Cisco Secure Endpoint Mac/Linux CLI Navigate to the CLI The commands dependent on this are disclosed throughout this article.
The CLI commands are available for use by all users on a system however, s ome commands depends on policy configuration and/or root permissions.
No further access to those hardware registers is made.This document describes the Command Line Interface (CLI) commands available for use with the Secure Endpoint connector on Linux and MacOS. As far as I can see, it supports no method of actually asking "what is your PROM Ethernet address" - the MAC address is read out during the "probe1" section of the module initialization, and stored away. I had a quick look at the pcnet32.c drivers (because it's one of the models of network card that I have a rough idea how it works and where the different registers are, etc, so I can see what it does). Of course, there are cases where there isn't a hardware network card for that particular interface - virtual network drivers for virtualization and when using bridges and software switches for example.Īnd of course, the hardware may be such that you can't actually read the "original" MAC address when it has been overwritten by software, because there is only one set of registers for the MAC address itself. The only way to find the original MAC address is to use the same method the network card driver does - unfortunately, I don't believe there is a generic way to tell the driver to provide its MAC address "as provided by the hardware". Memcpy(mac, ifr.ifr_hwaddr.sa_data, IFHWADDRLEN) #include /* for the glibc version number */
I suppose it should be possible to write C code for it, below code gives my current MAC but not the original MAC: #include /* Standard I/O */ Is there any utility or command for that? How do I find the original MAC address? There must be a way to find it, because it is still burned permanently into the card, but I can't find a tool to read the burned in address. Or setting it "permanently" using /etc/sysconfig/network-scripts/ifcfg-eth0. I understand how to find the current MAC address using ifconfig.īut the address can be changed, say by using ifconfig eth0 hw ether uu:vv:ww:yy:xx:zz I'm trying to figure out how to find the original MAC address of an Ethernet NIC on my Linux box. Is it possible to read the MAC address from the NIC directly? I have the code below but it just reads from the layer above but not the card itself.
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