Install Banyan Access Tier using DEB/RPM packages

Install the Access Tier on Virtual or Physical 64-bit Linux Servers, On-Prem or Cloud

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 Access Tiers across multiple sites, you can further scope the subdomains into *.east.corp.example.com, *.west.corp.example.com, etc.

  3. Expose the following ports to the Internet for use for inbound connections to the Access Tier:
    • Port 443 (HTTPS)
    • Port 8443 (for non-HTTPS TCP traffic such as SSH or RDP)
  1. Ensure that Access Tier can make an outbound TCP connection to its Shield (Cluster Coordinator) to register with the Command Center, receive Policies, and send Event data. You can find the Shield Address for your Access Tier in the Cluster Settings page.

Shield Address - Infrastructure > Cluster

  1. Ensure that Access Tier can make an outbound HTTPS connection via port 443 to the Command Center. If you use automated bootstrapping to configure the Access Tier, the install script will make an API call to https://{ccname}.console.banyanops.com/api/v1/… to obtain a one-time-key required for installation.

  2. Ensure that Access Tier can make an outbound HTTPS connection via port 443 to the Command Center TrustProvider component. In order to authenticate OIDC JWT tokens used for web access, the Access Tier will need to obtain JSON Web Key Set (JWKS) containing public keys from https://{orgname}.trust.banyanops.com/v2/.well-known/jwks.json.

  3. 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.

The netagent binary supports Egress Proxy settings, so the outbound connections from Access Tier can traverse your Egress Proxy as required.

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 Infrastructure > 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 User Settings > My Profile and ensure 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

If you’re running an non-standard distro or a custom kernel, please contact us for tailored installation instructions.

Download and Extract

Ensure you have assumed root privileges:

user@host$ sudo su -
root@host#

On CentOS/RHEL hosts, grab the RPM package:

# add the Banyan RPM repo
yum-config-manager --add-repo https://www.banyanops.com/onramp/repo/
rpm --import https://www.banyanops.com/onramp/repo/RPM-GPG-KEY-banyan

# install it
yum install banyan-netagent-1.37.0

On Debian/Ubuntu hosts, grab the DEB package:

# add the Banyan DEB repo
curl https://www.banyanops.com/onramp/deb-repo/banyan.key | apt-key add -
apt-add-repository "deb https://www.banyanops.com/onramp/deb-repo xenial main"

# install it
apt install banyan-netagent=1.37.0

Then, cd into /opt/banyan-packages directory, extract the Tarball installer that has been placed there, and cd into the directory:

cd /opt/banyan-packages

tar zxf netagent-1.37.0.tar.gz
cd netagent-1.37.0

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.

# 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
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 Infrastructure > Sites section of the Banyan Command Center to see the list of all the registered Access Tiers.

Infrastructure - Sites

Last modified: Jul 22, 2021