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Full Discussion: Socket Problem
Top Forums Programming Socket Problem Post 48960 by DreamWarrior on Monday 22nd of March 2004 03:08:59 PM
Old 03-22-2004
All applications can talk through a firewall as the firewall is just a configurable piece of hardware or software that allows or disallows network communication based on a set of rules. The firewall is transparent to the application and the underlying socket routines used just as the many routers and switches in between the two machines are transparent. This is the nature of IP packet routing.

However, if what you are talking about is attempting to get your application's communication "through" the firewall you may want to research such things as SOCKS. Many applications can use these "proxy servers" to tunnel through a firewall by authenticating their communication through it. If this is what you want then google SOCKS and I'm sure you'll find out a lot more than can be explained here.
 

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FIREWALLD.CONF(5)						  firewalld.conf						 FIREWALLD.CONF(5)

NAME
firewalld.conf - firewalld configuration file SYNOPSIS
/etc/firewalld/firewalld.conf DESCRIPTION
firewalld.conf is loaded by firewalld during the initialization process. The file contains the basic configuration options for firewalld. OPTIONS
These are the options that can be set in the config file: DefaultZone This sets the default zone for connections or interfaces if the zone is not selected or specified by NetworkManager, initscripts or command line tool. The default zone is public. MinimalMark For some firewall settings several rules are needed in different tables to be able to handle packets in the correct way. To achieve that these packets are marked using the MARK target iptables(8) and ip6tables(8). With the MinimalMark option a block of marks can be reserved for private use; only marks over this value are used. The default MinimalMark value is 100. CleanupOnExit If firewalld stops, it cleans up all firewall rules. Setting this option to no or false leaves the current firewall rules untouched. The default value is yes or true. Lockdown If this option is enabled, firewall changes with the D-Bus interface will be limited to applications that are listed in the lockdown whitelist (see firewalld.lockdownwhitelist(5)). The default value is no or false. SEE ALSO
firewall-applet(1), firewalld(1), firewall-cmd(1), firewall-config(1), firewalld.conf(5), firewalld.direct(5), firewalld.icmptype(5), firewalld.lockdown-whitelist(5), firewall-offline-cmd(1), firewalld.richlanguage(5), firewalld.service(5), firewalld.zone(5), firewalld.zones(5) NOTES
firewalld home page at fedorahosted.org: http://fedorahosted.org/firewalld/ More documentation with examples: http://fedoraproject.org/wiki/FirewallD AUTHORS
Thomas Woerner <twoerner@redhat.com> Developer Jiri Popelka <jpopelka@redhat.com> Developer firewalld 0.3.9 FIREWALLD.CONF(5)
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