp conf/httpd.conf /etc/httpd/httpd.conf 
+sudo cp conf/httpd.conf /etc/httpd/httpd.conf
+ 
diff --git a/WEB_SERVER.sh b/WEB_SERVER.sh
index 0a6f656..eeee716 100644
--- a/WEB_SERVER.sh
+++ b/WEB_SERVER.sh
@@ -2,27 +2,34 @@
 
 source CONFIG.sh
 
+# instalar packages
+if ! command -v node &> /dev/null || [[ "$(node -v)" != v24.* ]]; then
+    echo "Configurando repositório do Node.js 24..."
+    curl -fsSL https://rpm.nodesource.com/setup_24.x | sudo bash -
+    sudo yum remove -y nodejs
+fi
+instalar nodejs
+
+# instalar juice-shop se nao existir
+jspath="/var/juice-shop"
+if [[ ! -f "$jspath/package.json" ]]; then
+    sudo mkdir -p "$jspath"
+    curl -L -o js.tar.gz "https://github.com/juice-shop/juice-shop/releases/download/v20.0.0/juice-shop-20.0.0_node24_linux_x64.tgz"
+    sudo tar -xzvf js.tar.gz -C "$jspath" --strip-components=1
+    rm js.tar.gz
+    sudo chown -R $USER:$USER "$jspath"
+fi
+
+# fazer so depois de instalar tudo
+ativar_firewall
+
 # interfaces
 IP="10.60.0.2"
 sudo ifconfig enp0s8 $IP netmask 255.255.255.0
 sudo route add default gw 10.60.0.1
 
-# instalar packages
-instalar nodejs
-
-# instalar juice-shop se nao existir
-jspath="/var/juice-shop"
-if [[ ! -d "$jspath" ]]; then
-    mkdir "$jspath"
-	curl -o js.tar.gz "https://github.com/juice-shop/juice-shop/releases/download/v20.0.0/juice-shop-20.0.0_node24_linux_x64.tgz"
-	tar -xzvf js.tar.gz "$jspath"
-    rm js.tar.gz
-    cd "$jspath"
-    npm i
-fi
-
-# fazer so depois de instalar tudo
-ativar_firewall
 
 # correr juice shop via npm
+cd "$jspath"
 npm start
+