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Firewall

Last updated on Mar 06, 2025

Firewall - Getting Started

A firewall is a security mechanism that acts as a barrier between networks, typically between the internet and an internal network. It monitors and filters network traffic based on predefined rules to allow or block specific types of traffic.

American Cloud allows self assigned firewall and port forwarding rules. During initial instance launch a few firewall rules will be established as default. These default rules are in place to ensure SSH and CMP graph are operational. To view and create firewall rules follow the following guidelines.

Adding Firewall Rules

Port rules are one of the criteria used by firewalls to control network traffic. Ports are numbered virtual endpoints on a network device that allow different types of data to be transmitted and received. Firewalls can be configured with port rules to allow or block traffic based on the specific ports being used. For example, a firewall may be configured to allow incoming traffic on port 80, which is commonly used for web traffic, while blocking traffic on port 22, which is commonly used for SSH (Secure Shell) access. Port rules are an important aspect of firewall configuration, as they help control the flow of data between networks and protect against unauthorized access or malicious activities.

  • Navigate to Firewall rules

  1. In the navigation pane to the left select 'Cloud Compute'

  2. In the list of instances select the desired instance to apply a rule

  3. In the tabs select 'Settings'

  4. Then in the navigation pane select 'Firewall'

Default Firewall Rules

Note
The default ports opened during instance build. These ports are opened so the American Cloud CMP can communicate with SSH and the graphs presented in the Usage section.

Select Add Firewall Rule

To add a firewall rule select 'Add Firewall Rule'.

Provide Specifics

Input your Source CIDR, select a protocol, Start Port and End Port.

Further information on Transfer Protocols coming soon!

Created

  • The new firewall rule will be created.

Create Port Forwarding Rule

  • Navigate to Port Forwarding rules

  1. In the navigation pane to the left select 'Cloud Compute'

  2. In the list of instances select the desired instance to apply a rule

  3. In the tabs select 'Settings'

  4. Then in the navigation pane select 'Port Forward'

Add Port Forward Rule

  • Select ADD Port Forwarding Rule.

Add Protocol and Port

  • Add protocol Private Port and Public Port. Select Submit.

More information on Transfer Protocols coming soon!

New Rule Creation

Now rule will be created.

Delete Firewall/Port Forwarding Rules

To delete a rule simply navigate to firewall or port forwarding rules as previously described. Identify rule needing deletion and select "Delete Rule". In the warning/last chance block confirm deletion to continue.