Ask Your Question
0

TCP ACKed unseen segment

asked 2018-10-23 21:00:43 +0000

dkneverland gravatar image

updated 2018-10-23 21:01:33 +0000

Hi All

We are having issues with one of our Meraki Wireless SSID's not allowing Apple iOS App Store updates etc, but works fine on Android and the Play store.

Can someone explain what the attached means please? https://imgur.com/a/HBkq56B

Thanks heaps

edit retag flag offensive close merge delete
add a comment

1 Answer

Sort by ยป oldest newest most voted
1

answered 2018-11-06 03:17:14 +0000

Spooky gravatar image

Hi

Each [TCP ACKed unseen segment] means that you captured a TCP ACK packet but did not capture the actual data that was received and acknowledged.

In other words, Apple's server at 17.42.254.12 sent some data to the host at 192.168.138.139.

The host at 192.168.138.139 received that data and sends a TCP ACK back to Apple but you only captured that TCP ACK and not the data Apple sent.

This can happen when Wireshark or your capture device drops packets while capturing.

Cheers,

Spooky

edit flag offensive delete link more
add a comment

Your Answer

Please start posting anonymously - your entry will be published after you log in or create a new account.

Add Answer

Question Tools

1 follower

subscribe to rss feed

Stats

Asked: 2018-10-23 21:00:43 +0000

Seen: 5,881 times

Last updated: Nov 06 '18