| Port Type | Direction | Server
Adjunct
Support | Description< | Common Port Number |
| Full Feed Ports | Bidirectional | No | Standard port for clients, IGates, and servers to connect to. All
packets received on the server are sent to the client except for packets
received from the client. Similar to aprsD 10152. | 23, 10152 |
| Full Feed with History Ports | Unidirectional
(to client) | No | Same as Full Feed Ports with a pre-pended transmission of the last posit
received from each station over the last X minutes where X is defined by the
sysop and is usually 30 minutes. | 10151 |
| Message-only Ports | Bidirectional | Yes | Port only sends message data type packets to the client. It also sends posits
from the messaging station to the client. | 1314 |
| Client-only Ports | Bidirectional | Yes | Only messages addressed to the client login are
passed to the client(with associated posits). | No standard |
| User-defined Filter Ports | Bidirectional | Yes | Same as Client-only Ports with the addition of messages (and associated posits) addressed to
stations previously gated to the server by the client are passed to the client. | 14580 |
| Local-only Ports | Bidirectional | Yes | Same as User-defined Filter Ports except that all data from the client remains
local to the server. This is for subnet servers such as FireNet. | No standard |
| Read-only Ports | Unidirectional
(to client) | Yes | Port only passes packets that the server adjunct (such as APRS Filter) approves. | No standard |
| Filtered History Ports | Unidirectional
(to client) | Yes | Same as Read-only Ports with a pre-pended transmission of the last posit
received from each station over the last X minutes where X is defined by the
sysop and is usually 30 minutes. Port only passes packets that the
server adjunct approves. | No standard |
| Multicast Ports | Unidirectional
(to client) | No | Multicast transmission of all packets received on the server. | No standard |
| UDP Ports | Unidirectional
(to server) | No | Access for UDP applications. This port can accept packets-only from predifined IP addresses
or it can accept UDP packets containing a login line followed by an APRS packet line.
| 8080 |
| HTTP Ports | Unidirectional
(to server) | No | Access for send-only applications such as smartphones.
This port accepts HTTP POSTs or PUTs containing a login line followed by an APRS packet line.
This port also supports bidirectional WebSocket connections which appear as regular User-Defined Ports.
| 8080 |
javAPRSSrvr uses the following algorithm for determining what packets from
the client will be passed on.
- No login from client - No packets are accepted by the server nor sent to the client. Client will be disconnected after 30 seconds.
- Unverified login from client - Posits and weather packets only, and only
if from the client with TCPIP* in the header (no gated packets).
This feature is only available for non-APRS-IS servers.
- Verified login from client - All packets are accepted by the server.