Re: Spice protocol behind a Firewall

[Oscar Segarra <oscar.segarra@xxxxxxxxx>]

Hi Uri, 

The problem comes when VMs can migrate between Hypervisors. It is, eventually the scenario can turn as follows:

Hypervisor1 (10.0.0.1) <-- Stopped due to maintenance
Hypervisor2 (10.0.0.2)
    VM1 (port 5900)
    VM2 (port 5901)

    VM3 (port 5902)
    VM4 (port 5903)

Thanks a lot!

2017-02-21 13:49 GMT+01:00 Uri Lublin <uril@xxxxxxxxxx>:

On 02/21/2017 11:04 AM, Oscar Segarra wrote:

Hi Uri,

Thanks a lot for th example... It looks clarify the security/acl but
what I'd like to know is if is there any known configuration for an
scenario like this:

Hypervisor1 (10.0.0.1)
    VM1 (port 5900)
    VM2 (port 5901)
Hypervisor2 (10.0.0.2)
    VM3 (port 5902)
    VM4 (port 5903)

[1] http://wiki.squid-cache.org/SquidFaq/SquidAcl
After reading "And/Or logic" subsection of [1], a configuration
you can try is (again not even tested):
  acl HOST1 10.0.0.1
  acl HOST2 10.0.0.2
  acl PORT1 5900 5901
  acl PORT2 5902 5903
  http_access allow HOST1 PORT1
  http_access allow HOST2 PORT2
  http_access deny all


Regards,
    Uri.

2017-02-21 9:42 GMT+01:00 Uri Lublin <uril@xxxxxxxxxx
<mailto:uril@xxxxxxxxxx>>:

    On 02/19/2017 07:33 PM, Oscar Segarra wrote:

        Hi Uri,

        I have not been able to find the example you suggest... can you
        paste
        the url of the example?


    Hi Oscar,

    Disclaimer:
       This is just an example. There may be better more secure ways
       to do it. You should research and decide on a solution
       according to your specific requirements.
       I did not even test the suggested solution.

    For example:
    http://wiki.squid-cache.org/SquidFaq/SquidAcl
    <http://wiki.squid-cache.org/SquidFaq/SquidAcl> under
    "Is there an easy way of banning all Destination addresses except one?"

    You can configure your squid server to allow only access the
    two hosts and specific ports on those hosts and deny the rest.

    acl GOOD_HOST dst 10.0.0.1
    acl GOOD_HOST dst 10.0.0.2
    acl GOOD_PORT port 5900
    http_access allow GOOD_HOST
    http_access allow GOOT_PORT
    http_access deny all

    # The last command is not needed according to
    # http://www.squid-cache.org/Doc/config/http_access/
    <http://www.squid-cache.org/Doc/config/http_access/>
    # but it does appear in the SquidAcl example

    Uri.

_______________________________________________
Spice-devel mailing list
Spice-devel@xxxxxxxxxxxxxxxxxxxxx
https://lists.freedesktop.org/mailman/listinfo/spice-devel