Net::Config(3p) Perl Programmers Reference Guide Net::Config(3p)
Net::Config - Local configuration data for libnet
use Net::Config qw(%NetConfig);
"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__
"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.
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
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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
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
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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 com-
mand. 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 & 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
$Id: //depot/libnet/Net/Config.pm#17 $
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