Install libnet-ph-perl by entering the following commands in the terminal:
sudo apt update sudo apt install libnet-ph-perl
Perl module for accessing Ph servers
Net::PH is a Perl class implementing a simple Nameserver/Ph client as described in CCSO Nameserver -- Server-Client Protocol or RFC 2378. The Ph protocol is now mostly obsolete, replaced at most sites by LDAP. This module is only of interest if you know you need to access a Ph server.