TCP traceroute with different hop counts

["Sriram Rajan" <sriram.r () vit in>]

Hi Dev,
Why does the same nmap command give single hop entry on successive execution ?
sudo nmap -T4 -PE -R -PS21,22,23,25,80,113,31339 -PA80,113,4^M443,10042 --source-port 53 --traceroute 54.209.104.1
First Output:
TRACEROUTE (using port 8080/tcp)
HOP RTT       ADDRESS
1   3.97 ms   180.179.168.99
2   3.95 ms   180.179.165.9
3   8.74 ms   180.179.167.1
4   26.64 ms  aes-static-137.126.17.125.airtel.in (125.17.126.137)
5   28.35 ms  aes-static-137.126.17.125.airtel.in (125.17.126.137)
6   266.48 ms paix01-sfo4.amazon.com (198.32.176.36)
7   260.61 ms paix01-sfo4.amazon.com (198.32.176.36)
8   260.58 ms 205.251.229.54
9   270.35 ms 178.236.3.24
10  278.25 ms 72.21.220.45
11  265.28 ms 205.251.244.6
12  265.19 ms 72.21.222.149
13  269.72 ms 72.21.222.149
14  263.01 ms 72.21.220.53
15  258.38 ms ec2-54-209-104-1.compute-1.amazonaws.com (54.209.104.1)
Nmap done: 1 IP address (1 host up) scanned in 15.50 seconds
Output from 2nd Execution:
        TRACEROUTE (using port 113/tcp) HOP RTT ADDRESS 1 2.68 ms ec2-54-209-104-1.compute-1.amazonaws.com 
(54.209.104.1)

        Thanks,

        Sriram

Attachment: tcp_traceroute_1_10.txt
Description:

_______________________________________________
Sent through the dev mailing list
http://nmap.org/mailman/listinfo/dev
Archived at http://seclists.org/nmap-dev/