This file is indexed.

/usr/share/doc-base/netfilter-hacking is in iptables-dev 1.4.12-1ubuntu4.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

1
2
3
4
5
6
7
8
9
Document: netfilter-hacking
Title: Linux netfilter Hacking HOWTO
Author: Rusty Russell
Abstract: This document describes the netfilter architecture for Linux, how to hack it, and some of the major systems which sit on top of it, such as packet filtering, connection tracking and Network Address Translation.
Section: Help/HOWTO

Format: HTML
Index: /usr/share/doc/iptables-dev/html/netfilter-hacking-HOWTO.html
Files: /usr/share/doc/iptables-dev/html/netfilter-hacking-HOWTO-*.html