Ubuntu Server KVM - Shield 3 of 4 NICs from Host
I use 4 different networks (1 for server-host) and one for each of the 3 vms.
Those 4 networks are completely shielded from each other and MUST NOT have access to one another.
What im trying to accomplish is on the host system, just to give the host itself access to the first nic, the other 3 must not be visible (or active) so the host can remain within its network and is completely firewalled.
the 3 vms use 3 independent DMZ networks and must not access the main network at all costs. the same goes for the host, it may not be accessed in any way from one of the dmz's.
How do i need to setup my network in ubuntu server with kvm?
networking ubuntu linux-kvm
asked Feb 19 at 10:22
aphardtaphardt
11
add a comment |
I use 4 different networks (1 for server-host) and one for each of the 3 vms.
Those 4 networks are completely shielded from each other and MUST NOT have access to one another.
What im trying to accomplish is on the host system, just to give the host itself access to the first nic, the other 3 must not be visible (or active) so the host can remain within its network and is completely firewalled.
the 3 vms use 3 independent DMZ networks and must not access the main network at all costs. the same goes for the host, it may not be accessed in any way from one of the dmz's.
How do i need to setup my network in ubuntu server with kvm?
networking ubuntu linux-kvm
asked Feb 19 at 10:22
aphardtaphardt
11
add a comment |
I use 4 different networks (1 for server-host) and one for each of the 3 vms.
Those 4 networks are completely shielded from each other and MUST NOT have access to one another.
What im trying to accomplish is on the host system, just to give the host itself access to the first nic, the other 3 must not be visible (or active) so the host can remain within its network and is completely firewalled.
the 3 vms use 3 independent DMZ networks and must not access the main network at all costs. the same goes for the host, it may not be accessed in any way from one of the dmz's.
How do i need to setup my network in ubuntu server with kvm?
networking ubuntu linux-kvm
asked Feb 19 at 10:22
aphardtaphardt
11
I use 4 different networks (1 for server-host) and one for each of the 3 vms.
Those 4 networks are completely shielded from each other and MUST NOT have access to one another.
What im trying to accomplish is on the host system, just to give the host itself access to the first nic, the other 3 must not be visible (or active) so the host can remain within its network and is completely firewalled.
the 3 vms use 3 independent DMZ networks and must not access the main network at all costs. the same goes for the host, it may not be accessed in any way from one of the dmz's.
How do i need to setup my network in ubuntu server with kvm?
networking ubuntu linux-kvm
networking ubuntu linux-kvm
asked Feb 19 at 10:22
aphardtaphardt
11
asked Feb 19 at 10:22
aphardtaphardt
11
asked Feb 19 at 10:22
aphardtaphardt
11
asked Feb 19 at 10:22
aphardtaphardt
11
asked Feb 19 at 10:22
aphardtaphardt
11
11
add a comment |
add a comment |
2 Answers
2
active
oldest
votes
How about your vm network interface setting?
- Host device
- Specify share device name (Bridge, must be created from host)
if you use different networks, you can try host device mode.
e.g.
- vm1 --> eth1
- vm2 --> eth2
- vm3 --> eth3
answered Feb 19 at 10:30
CloudCloud
92
add a comment |
Use VTD pass through. Pass the NICs directly to the guest machines. This way the Host OS will never see the NICs or any traffic on them.
If you need to share the NICs because more than one guest needs to be on each network, then you must use bridges. Preventing the host from appearing on the bridge is tricky. Note that it is not as simple as not assigning an IP address. Some suggestions are here: https://vincent.bernat.ch/en/blog/2017-linux-bridge-isolation
answered Feb 20 at 0:00
AndyAndy
1,041311
add a comment |
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
How about your vm network interface setting?
- Host device
- Specify share device name (Bridge, must be created from host)
if you use different networks, you can try host device mode.
e.g.
- vm1 --> eth1
- vm2 --> eth2
- vm3 --> eth3
answered Feb 19 at 10:30
CloudCloud
92
add a comment |
How about your vm network interface setting?
- Host device
- Specify share device name (Bridge, must be created from host)
if you use different networks, you can try host device mode.
e.g.
- vm1 --> eth1
- vm2 --> eth2
- vm3 --> eth3
answered Feb 19 at 10:30
CloudCloud
92
add a comment |
How about your vm network interface setting?
- Host device
- Specify share device name (Bridge, must be created from host)
if you use different networks, you can try host device mode.
e.g.
- vm1 --> eth1
- vm2 --> eth2
- vm3 --> eth3
answered Feb 19 at 10:30
CloudCloud
92
How about your vm network interface setting?
- Host device
- Specify share device name (Bridge, must be created from host)
if you use different networks, you can try host device mode.
e.g.
- vm1 --> eth1
- vm2 --> eth2
- vm3 --> eth3
answered Feb 19 at 10:30
CloudCloud
92
answered Feb 19 at 10:30
CloudCloud
92
answered Feb 19 at 10:30
CloudCloud
92
answered Feb 19 at 10:30
CloudCloud
92
92
add a comment |
add a comment |
Use VTD pass through. Pass the NICs directly to the guest machines. This way the Host OS will never see the NICs or any traffic on them.
If you need to share the NICs because more than one guest needs to be on each network, then you must use bridges. Preventing the host from appearing on the bridge is tricky. Note that it is not as simple as not assigning an IP address. Some suggestions are here: https://vincent.bernat.ch/en/blog/2017-linux-bridge-isolation
answered Feb 20 at 0:00
AndyAndy
1,041311
add a comment |
Use VTD pass through. Pass the NICs directly to the guest machines. This way the Host OS will never see the NICs or any traffic on them.
If you need to share the NICs because more than one guest needs to be on each network, then you must use bridges. Preventing the host from appearing on the bridge is tricky. Note that it is not as simple as not assigning an IP address. Some suggestions are here: https://vincent.bernat.ch/en/blog/2017-linux-bridge-isolation
answered Feb 20 at 0:00
AndyAndy
1,041311
add a comment |
Use VTD pass through. Pass the NICs directly to the guest machines. This way the Host OS will never see the NICs or any traffic on them.
If you need to share the NICs because more than one guest needs to be on each network, then you must use bridges. Preventing the host from appearing on the bridge is tricky. Note that it is not as simple as not assigning an IP address. Some suggestions are here: https://vincent.bernat.ch/en/blog/2017-linux-bridge-isolation
answered Feb 20 at 0:00
AndyAndy
1,041311
Use VTD pass through. Pass the NICs directly to the guest machines. This way the Host OS will never see the NICs or any traffic on them.
If you need to share the NICs because more than one guest needs to be on each network, then you must use bridges. Preventing the host from appearing on the bridge is tricky. Note that it is not as simple as not assigning an IP address. Some suggestions are here: https://vincent.bernat.ch/en/blog/2017-linux-bridge-isolation
answered Feb 20 at 0:00
AndyAndy
1,041311
answered Feb 20 at 0:00
AndyAndy
1,041311
answered Feb 20 at 0:00
AndyAndy
1,041311
answered Feb 20 at 0:00
AndyAndy
1,041311
1,041311
add a comment |
add a comment |
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