Note for Mac High Sierra (10.13) users When you log in to the Cisco AnyConnect VPN, you may be prompted to upgrade to a new version of software. If you choose to upgrade, you'll see a System Extension Blocked alert directing you to go to System Preferences > Security & Privacy to allow the extension.

The approval field is only present in the Security & Privacy preferences pane for 30 minutes after the alert. If the extension is not approved with in 30 minutes the software will not function correctly. Access to restricted library journals from off-campus Stanford University Libraries (SUL) updated the method by which authorized community members access restricted journals from off-campus. Rather than using Stanford's VPN (Virtual Private Network), SUL wants community members to use its EZProxy service. Stanford's VPN allows you to connect to Stanford's network as if you were on campus, making access to restricted services possible.

There are two types of VPN available: • Default Stanford (split-tunnel) allows access to anything at stanford.edu via the VPN connection but non-Stanford traffic flows normally on an unencrypted internet connection. • Full Traffic (non-split-tunnel) encrypts all internet traffic from your computer but may inadvertently block you from using resources on your local network, such as a networked printer at home. This also allows access to library journals as if you were on campus. Features • When using VPN, your off-campus computer is dynamically assigned a Stanford IP address to connect back to Stanford's network.

Each cable modem, regardless of brand, is uniquely identified by its Cable Modem ID, or MAC address - short for M edia A ccess C ontrol. This address is a part of the hardware on the modem, and is. How to explain what a mac address is for a internet modem. If you have two networks with a router in between you cannot have a device in network A send a packet to the MAC address of a device in network B. No device in network A has the MAC address of the device in network B, so a packet to this MAC address will be discarded by all devices in the network A (also by the router). Routing is done on IP level. At this point my ISP could no longer help me since I was able to get to the internet directly thru the modem and advised me to contact netgear for issues with the router. I called netgear support and the bottom line is they had me change a setting under Internet Setup. I changed the setting under 'Router MAC Address' to 'Use Computer MAC Address'. If the modem has an assigned IP address, you can find the MAC address using the ping and arp command: Ping the device: ping 1.2.3.4; View arp table: arp -a; The MAC address information is pulled by the ping command, and the info is temporarily stored in your NIC. The arp command is to show the stored information.

• A Stanford IP address allows you access to Stanford's computing resources and certain campus services (e.g., departmental file and print servers). Get started Select your operating system to see the VPN configuration instructions for your device: • • • • • Learn more •.

• • • Primer • This guide will assist with the installation of the Cisco AnyConnect VPN client for OS X 10.6 (Snow Leopard), 10.7 (Lion), 10.8 (Mountain Lion) and 10.9 (Mavericks). • You need administrator level account access to install this software.

Cisco AnyConnect is the recommended VPN client for Mac. The built-in VPN client for Mac is another option but is more likely to suffer from disconnects. Overview Stanford's VPN allows you to connect to Stanford's network as if you were on campus, making access to restricted services possible.

• Note: Some screen shots may be slightly different from what you see depending on the version of your operating system and the VPN software. Installation • Download the VPN installer from MIT's download page, (certificates required).

• Find and open the downloaded file. • The file will mount a disk image. Open this disk image and launch the file named 'anyconnect-macosx-XXXXXX'. • On the following screen titled Welcome to the AnyConnect Secure Mobility Client Installer, click Continue. • When presented with the software license agreement, click Continue then click Agree on the slide-down menu. • If you are prompted 'Select a Destination.'

, select your primary hard drive and click Continue. • On the window titled Standard Install., click the button labeled Install and enter your computer username and password when prompted and click Install Software.

Note: The user must be an administrator of the machine to install. Result: The VPN client will begin to install itself. • When the installation has competed, click the button labeled Close. Initiating a Connection to VPN and to VPN using Duo • Cisco AnyConnect can be found in the Cisco folder located in the Applications folder (/Applications/Cisco/). • Navigate to /Applications/Cisco/ and open 'Cisco AnyConnect Secure Mobility Client'. • To authenticate with Duo, enter vpn.mit.edu/duo and click the button labeled Connect.

• Enter your MIT username and password then click the button labeled OK. With Duo authentication, you will see a field asking for a Second Password.

In this field you may type in one of the following options: • push - Duo will send a push notification to your registered cell phone with the Duo Security mobile app installed • push2 - Duo will send a push notification to your _second registered device with the Duo Security mobile app installed_ • sms - Duo will send an SMS to your registered cell phone • Phone - Duo will call your registered phone • Phone2 - Duo will call your second registered phone • Yubikey - If you are using a Yubikey for authentication, make sure the Second Password field is highlighted and use your key. For instructions on using the Yubikey, please see • The one time code generated by your hardware token or the Duo Security mobile app (the code changes every 60 seconds) In this example, I entered 'push' in the Second Password field. I will receive a push notification on my cell phone, go to the Duo app and click Approve. • When prompted at the MIT's Virtual Private Network (VPN) screen, click the button labeled Accept to connect to MIT's Virtual Private Network. • Upon successful connection, Cisco AnyConnect will minimize itself and you will see the AnyConnect logo with a small lock in your menu bar just to the left of the time.