|requires_firewall ( HOST )||
Attempts to determine if a given host is outside your firewall. Possible
return values are.
This is done by using hostname lookup and the local_netmask entry in the configuration data.
The following entries are used during installation & testing on the libnet package
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 (<B>NOTB> 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 firstname.lastname@example.org PASS pass 2 USER fwuser PASS fwpass USER email@example.com 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@firstname.lastname@example.org PASS pass@fwpass 6 USER email@example.com PASS fwpass USER user PASS pass 7 USER firstname.lastname@example.org 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 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 "220.127.116.11/24". These are used by the requires_firewall function to determine if a given host is inside or outside your firewall.
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
Graham Barr <email@example.com>
Steve Hay <firstname.lastname@example.org> is now maintaining libnet as of version 1.22_02
Versions up to 1.11 Copyright (c) 1998-2011 Graham Barr. All rights reserved. Changes in Version 1.11_01 onwards Copyright (C) 2013-2014 Steve Hay. All rights reserved.
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 LICENCE file.
|perl v5.20.3||NET::CONFIG (3)||2016-01-05|