The arrows direction indicates which direction the packet is going. In the Sharing & Permissions settings, give the admin Read & Write privileges. These lines include two IP addresses on either side of an arrowthese are the hosts that are exchanging the packet. In macOS, right-click the app icon and select Get Info.
Rinse and repeat in Frame #7 with a TTL of 2 which the 2nd hop (10.111) sends back in Frame #8. In Windows 10, search for Wireshark and select Run as administrator.
Traceroute does this three times (the * * * in traceroute output), increments the TTL and tries again. The additional IP addresses in Frame #2 are the addresses from Frame #1 (the outgoing request). 1 (the router) and destination (.135) of the system making the traceroute request. The resulting value of 0 caused the router (.1) to send a ICMP Type 11 back in frame #2.įrame #2 has a source of. Intermediate devices will return a Type: 11 (Time-to-live exceeded) message that includes the IP header of the outgoing message. IP multicast frames all use MAC layer addresses beginning with the 24-bit prefix. In this example I added -e frame.number which would help to inspect the packet in the Wireshark gui. Wireshark can capture traffic from many different network media types. Another protocol in the packet includes those fields.Īn easy way to recreate this is to make a capture of a traceroute (tracert on Windows).
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