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 1-1 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 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