From 7ee5db4120f8eb90688b09520e62501b51f1dae7 Mon Sep 17 00:00:00 2001
From: David Westgate <djw2@pdx.edu>
Date: Thu, 13 Jun 2024 02:52:53 -0700
Subject: [PATCH] ttl script

---
 final/scripts/ttl.py | 17 +++++++++++------
 1 file changed, 11 insertions(+), 6 deletions(-)

diff --git a/final/scripts/ttl.py b/final/scripts/ttl.py
index 0a773a9..46d5c2d 100644
--- a/final/scripts/ttl.py
+++ b/final/scripts/ttl.py
@@ -1,10 +1,11 @@
 import sys
-from scapy.all import sniff, send, IP, IPv6
+from scapy.all import sniff, send, IP, IPv6, Packet, Raw, Ether, sendp
 from datetime import datetime
 
-modifications = 0
 
-def modify_packet(packet):
+def modify_packet(packet: Packet):
+    global modifications
+    global seen
     if packet.haslayer(IP):
         if packet[IP].ttl != 65:
             packet[IP].ttl = 65
@@ -13,11 +14,14 @@ def modify_packet(packet):
         if packet[IPv6].ttl != 65:
             packet[IPv6].ttl = 65
             modifications += 1
+    seen += 1
     #Can be extented with other protocols which have TTL
-    send(packet)
+    sendp(packet, iface=sys.argv[1])
 
 
 if __name__ == "__main__":
+    modifications = 0
+    seen = 0
     if len(sys.argv) != 2:
         print(f"Usage: {sys.argv[0]} <interface>")
         sys.exit(1)
@@ -27,8 +31,9 @@ if __name__ == "__main__":
     start_time = datetime.now()
     print(f"Script started at: {start_time.strftime('%Y-%m-%d %H:%M:%S')}")
 
-    packets = sniff(filter="ip or ipv6", iface=interface, timeout=30*1, prn=modify_packet)
+    packets = sniff(filter="ip or ip6", iface=interface, timeout=2.5*1, prn=modify_packet)
 
     end_time = datetime.now()
     print(f"Script ended at: {end_time.strftime('%Y-%m-%d %H:%M:%S')}")
-    print(f"{modifications} packets modified")
\ No newline at end of file
+    print(f"{modifications} ip(v6) packets modified")
+    print(f"{seen} total ip(v6) packets seen")
\ No newline at end of file