---
name: "ipacct"
section: "4"
platform: "linux"
package: "freebsd-manpages"
version: "6.0-5"
release: "Debian 4.0 (Etch)"
platforms: ["linux", "freebsd"]
url: "https://new.carta.tech/ipacct"
---

# ipacct(4)

IP packet filter and traffic accounting

## NAME

**ipfw** – IP packet filter and traffic accounting

## DESCRIPTION

The **ipfw** system facility allows filtering, redirecting, and other operations on IP packets travelling through network interfaces.

The user interface for **ipfw** is implemented by the [ipfw(8)](/ipfw/8.md) utility, so please refer to the [ipfw(8)](/ipfw/8.md) manpage for a complete description of the **ipfw** capabilities and how to use it.

### Kernel Options

The following options in the kernel configuration file are related to **ipfw** operation:

- IPFIREWALL

  enable **ipfw**

- IPFIREWALL\_VERBOSE

  enable **ipfw** logging

- IPFIREWALL\_VERBOSE\_LIMIT

  limit **ipfw** logging

- IPDIVERT

  enable [divert(4)](/divert/4.md) sockets

## SEE ALSO

[setsockopt(2)](/setsockopt/2.md), [divert(4)](/divert/4.md), [ip(4)](/ip/4.md), [ipfw(8)](/ipfw/8.md), [sysctl(8)](/sysctl/8.md), [syslogd(8)](/syslogd/8.md), [pfil(9)](/pfil/9.md)