• All Community
    • All Community
    • Forums
    • Ideas
    • Blogs
Advanced

Not what you are looking for? Ask the experts!

This forum thread needs a solution.
Kudos0

TCP SYN Flood with iPhone

This week Norton on my MacBookPro has been blocking a SYN TCP Flood "attack" from my iPhone 8 (running iOS 11.2.1).  I suspect Norton is being oversensitive.

Any ideas?

Replies

Kudos0

Re: TCP SYN Flood with iPhone

Hello Mark. First thing I would do is perform a reset on whatever router you are using. That will force your ISP to reassign a new IP address and clear all your leases. When you restart the router connect ONLY the machine you are currently seeing this issue on. LEAVE all other devices OFF the network and try to duplicate the issue. Please have a look at this article for clarification:

https://discussions.apple.com/thread/5096277

https://forums.macrumors.com/threads/syn-flood-dos-attack-from-my-macbook-pro.1552579/

Happy Holidays

Retired military (Navy 1980-2002) AO1 (AW) Aviation Warfare Specialist "From DOS to Windows10 what a journey it has been" / MS Certified Professional / Windows 10 Professional x 64 version 1809 / build 17763.437 / NCSP 22.17.0.183 / Norton Core v.282 on Android 1.93
Kudos0

Re: TCP SYN Flood with iPhone

An update.

Based on timing, I believe that this Syn Flood from my iPhone to my MacBookPro is happening when I use my Apple Watch to unlock the laptop.

This thread is closed from further comment. Please visit the forum to start a new thread.