Go to https://login.microsoftonline.com/ and log in using your email address as your User ID, and your password for password.
- Once signed in, under Outlook click options
- On the right hand side there is a section called ‘Shortcuts to other things you can do’, click on ‘Change your password’
- This will now take you to the section where you can change your password
Start the Azure Active Directory Powershell console
Once it has loaded run the following two commands:
- Import-Module DirSync
The sync will start immediately.
The quickest and probably the easiest way to set an interface to promiscuous mode in Linux is to run the following command and add the same to the /etc/rc.local file to survive a reboot.
ifconfig eth0 up promisc
Another option to make it permanent is to edit and update the network configuration file namely /etc/network/interfaces
Remove the lines related to eth0 and update the file to look something like
iface eth0 inet manual
up ifconfig eth0 up promisc
down ifconfig eth0 down -promisc
If you have more than one VLAN on a port (a “trunk port“), you need some way to tell which packet belongs to which VLAN on the other end. To do this you are “tagging” a packet with a VLAN tag (or VLAN header if you like). In reality a VLAN tag is inserted in the Ethernet frame like this:
The 802.1Q (dot1q, VLAN) tag contains a VLAN-ID and other things explained in the 802.1Q Standard. The first 16 bits contain the “Tag Protocol Identifier” (TPID) which is 8100. This also doubles as the EtherType 0x8100 for devices that don’t understand VLANs.
So a “tagged” packet contains the VLAN information in the Ethernet frame while an “untagged” packet doesn’t. A typical use case would be if you have one port from a router to a switch which multiple customers are attached to:
In this example customer “Green” has VLAN 10 and Customer “Blue” has VLAN 20. The ports between switch and customers are “untagged” meaning for the customer the arriving packet is just a normal Ethernet packet.
The port between router and switch is configured as a trunk port so that both router and switch know which packet belongs to which customer VLAN. On that port the Ethernet frames are tagged with the 802.1Q tag.