https://community.checkpoint.com/t5/Scripts/Interactive-traceroute-script/m-p/269471#M1425 <P>This script lets you enter dst IP and port to show all the hops along the way.&nbsp;</P> <P>Lab example:</P> <P>&nbsp;</P> <P><BR />[Expert@CP-GW:0]# ./trace-explain-interactive.sh<BR />Enter destination IP or hostname: 8.8.8.8</P> <P>Choose protocol:<BR />1) ICMP (recommended when UDP is filtered)<BR />2) TCP SYN (port configurable; good for 80/443 allowed paths)<BR />3) UDP (classic traceroute)<BR />Enter choice number [1]: 3<BR />Enter destination UDP port [33434]: 4434<BR />Max hops (TTL) [30]:<BR />Perform reverse DNS lookups for each hop? (y/n) [y]:</P> <P>== Starting trace-explain ==<BR />Destination: 8.8.8.8<BR />Protocol: udp<BR />Max TTL: 30<BR />Port: 4434<BR />RDNS: enabled</P> <P>Default route(s):<BR />default via 172.16.10.1 dev eth0 proto 7<BR />2.3.4.0/29 dev eth1 proto kernel scope link src 2.3.4.5<BR />172.16.10.0/24 dev eth0 proto kernel scope link src 172.16.10.249<BR />172.31.10.0/24 dev eth2 proto kernel scope link src 172.31.10.249<BR />172.31.11.0/24 dev eth2.100 proto kernel scope link src 172.31.11.249</P> <P>Running: traceroute -n -m 30 -q 1 -p 4434 8.8.8.8</P> <P>----- Hop 1 -----<BR />raw: 1 172.16.10.1 2.255 ms<BR />ip: 172.16.10.1 ptr: -<BR />role: default gateway (first routed hop)<BR />route: direct dev eth0 src 172.16.10.249<BR />neigh: dev eth0 mac 48:3a:02:96:47:2d state REACHABLE</P> <P>----- Hop 2 -----<BR />raw: 2 192.168.0.4 2.255 ms<BR />ip: 192.168.0.4 ptr: -<BR />route: via 172.16.10.1 dev eth0 src 172.16.10.249<BR />neigh: (no ARP/NDP entry cached)</P> <P>----- Hop 3 -----<BR />raw: 3 173.46.3.209 1.637 ms<BR />ip: 173.46.3.209 ptr: unassigned-209.3.46.173.net.blink.ca<BR />route: via 172.16.10.1 dev eth0 src 172.16.10.249<BR />neigh: (no ARP/NDP entry cached)</P> <P>----- Hop 4 -----<BR />raw: 4 *<BR />ip: -</P> <P>----- Hop 5 -----<BR />raw: 5 *<BR />ip: -</P> <P>----- Hop 6 -----<BR />raw: 6 *<BR />ip: -</P> <P>----- Hop 7 -----<BR />raw: 7 24.156.145.98 8.092 ms<BR />ip: 24.156.145.98 ptr: -<BR />route: via 172.16.10.1 dev eth0 src 172.16.10.249<BR />neigh: (no ARP/NDP entry cached)</P> <P>----- Hop 8 -----<BR />raw: 8 209.148.230.53 5.392 ms<BR />ip: 209.148.230.53 ptr: 9044-cgw01.mtnk.asr9k.rmgt.net.rogers.com<BR />route: via 172.16.10.1 dev eth0 src 172.16.10.249<BR />neigh: (no ARP/NDP entry cached)</P> <P>----- Hop 9 -----<BR />raw: 9 69.63.248.69 5.523 ms<BR />ip: 69.63.248.69 ptr: -<BR />route: via 172.16.10.1 dev eth0 src 172.16.10.249<BR />neigh: (no ARP/NDP entry cached)</P> <P>----- Hop 10 -----<BR />raw: 10 72.14.216.54 4.025 ms<BR />ip: 72.14.216.54 ptr: -<BR />route: via 172.16.10.1 dev eth0 src 172.16.10.249<BR />neigh: (no ARP/NDP entry cached)</P> <P>----- Hop 11 -----<BR />raw: 11 *<BR />ip: -</P> <P>----- Hop 12 -----<BR />raw: 12 *<BR />ip: -</P> <P>----- Hop 13 -----<BR />raw: 13 *<BR />ip: -</P> <P>----- Hop 14 -----<BR />raw: 14 *<BR />ip: -</P> <P>----- Hop 15 -----<BR />raw: 15 *<BR />ip: -</P> <P>----- Hop 16 -----<BR />raw: 16 *<BR />ip: -</P> <P>----- Hop 17 -----<BR />raw: 17 *<BR />ip: -</P> <P>----- Hop 18 -----<BR />raw: 18 *<BR />ip: -</P> <P>----- Hop 19 -----<BR />raw: 19 *<BR />ip: -</P> <P>----- Hop 20 -----<BR />raw: 20 *<BR />ip: -</P> <P>----- Hop 21 -----<BR />raw: 21 *<BR />ip: -</P> <P>----- Hop 22 -----<BR />raw: 22 *<BR />ip: -</P> <P>----- Hop 23 -----<BR />raw: 23 *<BR />ip: -</P> <P>----- Hop 24 -----<BR />raw: 24 *<BR />ip: -</P> <P>----- Hop 25 -----<BR />raw: 25 *<BR />ip: -</P> <P>----- Hop 26 -----<BR />raw: 26 *<BR />ip: -</P> <P>----- Hop 27 -----<BR />raw: 27 *<BR />ip: -</P> <P>----- Hop 28 -----<BR />raw: 28 *<BR />ip: -</P> <P>----- Hop 29 -----<BR />raw: 29 *<BR />ip: -</P> <P>----- Hop 30 -----<BR />raw: 30 *<BR />ip: -</P> <P>== Done ==<BR />[Expert@CP-GW:0]#</P> Sun, 05 Apr 2026 19:01:15 GMT the_rock 2026-04-05T19:01:15Z https://community.checkpoint.com/t5/Scripts/Interactive-traceroute-script/m-p/269471#M1425 4 Sun, 05 Apr 2026 19:01:15 GMT https://community.checkpoint.com/t5/Scripts/Interactive-traceroute-script/m-p/269471#M1425 the_rock 2026-04-05T19:01:15Z https://community.checkpoint.com/t5/Scripts/Interactive-traceroute-script/m-p/269474#M1426 <P>I opened up this script to see how you were doing traceroute with tcp and icmp.<BR />Had no idea the standard traceroute had options for both.</P> Mon, 02 Feb 2026 18:36:04 GMT https://community.checkpoint.com/t5/Scripts/Interactive-traceroute-script/m-p/269474#M1426 PhoneBoy 2026-02-02T18:36:04Z https://community.checkpoint.com/t5/Scripts/Interactive-traceroute-script/m-p/269475#M1427 <P>Lots of possibilities : - )</P> Mon, 02 Feb 2026 18:37:14 GMT https://community.checkpoint.com/t5/Scripts/Interactive-traceroute-script/m-p/269475#M1427 the_rock 2026-02-02T18:37:14Z