net::config(3)

NAME

Net::Config - Local configuration data for libnet

SYNOPSYS

use Net::Config qw(%NetConfig);

DESCRIPTION

"Net::Config" holds configuration data for the modules in
the libnet distribuion. 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_prefered_host" ],
ph_hosts => [ "my_ph_server" ],; }
__END__

METHODS

"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.

NetConfig VALUES

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 (NOT 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 avail
able. 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; � 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_pasive: FTP servers normally work on a non-passive mode. That
is when you want to transfer data you have to tell the
server the address and port to connect to.; With some firewalls this 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 true 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 true 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 & test ing 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
$Id: //depot/libnet/Net/Config.pm#17 $

docs.sk