Prepare your institution for iOS 10 and macOS Sierra

If you're a system administrator, you should review this list and prepare for changes before updating to iOS 10 and macOS Sierra.

Changes coming with iOS 10

VPN Protocol iOS 10 and macOS Sierra won’t support PPTP connections for VPN profiles. Learn more about these changes to PPTP VPN.
Cryptographic Protocol

The SSLv3 cryptographic protocol and the RC4 symmetric cipher suite will be deprecated in iOS 10, macOS 10.12, tvOS 10, and watchOS 3.

After you update, by default, TLS clients or servers implemented with SecureTransport APIs won't have RC4 cipher suites enabled. They also won't be able to connect when RC4 is the only cipher suite available.

If you own a service or app which requires RC4, you should upgrade it to turn on cipher suites which are more secure.

 

Changes coming with macOS Sierra

Portable home directories Starting with macOS Sierra, you won't be able to create portable home directories. Mobile home directories, which have networks accounts that are cached locally, can still be created. However, their home folder will no longer sync with their network home directory.
VPN Protocol iOS 10 and macOS Sierra won’t support PPTP connections for VPN profiles. Learn more about these changes to PPTP VPN.
Kernel Core Dumps

To gather kernel core dumps, you must use the nvram command to properly set boot-args NVRAM variable. Starting with macOS Sierra, you must be booted to the recovery partition to run this command.

Cryptographic Protocol

The SSLv3 cryptographic protocol and the RC4 symmetric cipher suite will be deprecated in iOS 10, macOS 10.12, tvOS 10, and watchOS 3.

After you update, by default, TLS clients or servers implemented with SecureTransport APIs won't have RC4 cipher suites enabled. They also won't be able to connect when RC4 is the only cipher suite available.

If you own a service or app which requires RC4, you should upgrade it to turn on cipher suites which are more secure.

Directory Integration Starting with macOS Sierra, you might see warnings when using RC4 encryption for Kerberos. If you see these warnings, change your configuration in Active Directory to support macOS clients in the future. Learn how to prepare for this change.
Xsan 5 Once you update to macOS Sierra, the Xsan file system manager (fsm) upgrades your volume’s metadata to a newer format. Learn how to prepare for this change to Xsan.

 

Changes coming with macOS Server

Software Update Server Software Update Service is deprecated and will be removed in a future release. To set up the Software Update service in Server 5.2, use the View menu to turn it on first.

 

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