Find the status of the NIC: Open System Preferences => Network.Note: on Yosemite, there is no "More Info" tab. This will give the IP address and MAC address of the router, and may be used by SR or LNS to determine if there’s a Rogue DHCP server in the customer’s building.Īnother way for checking the IP and MAC address: Click on apple logo (upper left corner) => "About this Mac"=> "More Info" => (for Lion and Yosemite) "System Report" => "Network" => "Ethernet". Press enter (or return) on the keyboard.Open Macintosh HD => Applications => Utilities.For Lion and Yosemite: the MAC address will be under the "Hardware" tab.Īrp is a Unix command used to identify network-connected computers, routers, etc. For Tiger: Under the Ethernet tab record the Ethernet ID (this is the MAC address).Under the TCP/IP tab, record the IP address (if it’s blank, leave a note saying that it’s blank).For Leopard, Lion, and Yosemite: Select “Ethernet” in the list on the left and click “Advanced”. For Tiger: Click on the menu next to “Show” and select “Built-in Ethernet”.Getting the IP address and MAC address and running "arp -a" Wait 5 seconds, then enable the NIC by clicking on the gear button again and selecting “Make Service Active” this time.To disable the NIC, elect “Make Service Inactive”.Click on the gear button (it’s below the list on the left). Click on “Ethernet” in the list on the left.Click the button “Apply Now” (lower right corner). Wait 5 seconds, then enable the NIC, by placing a checkmark next to “Built-in Ethernet”.Click the button “Apply Now” (located in lower right corner). To disable the NIC, remove the checkmark next to “Built-in Ethernet”.Click on the menu next to “Show” and select “Network Port Configurations”.Didn't help? See section below.ĭisable and re-enable the Network Card (NIC) It also saves the customer’s custom settings.
#Firewall for mac os x lion manual#
#Firewall for mac os x lion plus#
For Leopard, Lion, and Yosemite: Select “Edit Locations”, then click on the plus “+” button. Under the “TCP/IP” tab click the button “Renew DHCP Lease”.For Leopard, Snow Leopard, Lion, and Yosemite: Click on “Ethernet” in the list on the left, then click the button “Advanced” in the lower right corner. In the window that appears click Network. Click on the Apple logo (top left corner), click System Preferences.Release and renew DHCP lease (renew IP address) If you need to create a ticket for someone else to work on this, there is some information that we must have.You will need to obtain the OS version.Creating a new location, getting the IP, MAC address and running “arp -a".Turning the network card off and on again.Typical troubleshooting steps on Macs include three main approaches:
3 Information that we must have in a ticket.1.4 Getting the IP address and MAC address and running "arp -a".1.3 Disable and re-enable the Network Card (NIC).1.1 Release and renew DHCP lease (renew IP address).
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