In OS X, the “root” user account previously had no permission restrictions and could access any system folder or application on your Mac. System Integrity Protection is a security technology in OS X El Capitan that’s designed to help prevent potentially malicious software from modifying protected files and folders on your Mac. If you then try to do as the logs say, you won’t be able to do it.Ĭhmod: Unable to change file mode on /usr/sbin/pppd: Operation not permittedĪpparently, there is a new feature called ‘ System Integrity Protection‘ in OSX El Capitan, which restricts the root account to do perform certain actions.

13:09:35.094 SSL VPN connection is terminated. 13:09:34.308 Please delete and reinstall NetExtender, or run ‘chmod u+s /usr/sbin/pppd’ as an administrator. 13:09:34.308 ERROR: Pppd is not setuid-root and the invoking user is not root. 13:09:34.301 Using new PPP frame encoding mechanism

If you are trying to install Dell SonicWALL NetExtender (it’s a VPN client) on OSX El Capitan, you might run into a situation where it won’t connect to the VPN server and you might see this in the logs.

How to install os x el capitan today