Configure the HP Web Jetadmin Service to Restart Automatically
It is recommended to configure HP Web Jetadmin to restart automatically whenever the HP Web Jetadmin service fails. If, for example, the database is inaccessible, the HP Web Jetadmin service will be stopped and then automatically restarted. The HP Web Jetadmin service will wait for the database to become accessible and then the HP Web Jetadmin service becomes live.
To configure the HP Web Jetadmin service to restart automatically, follow these steps.
1.Access the Windows Control Panel and select Administrative Tools.
2.Select Services and then select HPWJA Service.
3.
4.Click the Recovery tab. For the First failure, Second failure, and Subsequent failures, select Restart the service.
5.Click OK.
NOTE: HP Web Jetadmin installs an additional service named HPWSProAdapter. The HPWSProAdapter service facilitates communication with certain HP device models and must be left running. You must also perform the steps in this section for the HPWSProAdapter service.
Ports
HP Web Jetadmin listens continuously on several ports and opens other ports for specific functionality. The following are the ports that HP Web Jetadmin uses.
Table 1-1 Ports
Port Number | Type | Inbound/ | Details |
|
| Outbound |
|
|
| (I/O) |
|
|
|
|
|
69 | UDP | I | TFTP Incoming Port: HP Web Jetadmin uses this port as a staging area for |
|
|
| firmware images during HP Jetdirect firmware updates. Through SNMP, |
|
|
| HP Web Jetadmin triggers HP Jetdirect to retrieve firmware through this |
|
|
| port. |
|
|
|
|
80 | TCP | O | HP Web Jetadmin uses this port to qualify the link to the HP Embedded Web |
|
|
| Server on the device. |
|
|
|
|
161 | UDP | O | SNMP: HP Web Jetadmin and other management applications use SNMP to |
|
|
| communicate with and manage devices. HP Web Jetadmin uses this port on |
|
|
| the printer to issue Set and Get commands to the SNMP agent. |
|
|
|
|
427 | UDP | I | SLP Listen: HP |
|
|
| (SLP) to advertise their existence. When the passive SLP discovery feature |
|
|
| is enabled on HP Web Jetadmin, devices send multicast packets to this port |
|
|
| on the HP Web Jetadmin server. |
|
|
|
|
443 | TCP | O | Web Services (HTTPS): HP Web Jetadmin uses this port to manage some of |
|
|
| the newer HP devices. HP Web Jetadmin sends device configurations as |
|
|
| well as queries to this port. |
|
|
|
|
445 | UDP | O | WMI Communication: Windows Management Instrumentation (WMI) is a |
|
|
| protocol on Microsoft Windows hosts. HP Web Jetadmin uses WMI to detect |
|
|
| the presence of a printer on the Windows host. This is one of the ports on |
|
|
| the Windows host that WMI uses to allow communication from outside |
|
|
| servers, including servers running HP Web Jetadmin. |
|
|
|
|
ENWW | Ports 11 |
