It doesn't have to do with not know or maybe it does. A question I have is why would you want to setup your connection this way? If you are going to allow a device to open ports as needed then why do you need a firewall?
I would suggest you setup a firewall to allow the ports you need to pass and forget about random ports opening.
As to your firewall rule above, if you are going to allow any IP Address then the rule should look like this:
I would highly suggest that you start using STATEFUL packet filtering. You can take a look at the following Tutorial for information.
Hi
I am trying to write a script to automatically use a predefined program to open a file according to its extension... But I don't know how to pass "programeta" ... :confused:
while ]; do
case $1 in
-pdf ) programeta="kpdf"
shift 1 ;;
... (1 Reply)
Good day,
I'm new to linux environment...Is there any scripts available for me to check ports (lets say port 80 and 21) through shell with just a single commandline?
Any response is very much appreciated..
thanks (4 Replies)
Hello I am new to Ubuntu and I have a quick question about router settings. When I connect directly to my cable Internet ubuntu works fine. But when I connect it to my router I can't get connectivity. I am using ubuntu 9.04 and am using D-link DI-604 router. I have reset both my router and modem... (0 Replies)
I set up remote printing on a clients Unix server to my Windows XP USB printer. My USB printer is connected directly to my PC (no print server and no network input on printer). With my Win XP PC connected to my cable modem (without the router), i can do
lp -dhp842c /etc/hosts and it prints. I... (7 Replies)
Hello I am having some issues doing to routing I have 4 network cards and one is connected to a linksys router with everything turned off to give us a static ip to use for the gateway out to the internet.
Hear is what we have
We have
eth2 with ip address of 192.168.1.2 / sub 255.255.255.0... (0 Replies)
hi,
I am using red hat .I want that when ever the user login in GUI interface the terminal windows automatically open and then the user want to logout it 1st close the terminal and then login. There is a file in #ls -a i.e .bashrc and .bash_logout
I does not know how to add my... (0 Replies)
Hi,
I have two Cent OS Linux systems and one Ubuntu OS system contains two Ethernet Cards.
I need to create two networks by using Ubuntu sys as router. One network need to configure in IPv4 addresses and another network should configure in IPv6 addresses. Please help me how to configure two... (0 Replies)
hi all. and sorry for the random question, but this sparkled a raging flame-war at work and i want more points of view
situation
a router, with linux of some sort,
dhcp client requesting for ip in wan1 (as usual with wan ports)
dhcp server listening in lan1, and assigning ip (as usual... (9 Replies)
Hi Friends,
Every I try to open a vi window vim help.txt automatically opens evertime.
After doing ZZ or :q! also the same page opens automatically.
How to stop this? Is it machine specific ? Other users who are opening the same servers and files are not facing this issue.
Thanks... (1 Reply)
Hi Friends,
Every I try to open a vi window, vim help.txt automatically opens evertime.
After doing ZZ or :q! also the same page opens automatically.
How to stop this? Is it machine specific ? Other users who are opening the same servers and files are not facing this issue.
Thanks... (3 Replies)
Discussion started by: sudiptabhaskar
3 Replies
LEARN ABOUT DEBIAN
fwb_pf
fwb_pf(1) Firewall Builder fwb_pf(1)NAME
fwb_pf - Policy compiler for OpenBSD packet filter "pf"
SYNOPSIS
fwb_pf [-vVx] [-d wdir] [-o output.fw] [-i] -f data_file.xml object_name
DESCRIPTION
fwb_pf is a firewall policy compiler component of Firewall Builder (see fwbuilder(1)). This compiler generates code for OpenBSD Packet Fil-
ter (pf). Compiler reads objects definitions and firewall description from the data file specified with "-f" option and generates pf con-
figuration files and firewall activation script.
All generated files have names that start with the name of the firewall object. Firewall activation script has extension ".fw" and is sim-
ple shell script that flushes current policy, loads new filter and nat rules and then activates pf. PF configuration file name starts with
the name of the firewall object, plus "-pf.conf". NAT configuration file name also starts with the name of the firewall object, plus
"-nat.conf". For example, if firewall object has name "myfirewall", then compiler will create three files: "myfirewall.fw", "myfirewall-
pf.conf", "myfirewall-nat.conf".
The data file and the name of the firewall objects must be specified on the command line. Other command line parameters are optional.
OPTIONS -f FILE
Specify the name of the data file to be processed.
-o output.fw
Specify output file name
-d wdir
Specify working directory. Compiler creates firewall activation script and PF configuration files in this directory. If this
parameter is missing, then all files will be placed in the current working directory.
-v Be verbose: compiler prints diagnostic messages when it works.
-V Print version number and quit.
-i When this option is present, the last argument on the command line is supposed to be firewall object ID rather than its name
-x Generate debugging information while working. This option is intended for debugging only and may produce lots of cryptic messages.
NOTES
Support for PF has been introduced in version 1.0.1 of Firewall Builder
Supported features:
o both pf.conf and nat.conf files are generated
o negation in policy and NAT rules
o grouping in "from", "to" and ports using '{' '}' syntax
o if checkbox "Scrub" is checked in the rule options dialog, and rule's action is Accept, the compiler generates two (almost) identi-
cal rules: first with action 'scrub' and the second with action 'pass quick'
o stateful inspection in individual rule can be turned off in rule options dialog. By default compiler adds "keep state" or "modulate
state" to each rule with action 'pass'
o rule options dialog provides a choice of icmp or tcp rst replies for rules with action "Reject"
o compiler adds flag "allow-opts" if match on ip options is needed
o compiler can generate rules matching on TCP flags
o compiler can generate script adding ip aliases for NAT rules using addresses that do not belong to any interface of the firewall
o compiler always adds rule "block quick all" at the very bottom of the script to ensure "block all by default" policy even if the
policy is empty.
o Address ranges in both policy and NAT
Features that are not supported (yet)
o custom services
What will not be supported (at least not anytime soon)
o policy routing
URL
Firewall Builder home page is located at the following URL: http://www.fwbuilder.org/
BUGS
Please report bugs using bug tracking system on SourceForge:
http://sourceforge.net/tracker/?group_id=5314&atid=105314
SEE ALSO fwbuilder(1), fwb_ipt(1), fwb_ipf(1)FWB fwb_pf(1)