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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. Right-click and select Properties from the menu.

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 Ports

Port Number Type Inbound/

Outbound

(I/O)

Details

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 Jetdirect-connected devices use Service Location Protocol

(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

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