What is the replacement for interface filters in network extension?

App & System Services Networking
Android2Test OP
Created Feb ’20
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Hi Experts,


I know there are replacements for KAUTH, socket and IP filters in system extension according to https://developer.apple.com/support/kernel-extensions/.


Could you please share with me the replacement for interface filters in the network extension? thanks.

https://developer.apple.com/library/archive/documentation/Darwin/Conceptual/NKEConceptual/interface_filter_nke/interface_filter_nke.html#//apple_ref/doc/uid/TP40001858-CH230-SW1

Answered by DTS Engineer in 406163022

Take a look at NetworkExtension filter packet providers (

NEFilterPacketProvider
). The 
NEFilterPacketHandler
callback is given both the interface (via the 
interface
parameter) and the link-level header (at the start of the buffer pointed to be 
packetBytes
).

Share and Enjoy
—
Quinn “The Eskimo!”
Apple Developer Relations, Developer Technical Support, Core OS/Hardware 

let myEmail = "eskimo" + "1" + "@apple.com"
Replies  2
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DTS Engineer OP
Apple
Feb ’20
Accepted Answer

Take a look at NetworkExtension filter packet providers (

NEFilterPacketProvider
). The 
NEFilterPacketHandler
callback is given both the interface (via the 
interface
parameter) and the link-level header (at the start of the buffer pointed to be 
packetBytes
).

Share and Enjoy
—
Quinn “The Eskimo!”
Apple Developer Relations, Developer Technical Support, Core OS/Hardware 

let myEmail = "eskimo" + "1" + "@apple.com"
0
Android2Test OP
Feb ’20

Thanks a lot, eskimo.

0
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