diff --git a/10-monitor-ppp-mtu.sh b/10-monitor-ppp-mtu.sh
old mode 100644
new mode 100755
diff --git a/11-change-ppp-mtu-debug.sh b/11-change-ppp-mtu-debug.sh
old mode 100644
new mode 100755
index 329db15..670acc2
--- a/11-change-ppp-mtu-debug.sh
+++ b/11-change-ppp-mtu-debug.sh
@@ -5,6 +5,7 @@
 MINTERFACES="(ppp0)"
 # Desired MTU of PPP interfaces
 PTARGET=1500
+SET_MSS=FALSE
 
 runningmtu=0
 restartpppd=0
@@ -82,6 +83,22 @@ while true; do
           fi
         fi
       done
+      
+      if [[ $SET_MSS ]]; then
+        echo "Checking if iptables MSS Value needs to be updated"
+        currentMSS=$(iptables -L -t mangle --line-numbers | grep -m 1 'SYN,RST/SYN TCPMSS' | sed 's/.*set \([0-9]\{4\}\).*/\1/')
+        targetMSS=$(($PTARGET-40))
+        if [[ $currentMSS -ne $targetMSS ]]; then
+            echo "Updating MSS from $currentMSS to $targetMSS"
+            while [[ $(iptables -L -t mangle --line-numbers | grep 'SYN,RST/SYN TCPMSS') ]]; do
+                iptables -t mangle -D UBIOS_FORWARD_TCPMSS 1
+            done
+            iptables -t mangle -A UBIOS_FORWARD_TCPMSS -p tcp --tcp-flags SYN,RST SYN -j TCPMSS --set-mss $targetMSS
+        else
+            echo "iptables already has correct MSS Value"
+        fi
+      fi
+      
       if [[ $restartpppd == 1 ]]; then
         echo Killing pppd
         killall -SIGHUP pppd
diff --git a/11-change-ppp-mtu.sh b/11-change-ppp-mtu.sh
old mode 100644
new mode 100755
index 28c489f..ae03db8
--- a/11-change-ppp-mtu.sh
+++ b/11-change-ppp-mtu.sh
@@ -5,6 +5,7 @@
 MINTERFACES="(ppp0)"
 # Desired MTU of PPP interfaces
 PTARGET=1500
+SET_MSS=false
 
 function check_mtu {
     ip link list | grep -E $MINTERFACES | grep 'mtu '$PTARGET > /dev/null
@@ -54,6 +55,20 @@ while true; do
           ip link set $pinterface mtu $PTARGET
         fi
       done
+      
+      if [[ $SET_MSS ]]; then
+        echo "Checking if iptables MSS Value needs to be updated"
+        currentMSS=$(iptables -L -t mangle --line-numbers | grep -m 1 'SYN,RST/SYN TCPMSS' | sed 's/.*set \([0-9]\{4\}\).*/\1/')
+        targetMSS=$(($PTARGET-40))
+        if [[ $currentMSS -ne $targetMSS ]]; then
+            echo "Updating MSS from $currentMSS to $targetMSS"
+            while [[ $(iptables -L -t mangle --line-numbers | grep 'SYN,RST/SYN TCPMSS') ]]; do
+                iptables -t mangle -D UBIOS_FORWARD_TCPMSS 1
+            done
+            iptables -t mangle -A UBIOS_FORWARD_TCPMSS -p tcp --tcp-flags SYN,RST SYN -j TCPMSS --set-mss $targetMSS
+        fi
+      fi
+      
       # Kill pppd to apply changes (it gets restarted automatically)
       # This does take down existing ppp links but as pppd comes straight back up, so should the links
       # Only kill pppd if there are ppp interfaces active and changes were made