The following tables show the User Account and Authentication (UAA) internal network communication paths with other VMware Tanzu Application Service for VMs (TAS for VMs) components.
For more information about UAA, see User Account and Authentication (UAA) Server.
Inbound communications
The following table lists network communication paths that are inbound to UAA:
| Source VM | Destination VM | Port | Transport Layer Protocol | App Layer Protocol | Security and Authentication |
|---|---|---|---|---|---|
| cloud_controller | uaa | 8443 | TCP | HTTPS | OAuth 2.0 or none* |
| diego_brain (SSH Proxy) | uaa | 443 | TCP | HTTPS | OAuth 2.0 |
| loggregator_trafficcontroller | uaa | 8443 | TCP | HTTPS | TLS |
| mysql_monitor | uaa | 8443 | TCP | HTTPS | OAuth |
| router | uaa | 8443 | TCP | HTTPS | OAuth 2.0 |
*The authentication method depends on the type of request.
Outbound communications: Internal to TAS for VMs
The following table lists network communication paths that are outbound from UAA:
| Source VM | Destination VM | Port | Transport Layer Protocol | App Layer Protocol | Security and Authentication |
|---|---|---|---|---|---|
| uaa | mysql_proxy* | 3306 | TCP | MySQL | MySQL authentication** |
| uaa (Route Registrar) | nats | 4222 | TCP | NATS | Basic authentication |
*Applies only to deployments where internal MySQL is selected as the database.
** MySQL authentication uses the MySQL native password method.
Outbound communications: External to TAS for VMs
The following table lists network communication paths from UAA that are outbound to external systems:
| Source VM | Destination VM | Port | Transport Layer Protocol | App Layer Protocol | Security and Authentication |
|---|---|---|---|---|---|
| uaa | LDAP | LDAP server communication port | TCP | LDAP/LDAPS | Basic authentication (LDAP bind) |
| uaa | SAML/OIDC | 80 or 443 (HTTP port) | TCP | HTTP/HTTPS | Key |
BOSH DNS communications
By default, TAS for VMs components and app containers look up services using the BOSH DNS service discovery mechanism. To support this lookup, BOSH Director co-locates a BOSH DNS server on every deployed VM. For more information, see BOSH DNS network communications.
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