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Disabling Network Interfaces
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cisco_guru
Apr 20, 2004, 8:33:47 PM4/20/04
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All,
I need to find a way to have Windows only allow one active NIC at a
time. In other words, if Ethernet-1 is active and I plug Ethernet-2 in,
Ethernet-1 automatically disables itself and vice-versa. We are trying to
prevent users from dual-homing and from bridging interfaces. I don't want a
user that is plugged in to my Corporate network bypassing the firewall with
a secondary NIC.
Thanks for the help,
John
Jim
Apr 21, 2004, 12:35:55 PM4/21/04
to
So your clients do/can have multiple NICs?! I'm not sure how having another
NIC circumvents your firewall given (I assume) that any access outside the
local network is still routed out the same network (physically) and
firewall, this is NOT the case? What am I missing? Most any decent
firewall allows MAC filters, so the installation of another NIC (same
physical network) would not circumvent the firewall, it would just not be
authorized unless added to the firewall's MAC filters. Again, I must be
missing something here, it's not clear how the mere installation of another
NIC circumvents your firewall, unless you're saying this second NIC is
connected to another physical network??!! How? Heck, it's far more likely
(and easier) they could simply install a *modem* and bypass your firewall!!
NIC circumvents your firewall given (I assume) that any access outside the
local network is still routed out the same network (physically) and
firewall, this is NOT the case? What am I missing? Most any decent
firewall allows MAC filters, so the installation of another NIC (same
physical network) would not circumvent the firewall, it would just not be
authorized unless added to the firewall's MAC filters. Again, I must be
missing something here, it's not clear how the mere installation of another
NIC circumvents your firewall, unless you're saying this second NIC is
connected to another physical network??!! How? Heck, it's far more likely
(and easier) they could simply install a *modem* and bypass your firewall!!
Jim
"cisco_guru" <jfis...@austin.rr.com> wrote in message
news:Ljjhc.4666$NR5....@fe1.texas.rr.com...
cisco_guru
Apr 22, 2004, 8:44:55 AM4/22/04
to
I'm worried about wireless. We are about to deploy a "guest wireless
network". I don't want laptop users with a built in wireless NIC hopping on
this network and the Corporate network at the same time. The guest network
is something being pushed by upper level management for contractors and
guests. This will be a wide open unsecured LAN. More than likely this will
be an extension of a Cable modem network.
network". I don't want laptop users with a built in wireless NIC hopping on
this network and the Corporate network at the same time. The guest network
is something being pushed by upper level management for contractors and
guests. This will be a wide open unsecured LAN. More than likely this will
be an extension of a Cable modem network.
"Jim" <nu...@null.com> wrote in message
news:iqxhc.25841$Yf6.21393@fed1read07...
laman
May 6, 2004, 6:35:40 AM5/6/04
to
You can assign the guest wireless network on the RAS (and enabling
authentication), and disabling the general staff from accessing the
corporate network on RAS.
authentication), and disabling the general staff from accessing the
corporate network on RAS.
"cisco_guru" <jfis...@austin.rr.com> wrote in message news:<b7Phc.13757$hR1....@fe2.texas.rr.com>...
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