28 sep. 2006 · This chapter explains how to test whether a pre-defined policy is being enforced correctly, and how to find and correct mistakes when it isn't.
The pf(4) packet filter modifies, drops or passes packets according to rules or definitions specified in pf.conf.
In order to log packets passing through PF, the log keyword must be used. The log keyword causes all packets that match the rule to be logged.
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By storing information about each connection in a state table, PF is able to quickly determine if a packet passing through the firewall belongs to an already ...
Packet Filter (from here on referred to as PF) is OpenBSD's system for filtering TCP/IP traffic and doing Network Address. Translation. PF is also capable ...
A pseudo-device, /dev/pf, allows userland processes to control the behavior of the packet filter through an ioctl(2) interface.
The pfctl utility configures rulesets and parameters, and retrieves status info from PF. pfctl -e Enable PF. pfctl -d Disable PF. pfctl -F all -f /etc/pf.conf ...
PF is enabled by default. It can be disabled at boot with the rcctl(8) tool: # rcctl disable pf Reboot the system to have it take effect.
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In OpenBSD 4.1 and later, the default flags S/SA are applied to all TCP filter rules. state. Specifies whether state information is kept on packets matching ...
Fler frågor du kan ställa
What is the basic PF firewall?
What is the default PF configuration file?
What is pflog?
What is PF FreeBSD?
8 OpenBSD pf.conf manual page - http://www.openbsd.org/cgi-bin/man.cgi?query=pf.conf&apropos=0&sektion=0. GSEC v 1.4b practical assignment page 12 / 25.