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.
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.
Each is a reference to an array of hostnames (in order of preference), which should be used for the given protocol
Your internet domain name
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"
)
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
There is no firewall
USER user@remote.host
PASS pass
USER fwuser
PASS fwpass
USER user@remote.host
PASS pass
USER fwuser
PASS fwpass
SITE remote.site
USER user
PASS pass
USER fwuser
PASS fwpass
OPEN remote.site
USER user
PASS pass
USER user@fwuser@remote.site
PASS pass@fwpass
USER fwuser@remote.site
PASS fwpass
USER user
PASS pass
USER user@remote.host
PASS pass
AUTH fwuser
RESP fwpass
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.
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
If true then make test
may attempt to connect to hosts given in the configuration.
If true then Configure
will check each hostname given that it exists
$Id: //depot/libnet/Net/Config.pm#17 $
7 POD Errors
The following errors were encountered while parsing the POD:
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Expected text after =item, not a number
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