HP Web Jetadmin Software Manuale Utente Scaricare il pdf (Pagina 9)

Certificates and backup/restore procedures

HP Web Jetadmin provides backup and restore scripts and instructions for qualifying and using them.

These scripts are designed to help the administrator save time when a catastrophic hardware,

operating system (OS), or application failure occurs. The backup and restore scripts act on the

HP Web Jetadmin database and the HP Web Jetadmin settings files. Most software settings and

device data can be restored.

The certificate used to enforce HTTPS/SSL communications is not retained or restored during the

backup and restore processes. The certificate is installed in the local Windows certificate store. The

following outcomes are possible when using the HP Web Jetadmin restore scripts on a server that has

HTTPS/SSL enabled:

• If HP Web Jetadmin is restored to a host where the certificate is already installed and if the

application settings have SSL enabled, HP Web Jetadmin enforces SSL using that certificate.

• If HP Web Jetadmin is restored to a host where the certificate is not installed and if SSL is enabled

through application settings, HP Web Jetadmin runs without SSL enforced. A certificate must be

installed on the server using Tools > Options > Application Management > Certificates as

described previously. Always test to make sure that SSL is enabled and being enforced when

performing an HP Web Jetadmin restore.

Digital signatures

HP Web Jetadmin uses digital signatures for all of its packages and plug-in descriptor files to ensure

file integrity and authenticity. All files downloaded from hp.com for product updates are digitally

signed. HP Web Jetadmin verifies the digital signatures by using a Verisign-managed root certification

authority. During the application installation, this root CA is installed in the Trusted Root Certification

Authorities location in the Local Machine certificate store. Files and packages are signed by a

certificate derived from this CA chain. If authentication of a package or file fails, HP Web Jetadmin

refuses to load it. This industry-standard infrastructure also uses Certificate Revocation Lists (CRLs) to

track any certificates that might have been revoked. If necessary, the most up-to-date CRL can be

manually obtained at:

http://onsitecrl.verisign.com/HewlettPackardCompanyEIPPrintingDeviceCSID/LatestCRL.crl

Network ports

HP Web Jetadmin uses the following 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 (EWS) 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.

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HP Web Jetadmin Software Manuale Utente Pagina 9

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