• Network Reachability Checklist
• Pre-install Checklist
• Supported Operating Systems
• Download
• Configure
  • a) Manual Configuration
  • b) Automated Bootstrap
• Install
• Verify Installation

Note: Netagent v2 has been released. This article describes installation and configuration of legacy Netagent v1. To install the latest Netagent v2, use the latest v2 installation guides.

Network Reachability Checklist

1. The Access Tier server(s) should be located in your internet-facing DMZ and have a Public IP Address so it can be reached from anywhere on the internet.

2. Configure a Public Wildcard DNS Record that follows your corporate domain name convention to map to the Access Tier’s Public IP Address
   • A common pattern is to use *.corp.example.com. Then, corporate services can be exposed to your users as website1.corp.example.com, sshserver2.corp.example.com, etc.
   • If you’re deploying multiple Access Tiers across multiple locations, you can further scope the subdomains into *.east.corp.example.com, *.west.corp.example.com, etc.
3. Expose the following ports to the internet so the Access Tier can accept inbound connections from the internet:

4. Ensure the Access Tier can make outbound connections to following addresses:

The netagent binary supports HTTP Proxy settings. If an Egress Proxy is configured on the host via the HTTP_PROXY environment variable, outbound connections from the Access Tier will automatically use it.

Shield Address - Infrastructure > Cluster

5. Ensure your networking policies allow traffic to flow from the Access Tier server to backend machines running the applications and services you need to secure access to.

Pre-install Checklist

1. Ensure you have an Organization set up in Banyan and that you have admin access via the Command Center.

2. In the Banyan Command Center, navigate to Networks > Clusters and ensure you have a Cluster with a running Shield that the Netagent or Access Tier can connect to. The Clusters section of the Web Console lists all cluster parameters such as Cluster Name, Shield Address, etc.

3. In the Command Center, navigate to the My Profile tab by selecting your user name (in the bottom left corner of the Command Center). Ensure that you have generated a Refresh Token. You will need your Refresh Token if/when you use the automated bootstrap scripts to install Netagent or Access Tier.

Refresh Token - My Profile

Supported Operating Systems

The Banyan netagent binary, which is the core component of a Access Tier, can be installed on Virtual or Physical 64-bit Linux Servers on most Linux distributions.

Officially Supported: the following distros are officially supported:

• Amazon-Linux-2
• CentOS 7.x and RHEL 7.x
• Ubuntu 16.04, 18.04, 20.04

Support Deprecated: the following Linux distros are no longer supported:

• CentOS 6.x
• Ubuntu 12.04, 14.04

Download

Ensure you have assumed root privileges:

user@host$ sudo su -
root@host#

Download and extract the Tarball installer, and cd into the directory:

# create folder for the Tarball
mkdir -p /opt/banyan-packages
cd /opt/banyan-packages

# download and unzip the files
wget https://www.banyanops.com/netting/netagent-1.49.2.tar.gz
tar zxf netagent-1.49.2.tar.gz
cd netagent-1.49.2

Configure

Before you start the netagent binary you need to specify its configurations via a config.yaml file. There are two methods to do this - (a) manually edit the file, or (b) use the automated bootstrap script.

a) Manual Configuration

You can manually create the config.yaml file used to configure the Netagent.

# copy the template `config.yaml.tpl` to `config.yaml`
cp config.yaml.tpl config.yaml

# edit the `config.yaml` file to specify Shield connectivity parameters
#   shield_address    # CNAME:PORT or IP:PORT of the host running Shield
#   one_time_key      # if secure_bootstrap is set, you need to a one_time_key
#                     # provided under Settings in your Command Center

# edit the `config.yaml` file to specify Access Tier parameters
#   site_name           # display name of Site secured by Access Tier
#   site_address        # canonical domain name of the Site,
                        # ex: "corp-dns-cname.example.com"
vi config.yaml

b) Automated Bootstrap

Instead of manually creating the config.yaml file used to configure the Netagent binary, you can instead automatically “bootstrap” the file creation process. This automatic bootstrapping method is particularly useful for automated deployments.

Note: Instead of using a Refresh Token, you can now create an API key using an Access Tier scope. For more detailed instructions on how to authenticate with an API key, refer to our API documentation.

# set env vars to connect to your Command Center account
export BANYAN_API=        # API path to Command Center, such as https://net.banyanops.com/api/v1
export REFRESH_TOKEN=     # provided under Settings in your Command Center; Note: API keys can be used instead
export CLUSTER_NAME=      # specify the Cluster to register with

# set env vars to specify Access Tier parameters
export BANYAN_SITE_NAME=          # display name of Site secured by Access Tier
export BANYAN_SITE_ADDRESS=       # canonical domain name of the Site,
                                  # ex: "corp-dns-cname.example.com"
export BANYAN_SITE_DOMAIN_NAMES=  # comma-separated list of domain names that
                                  # can alias the site_address,
                                  # ex: "*.corp.example.com,web1.example.com"

# bootstrap the config file
x/bin/configure-bootstrap $REFRESH_TOKEN $CLUSTER_NAME

Install

# double check the configuration params
cat config.yaml

# run the setup script so netagent can be managed using systemctl
./setup-netagent.sh

# manage using systemctl  
sudo systemctl [start|stop|status] netagent

# on old distros (CentOS 6, Ubuntu 14) use initctl instead of systemctl
# sudo initctl [start|stop|status] netagent

Verify Installation

Once the Access Tier is installed, you can check its logs on the host at /var/log/banyan/netagent.log to ensure it is functioning as expected.

You can check the Networks > Access Tiers section of the Banyan Command Center to see the list of all the registered Access Tiers.

Infrastructure - Sites

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