Net::Config(3p) Perl Programmers Reference Guide Net::Config(3p) #
Net::Config(3p) Perl Programmers Reference Guide Net::Config(3p)
NNAAMMEE #
Net::Config - Local configuration data for libnet
SSYYNNOOPPSSIISS #
use Net::Config qw(%NetConfig);
DDEESSCCRRIIPPTTIIOONN #
"Net::Config" holds configuration data for the modules in the libnet
distribution. During installation you will be asked for these values.
The configuration data is held globally in a file in the perl
installation tree, but a user may override any of these values by
providing their own. This can be done by having a ".libnetrc" file in
their home directory. This file should return a reference to a HASH
containing the keys described below. For example
# .libnetrc
{
nntp_hosts => [ "my_preferred_host" ],
ph_hosts => [ "my_ph_server" ],
}
END #
CCllaassss MMeetthhooddss “Net::Config” defines the following methods. They are methods as they are invoked as class methods. This is because “Net::Config” inherits from “Net::LocalCfg” so you can override these methods if you want.
"requires_firewall($host)"
Attempts to determine if a given host is outside your firewall.
Possible return values are.
-1 Cannot lookup hostname
0 Host is inside firewall (or there is no ftp_firewall entry)
1 Host is outside the firewall
This is done by using hostname lookup and the "local_netmask" entry
in the configuration data.
NNeettCCoonnffiigg VVaalluueess nntp_hosts snpp_hosts pop3_hosts smtp_hosts ph_hosts daytime_hosts time_hosts Each is a reference to an array of hostnames (in order of preference), which should be used for the given protocol
inet_domain
Your internet domain name
ftp_firewall
If you have an FTP proxy firewall (NNOOTT an HTTP or SOCKS firewall)
then this value should be set to the firewall hostname. If your
firewall does not listen to port 21, then this value should be set to
"hostname:port" (eg "hostname:99")
ftp_firewall_type
There are many different ftp firewall products available. But
unfortunately there is no standard for how to traverse a firewall.
The list below shows the sequence of commands that Net::FTP will use
user Username for remote host
pass Password for remote host
fwuser Username for firewall
fwpass Password for firewall
remote.host The hostname of the remote ftp server
0 There is no firewall
1
USER user@remote.host
PASS pass
2
USER fwuser
PASS fwpass
USER user@remote.host
PASS pass
3
USER fwuser
PASS fwpass
SITE remote.site
USER user
PASS pass
4
USER fwuser
PASS fwpass
OPEN remote.site
USER user
PASS pass
5
USER user@fwuser@remote.site
PASS pass@fwpass
6
USER fwuser@remote.site
PASS fwpass
USER user
PASS pass
7
USER user@remote.host
PASS pass
AUTH fwuser
RESP fwpass
ftp_ext_passive
ftp_int_passive
FTP servers can work in passive or active mode. Active mode is when
you want to transfer data you have to tell the server the address and
port to connect to. Passive mode is when the server provide the
address and port and you establish the connection.
With some firewalls active mode does not work as the server cannot
connect to your machine (because you are behind a firewall) and the
firewall does not re-write the command. In this case you should set
"ftp_ext_passive" to a _t_r_u_e value.
Some servers are configured to only work in passive mode. If you have
one of these you can force "Net::FTP" to always transfer in passive
mode; when not going via a firewall, by setting "ftp_int_passive" to
a _t_r_u_e value.
local_netmask
A reference to a list of netmask strings in the form "134.99.4.0/24".
These are used by the "requires_firewall" function to determine if a
given host is inside or outside your firewall.
The following entries are used during installation & testing on the
libnet package
test_hosts
If true then "make test" may attempt to connect to hosts given in the
configuration.
test_exists
If true then "Configure" will check each hostname given that it
exists
EEXXPPOORRTTSS #
The following symbols are, or can be, exported by this module:
Default Exports
%NetConfig.
Optional Exports
_N_o_n_e.
Export Tags
_N_o_n_e.
KKNNOOWWNN BBUUGGSS #
_N_o_n_e.
AAUUTTHHOORR #
Graham Barr <gbarr@pobox.com <mailto:gbarr@pobox.com>>.
Steve Hay <shay@cpan.org <mailto:shay@cpan.org>> is now maintaining
libnet as of version 1.22_02.
CCOOPPYYRRIIGGHHTT #
Copyright (C) 2000 Graham Barr. All rights reserved.
Copyright (C) 2013-2014, 2016, 2020 Steve Hay. All rights reserved.
LLIICCEENNCCEE #
This module is free software; you can redistribute it and/or modify it
under the same terms as Perl itself, i.e. under the terms of either the
GNU General Public License or the Artistic License, as specified in the
_L_I_C_E_N_C_E file.
VVEERRSSIIOONN #
Version 3.14
DDAATTEE #
23 Dec 2020
HHIISSTTOORRYY #
See the _C_h_a_n_g_e_s file.
perl v5.36.3 2023-02-15 Net::Config(3p)