ChrisI88
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vCenter Appliance 7.0.x Firewall rules

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We want to block all traffic to the vcenter appliance except for 1 IP address range.   

Is this even possible with the limited rule set provided ?   

Will adding a accept rule for the allowed IP range automatically block everything else or do I need a block all rule after the allow rule ?

I'm guessing a block all rule would be a IP address of 0.0.0.0 - but have no idea.  the documentation on the internal firewall on the appliance is very generalized.

Some examples in the documentation would be very helpful.

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vXav
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We want to block all traffic to the vcenter appliance except for 1 IP address range.   

Is this even possible with the limited rule set provided ?  

Yes, you need to add an accept rule for your range and then a reject rule for 0.0.0.0/0 like you said.


Will adding a accept rule for the allowed IP range automatically block everything else or do I need a block all rule after the allow rule ?

No.


I'm guessing a block all rule would be a IP address of 0.0.0.0 - but have no idea.  the documentation on the internal firewall on the appliance is very generalized.

Correct, 0.0.0.0/0

I just ran the tests as I'd never tried before. Just in case you lock yourself out, you can edit the rules with the shell in /etc/vmware/appliance/firewall.conf and then reload with /usr/lib/applmgmt/networking/bin/firewall-reload. Although it might be cleaner/safer to do it at the actual firewall level.

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vXav
Expert
Expert

We want to block all traffic to the vcenter appliance except for 1 IP address range.   

Is this even possible with the limited rule set provided ?  

Yes, you need to add an accept rule for your range and then a reject rule for 0.0.0.0/0 like you said.


Will adding a accept rule for the allowed IP range automatically block everything else or do I need a block all rule after the allow rule ?

No.


I'm guessing a block all rule would be a IP address of 0.0.0.0 - but have no idea.  the documentation on the internal firewall on the appliance is very generalized.

Correct, 0.0.0.0/0

I just ran the tests as I'd never tried before. Just in case you lock yourself out, you can edit the rules with the shell in /etc/vmware/appliance/firewall.conf and then reload with /usr/lib/applmgmt/networking/bin/firewall-reload. Although it might be cleaner/safer to do it at the actual firewall level.