1 Currently only operating systems running on Linux kernels with the option
2 CONFIG_PACKET_MMAP enabled. This feature can be found even back to the days of
3 2.4 kernels. Most operating systems ship pre-compiled kernels that have this
4 config option enabled and even the latest kernel versions got rid of this
5 option and have this functionality already built-in. However, we recommend a
6 kernel >= 2.6.31, because the TX_RING is officially integrated since then. In
7 any case, if you have the possibility, consider getting the latest kernel from
8 Linus' Git repository, tweak and compile it, and run this one!
10 A note for distribution package maintainers can be found at the end of the file.
12 What additional tools are required to build netsniff-ng?
15 - flex, bison (bpfc, trafgen)
17 What libraries are required?
19 - libncurses (ifpps, flowtop)
20 - libGeoIP >=1.4.8 (astraceroute, flowtop, netsniff-ng)
21 - libz (astraceroute, flowtop, netsniff-ng)
23 - libnetfilter-conntrack (flowtop)
24 - libpcap (netsniff-ng, for tcpdump-like filters)
26 - libnl3 (netsniff-ng, trafgen)
28 What additional tools are recommended after the build?
34 It is common, that these libraries are shipped as distribution packages
35 for an easy installation. We try to keep this as minimal as possible.
37 One-liner installation for *all* dependencies on Debian:
39 $ sudo apt-get install ccache flex bison libnl-3-dev \
40 libnl-genl-3-dev libgeoip-dev libnetfilter-conntrack-dev \
41 libncurses5-dev liburcu-dev libnacl-dev libpcap-dev \
44 One-liner installation for *all* dependencies on Fedora:
46 $ sudo yum install ccache flex bison ccache libnl3-devel \
47 GeoIP-devel libnetfilter_conntrack-devel ncurses-devel \
48 userspace-rcu-devel nacl-devel libpcap-devel zlib-devel
50 After downloading the netsniff-ng toolkit, you should change to the
51 repository root directory:
55 The installation (deinstallation) process done by make is fairly simple:
62 (or for both at once: # make mrproper)
64 You can also build only a particular tool, e.g.:
67 # make trafgen_install
69 (# make trafgen_distclean)
70 ($ make trafgen_clean)
72 Currently mausezahn is experimental and not included in the default repository
75 $ git pull origin with-mausezahn
77 This means if you want to use mausezahn, you have to execute 'make mausezahn'
78 for a build. This will be changed at the time when we have cleaned up and
79 fixed the imported code.
81 If you want to build all tools, but curvetun (i.e. because you don't need
82 the tunneling software and the NaCl build process lasts quite long):
85 # make install_allbutcurvetun
89 In order to build curvetun, libnacl must be built first. A helper script
90 called build_nacl.sh is there to facilitate this process. If you want to
91 build NaCl in the directory ~/nacl, the script should be called this way:
94 $ ./build_nacl.sh ~/nacl
96 There's also an abbreviation for this by simply typing:
100 This gives an initial output such as "Building NaCl for arch amd64 on host
101 fuuubar (grab a coffee, this takes a while) ...". If the automatically
102 detected architecture (such as amd64) is not the one you intend to compile
103 for, then edit the (cc="gcc") variable within the build_nacl.sh script to
104 your cross compiler. Yes, we know, the build system of NaCl is a bit of a
105 pain, so you might check for a pre-built package from your distribution in
106 case you are not cross compiling.
108 If NaCl already has been built on the target, it is quicker to use
109 nacl_path.sh this way:
112 $ ./nacl_path.sh ~/nacl/build/include/x86 ~/nacl/build/lib/x86
114 When done, netsniff-ng's build infrastructure will read those evironment
115 variables in order to get the needed paths to NaCl.
117 If you're unsure with any make targets, check out: make help
119 In order to run the toolkit as a normal user, set the following privilege
120 separation after the build/installation:
122 $ sudo setcap cap_net_raw,cap_ipc_lock,cap_sys_admin,cap_net_admin=eip {toolname}
124 For cross-compiling netsniff-ng, the process is faily simple. Assuming you
125 want to build netsniff-ng for the Microblaze architecture, update the PATH
126 variable first, e.g.:
128 $ export PATH=<cc-tools-path>/microblazeel-unknown-linux-gnu/bin:$PATH
130 And then, build the toolkit like this:
132 $ make CROSS_COMPILE=microblazeel-unknown-linux-gnu- \
133 CROSS_LD_LIBRARY_PATH=<cc-lib-search-path>
135 Note that some adaptations might be necessary regarding the CFLAGS, since not
136 all might be supported by a different architecture.
138 For doing a debug build of the toolkit with less optimizations and non-stripped
143 For debugging the build system, full commands are shown if every make target is
148 Concerning packaging the toolkit for a Linux distribution, by default,
149 netsniff-ng has some architecture-specific tuning options enabled that don't
150 belong into a package binary of a distribution. Hence, you might want to adapt
151 some build-related things before starting to package the toolkit. All
152 necessary things (e.g., CFLAGS,WFLAGS) can be found in Makefile. Hence,
153 you need to adapt it there. You can then build and install the toolkit into
154 a prefixed path like:
156 $ make PREFIX=<path-prefix-for-package>
157 $ make PREFIX=<path-prefix-for-package> install
159 Thanks for maintaining netsniff-ng in your distribution. Further questions
160 will be answered on the public mainling list.