CONFIG_NETFILTER_XT_MATCH_U32: 'u32' match support

General informations

The Linux kernel configuration item CONFIG_NETFILTER_XT_MATCH_U32:

• prompt: 'u32' match support
• type: tristate
• depends on: CONFIG_NETFILTER_ADVANCED
• defined in net/netfilter/Kconfig
• found in Linux kernels: 2.6.23–2.6.39, 3.0–3.19, 4.0–4.20, 5.0–5.19, 6.0–6.8, 6.9-rc+HEAD
• modules built: xt_u32

Help text

u32 allows you to extract quantities of up to 4 bytes from a packet, AND them with specified masks, shift them by specified amounts and test whether the results are in any of a set of specified ranges. The specification of what to extract is general enough to skip over headers with lengths stored in the packet, as in IP or TCP header lengths.

Details and examples are in the kernel module source.

Hardware

LKDDb

Raw data from LKDDb:

• lkddb module xt_u32 CONFIG_NETFILTER_XT_MATCH_U32 : net/netfilter/Kconfig : "'u32' match support" # in 2.6.23–2.6.39, 3.0–3.19, 4.0–4.20, 5.0–5.19, 6.0–6.8, 6.9-rc+HEAD

Sources

This page is automaticly generated with free (libre, open) software lkddb(see lkddb-sources).

The data is retrived from:

• Linux kernel
• Linux Kernel Driver DataBase (LKDDb)

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