FreeBSD firewall has a default rule numbered 65535, which is "allow all from any to any" or "deny all from any to any" depending on a kernel option [IPFIREWALL_DEFAULT_TO_ACCEPT], when this option is set you will have an open system. You can enable nat and firewall too, and define different rules for each interface, your web server should not be affected. Try these lines for your server:
For detailed information see ipfw man page and natd man page
hi
i got a problem. I use a fbsd box to share my (DSL)internet connection.
I got 2 networkcards in my fbsd box, but my networkcard 1 (to my modem) always go out. the led don't burn anymore and I lose my connection to the internet :(
but my networkcard2 (to my local network) doesn't go out,... (2 Replies)
HI
i'm compiling my kernel with the support of this chipset.
In FreeBSD 4.2 and 4.3 I got no problem with the kernel, but with 4.4 I just can't get the kernel compiled with the soundcard support.
i added this to my kernel
device pcm
device snd
something wrong... (2 Replies)
FBSD 4.6
How do I colorize my konsole to see directories etc. Am able to get color in the shell with ls -GF in my .bashrc. But color does not show in KDE3 Konsole (Xwindows) for some reason.FBSD 4.6 (1 Reply)
Is there a general rule I can apply when examining/editing ipfw entries?
Also, does each new entry have to have a unique rule number?
And, I think I can write a script to block code red infected machines (though I'm not sure it would do more than slim down my web server error message log),... (0 Replies)
Hi folks,
I am a Mac User, and have little knowledge on IPFW.
I have a set up at home where my computer (with 2 ethernet cards and static IP adresses) serves Internet to my family's computers.
I have already a script that will run automatically at login and called from Cron at certain... (2 Replies)
I'm trying to establish a jail on a FBSD 6.1 system and have a couple of questions on bringing up the daemon.
Under the jail man page there are two user flags that I am unclear on,
-u username The user name from host environment as whom the command
should run.
-U... (1 Reply)
Hi!
I've already posted this on the freebsd-questions mailing list, but I thought I could try it here too.
I'm using FreeBSD 7.0 with IPFW DUMMYNET enabled.
I've got a problem with creating a ruleset, which allows me to limit the overall bandwidth of a link and afterwards pass the packets... (0 Replies)
Hello,
I have a little problem with my server configuration.
So: I have two PC's with DHCP enable and both of them have two NIC's.
PC1 - le0 ADSL
PC1 - le1 192.168.10.1
PC2 - le0 192.168.10.10
PC2 - le1 192.168.20.1
One NIC on PC1 is connected to ADSL, another one have IP address... (3 Replies)
Under Mountain Lion, I want logs from ipfw sent to ipfw.log instead of dumped in system.log I've tried to figure out how OSX handles logs, but... after going back and forth between a syslog.conf which does little if anything, a newsyslog.conf that seems to only handle rotation, an asl.conf that... (3 Replies)
Discussion started by: jnojr
3 Replies
LEARN ABOUT DEBIAN
ipacct
IPFW(4) BSD Kernel Interfaces Manual IPFW(4)NAME
ipfw -- IP packet filter and traffic accounting
SYNOPSIS
To compile ipfw into the kernel, place the following option in the kernel configuration file:
options IPFIREWALL
Other kernel options related to ipfw which may also be useful are:
options IPFIREWALL_DEFAULT_TO_ACCEPT
options IPFIREWALL_FORWARD
options IPFIREWALL_VERBOSE
options IPFIREWALL_VERBOSE_LIMIT=100
To load ipfw as a module at boot time, add the following line into the loader.conf(5) file:
ipfw_load="YES"
DESCRIPTION
The ipfw system facility allows filtering, redirecting, and other operations on IP packets travelling through network interfaces.
The default behavior of ipfw is to block all incoming and outgoing traffic. This behavior can be modified, to allow all traffic through the
ipfw firewall by default, by enabling the IPFIREWALL_DEFAULT_TO_ACCEPT kernel option. This option may be useful when configuring ipfw for
the first time. If the default ipfw behavior is to allow everything, it is easier to cope with firewall-tuning mistakes which may acciden-
tally block all traffic.
To enable logging of packets passing through ipfw, enable the IPFIREWALL_VERBOSE kernel option. The IPFIREWALL_VERBOSE_LIMIT option will
prevent syslogd(8) from flooding system logs or causing local Denial of Service. This option may be set to the number of packets which will
be logged on a per-entry basis before the entry is rate-limited.
Policy routing and transparent forwarding features of ipfw can be enabled by IPFIREWALL_FORWARD kernel option.
The user interface for ipfw is implemented by the ipfw(8) utility, so please refer to the ipfw(8) manpage for a complete description of the
ipfw capabilities and how to use it.
SEE ALSO setsockopt(2), divert(4), ip(4), ipfw(8), sysctl(8), syslogd(8), pfil(9)BSD September 1, 2006 BSD