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POCreating an ICMP traceroute in Python
 

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  1. POCreating an ICMP traceroute in Python
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    <p>I am trying to implement an ICMP based Traceroute in Python. I found a very helpful guide ( <a href="https://blogs.oracle.com/ksplice/entry/learning_by_doing_writing_your" rel="nofollow">https://blogs.oracle.com/ksplice/entry/learning_by_doing_writing_your</a> ) that has allowed me to create a UDP based Traceroute so just needs modification. However I have looked around and am having trouble changing the send socket and making it work. Is anybody able to assist me?</p> <pre><code> #!/usr/bin/python import socket def main(dest_name): dest_addr = socket.gethostbyname(dest_name) port = 33434 max_hops = 30 icmp = socket.getprotobyname('icmp') udp = socket.getprotobyname('udp') ttl = 1 while True: recv_socket = socket.socket(socket.AF_INET, socket.SOCK_RAW, icmp) send_socket = socket.socket(socket.AF_INET, socket.SOCK_DGRAM, udp) send_socket.setsockopt(socket.SOL_IP, socket.IP_TTL, ttl) recv_socket.bind(("", port)) send_socket.sendto("", (dest_name, port)) curr_addr = None curr_name = None try: _, curr_addr = recv_socket.recvfrom(512) curr_addr = curr_addr[0] try: curr_name = socket.gethostbyaddr(curr_addr)[0] except socket.error: curr_name = curr_addr except socket.error: pass finally: send_socket.close() recv_socket.close() if curr_addr is not None: curr_host = "%s (%s)" % (curr_name, curr_addr) else: curr_host = "*" print "%d\t%s" % (ttl, curr_host) ttl += 1 if curr_addr == dest_addr or ttl &amp;gt; max_hops: break if __name__ == "__main__": main('google.com') </code></pre>
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    1. USJamesla
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      1. POCreating an ICMP traceroute in Python
      1. USDan1676
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    1. COit's the **receiving** socket which causes an `operation not permitted` if you don't run this as root.
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      1. POCreating an ICMP traceroute in Python
      1. USAndre Holzner
    2. COwhich platform are you running this on ? Actually the article you refer to mentions `Because raw sockets require root privileges, traceroute is typically setuid. For our purposes, we can just run the script as root:`. However, it looks like e.g. on RHEL5, `traceroute` is NOT setuid root (see also http://traceroute.sourceforge.net/)
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      1. POCreating an ICMP traceroute in Python
      1. USAndre Holzner
    3. COYep running on Ubuntu and running as root, no problems with running it issues are with syntax at runtime
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      1. POCreating an ICMP traceroute in Python
      1. USJamesla
 

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