[Openstack] security group rules

Jagga Soorma jagga13 at gmail.com
Tue Apr 12 01:15:08 UTC 2016


Hi Guys,

There is a default security group rule that has the following entry:

--
Direction: Ingress
Ether Type: IPv4
IP Protocol: Any
Port Range: Any
Remote Prefix: -
Remote Security Group: default
--

Now this makes me think that it should basically allow all ingress ipv4
traffic (udp & tcp) on any port.  However we have to manually open up ssh
for example by adding another rule for port 22 and remote prefix of
0.0.0.0/0.  Not sure what a - in the remote prefix means and why is this
rule even there if it does nothing.  Any help understanding this would be
appreciated.

Thanks.
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