Merge branch 'feature/default-egress' into 'master'

add info about default egress rule

See merge request !72

content/cloud/network/index.md

@@ -210,3 +210,9 @@ The new floating IP address for the router must be from the same network pool wh
 
 2. Now click on the **Associate** button next to the Floating IP you just created. Select **Port to be associated** with the desired instance. Confirm with the **Associate** button. Repeat this section for all your machines requiring a Floating IP.
 ![](images/associate-fip.png)
+
+
+## Default Egress rules
+If you delete default egress rules, your virtual machine loses will not be able to send outgoing communication. To fix this, add a new egress rule with *any* IP protocol and port range, set Remote IP prefix to *0.0.0.0/0* (IPv4) or *::/0* (IPv6).
+
+![](images/network_secutity_groups_egress.png)
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