Update gateway_UDP.sh

deNBI · Jan 15, 2024 · 47c779a · 47c779a
1 parent 41c54bb
commit 47c779a
Showing 1 changed file with 11 additions and 9 deletions.
diff --git a/scripts/gateway/gateway_UDP.sh b/scripts/gateway/gateway_UDP.sh
@@ -2,19 +2,21 @@
 
 # get local ip from meta data server
 LOCALIP=$(curl http://169.254.169.254/latest/meta-data/local-ipv4)
-LOCALNET=$( echo ${LOCALIP} | cut -f 1-3 -d".")
+LOCALNET=$( echo ${LOCALIP} | cut -f 1-2 -d".")
 
 #ip forwarding rules
+      	for ((base=0; base <=8; base++))
+      			  {
 for ((n=1; n <=254; n++))
         {
-        MOSH_BASE=$((30000+$n*10))
+        MOSH_BASE=$((30000+$n + base *256))
+
+
+                        MOSH_PORT=$(($MOSH_BASE))
+                        echo ${MOSH_PORT}
+                        iptables -t nat -A PREROUTING -i ens3 -p udp -m udp --dport ${MOSH_PORT} -j DNAT --to-destination ${LOCALNET}.${base}.${n}:${MOSH_PORT}
+                        iptables -t nat -A POSTROUTING -d ${LOCALNET}.${base}.${n}/32 -p udp -m udp --dport ${MOSH_PORT} -j SNAT --to-source ${LOCALIP}
 
-        for ((m=0; m<=9; m++))
-                {
-                        MOSH_PORT=$(($MOSH_BASE+$m))
-                        #$echo ${MOSH_PORT}
-                        iptables -t nat -A PREROUTING -i ens3 -p udp -m udp --dport ${MOSH_PORT} -j DNAT --to-destination ${LOCALNET}.${n}:${MOSH_PORT}
-                        iptables -t nat -A POSTROUTING -d ${LOCALNET}.${n}/32 -p udp -m udp --dport ${MOSH_PORT} -j SNAT --to-source ${LOCALIP}
-                }
 
         }
+}