Add MTU configuration options

conradgg · May 19, 2024 · e7ce129 · e7ce129
1 parent 006e8c1
commit e7ce129
Showing 1 changed file with 14 additions and 2 deletions.
diff --git a/wireguard-install.sh b/wireguard-install.sh
@@ -141,6 +141,15 @@ function installQuestions() {
 		read -rp "Server WireGuard port [1-65535]: " -e -i "${RANDOM_PORT}" SERVER_PORT
 	done
 
+	# Set MTU for the server and the clients
+	until [[ ${SERVER_MTU} =~ ^[0-9]+$ ]] && [ "${SERVER_MTU}" -ge 1200 ] && [ "${SERVER_MTU}" -le 1500 ]; do
+		read -rp "Server MTU [1200-1500]: " -e -i 1420 SERVER_MTU
+	done
+
+	until [[ ${CLIENT_MTU} =~ ^[0-9]+$ ]] && [ "${CLIENT_MTU}" -ge 1200 ] && [ "${CLIENT_MTU}" -le 1500 ]; do
+		read -rp "Client MTU [1200-1500]: " -e -i 1420 CLIENT_MTU
+	done
+
 	# Adguard DNS by default
 	until [[ ${CLIENT_DNS_1} =~ ^((25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$ ]]; do
 		read -rp "First DNS resolver to use for the clients: " -e -i 1.1.1.1 CLIENT_DNS_1
@@ -221,13 +230,15 @@ SERVER_PRIV_KEY=${SERVER_PRIV_KEY}
 SERVER_PUB_KEY=${SERVER_PUB_KEY}
 CLIENT_DNS_1=${CLIENT_DNS_1}
 CLIENT_DNS_2=${CLIENT_DNS_2}
-ALLOWED_IPS=${ALLOWED_IPS}" >/etc/wireguard/params
+ALLOWED_IPS=${ALLOWED_IPS}
+CLIENT_MTU=${CLIENT_MTU}" >/etc/wireguard/params
 
 	# Add server interface
 	echo "[Interface]
 Address = ${SERVER_WG_IPV4}/24,${SERVER_WG_IPV6}/64
 ListenPort = ${SERVER_PORT}
-PrivateKey = ${SERVER_PRIV_KEY}" >"/etc/wireguard/${SERVER_WG_NIC}.conf"
+PrivateKey = ${SERVER_PRIV_KEY}
+MTU = ${SERVER_MTU}" >"/etc/wireguard/${SERVER_WG_NIC}.conf"
 
 	if pgrep firewalld; then
 		FIREWALLD_IPV4_ADDRESS=$(echo "${SERVER_WG_IPV4}" | cut -d"." -f1-3)".0"
@@ -353,6 +364,7 @@ function newClient() {
 PrivateKey = ${CLIENT_PRIV_KEY}
 Address = ${CLIENT_WG_IPV4}/32,${CLIENT_WG_IPV6}/128
 DNS = ${CLIENT_DNS_1},${CLIENT_DNS_2}
+MTU = ${CLIENT_MTU}
 
 [Peer]
 PublicKey = ${SERVER_PUB_KEY}