diff --git a/wireguard_client.sh b/wireguard_client.sh
old mode 100644
new mode 100755
diff --git a/wireguard_server.sh b/wireguard_server.sh
index c9cb2e8..5566c07 100644
--- a/wireguard_server.sh
+++ b/wireguard_server.sh
@@ -5,9 +5,10 @@ if [ "$(id -u)" -ne 0 ]; then
 	exit 1
 fi
 
-random_digits=$(LC_ALL=C tr -dc 0-9 </dev/urandom | head -c 4)
+random_digits=$(echo $RANDOM | cut -c 2-)
 server_port="5${random_digits}"
 interface="wg0"
+inet_interface="em0"
 config_file="/etc/wireguard/${interface}.conf"
 
 pkg_add wireguard-tools
@@ -38,9 +39,11 @@ EOF
 
 # pf
 cat >> /etc/pf.conf << EOF
+
+# wireguard
 pass in on ${interface}
 pass in inet proto udp from any to any port ${server_port}
-pass out on egress inet from (${interface}:network) nat-to (vio0:0)
+pass out on egress inet from (${interface}:network) nat-to (${inet_interface}:0)
 EOF
 
 sh /etc/netstart ${interface}