proxychains-ng/README
2013-03-05 13:48:06 +01:00

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ProxyChains-NG ver 4.5 README
=============================
ProxyChains is a UNIX program, that hooks network-related libc functions
in DYNAMICALLY LINKED programs via a preloaded DLL (dlsym(), LD_PRELOAD)
and redirects the connections through SOCKS4a/5 or HTTP proxies.
It supports TCP only (no UDP/ICMP etc).
The way it works is basically a HACK; so it is possible that it doesn't
work with your program, especially when it's a script, or starts
numerous processes like background daemons or uses dlopen() to load
"modules" (bug in glibc dynlinker).
It should work with simple compiled (C/C++) dynamically linked programs
though.
If your program doesn't work with proxychains, consider using an
iptables based solution instead; this is much more robust.
Supported Platforms: Linux, BSD, Mac.
*********** ATTENTION ***********
this program can be used to circumvent censorship.
doing so can be VERY DANGEROUS in certain countries.
ALWAYS MAKE SURE THAT PROXYCHAINS WORKS AS EXPECTED
BEFORE USING IT FOR ANYTHING SERIOUS.
this involves both the program and the proxy that you're going to
use.
for example, you can connect to some "what is my ip" service
like ifconfig.me to make sure that it's not using your real ip.
ONLY USE PROXYCHAINS IF YOU KNOW WHAT YOU'RE DOING.
THE AUTHORS AND MAINTAINERS OF PROXYCHAINS DO NOT TAKE ANY
RESPONSIBILITY FOR ANY ABUSE OR MISUSE OF THIS SOFTWARE AND
THE RESULTING CONSEQUENCES.
*** Installation ***
# needs a working C compiler, preferably gcc
./configure --prefix=/usr --sysconfdir=/etc
make
[optional] sudo make install
[optional] sudo make install-config (installs proxychains.conf)
if you dont install, you can use proxychains from the build directory
like this: ./proxychains4 -f src/proxychains.conf telnet google.com 80
Changelog:
----------
Version 4.5:
- hook close() to prevent OpenSSH from messing with internal infrastructure.
this caused ssh client to segfault when proxified.
Version 4.4:
- FreeBSD port
- fixes some installation issues on Debian and Mac.
Version 4.3:
- fixes programs that do dns-lookups in child processes (fork()ed),
like irssi. to achieve this, support for compilation without pthreads
was sacrified.
- fixes thread safety for gethostent() calls.
- improved DNS handling speed, since hostent db is cached.
Version 4.2:
- fixes compilation issues with ubuntu 12.04 toolchain
- fixes segfault in rare codepath
Version 4.1
- support for mac os x (all archs)
- all internal functions are threadsafe when compiled with -DTHREAD_SAFE
(default).
Version 4.0
- replaced dnsresolver script (which required a dynamically linked "dig"
binary to be present) with remote DNS lookup.
this speeds up any operation involving DNS, as the old script had to use TCP.
additionally it allows to use .onion urls when used with TOR.
- removed broken autoconf build system with a simple Makefile.
there's a ./configure script though for convenience.
it also adds support for a config file passed via command line switches/
environment variables.
Version 3.0
- support for DNS resolving through proxy
supports SOCKS4, SOCKS5 and HTTP CONNECT proxy servers.
Auth-types: socks - "user/pass" , http - "basic".
When to use it ?
1) When the only way to get "outside" from your LAN is through proxy server.
2) To get out from behind restrictive firewall which filters outgoing ports.
3) To use two (or more) proxies in chain:
like: your_host <--> proxy1 <--> proxy2 <--> target_host
4) To "proxify" some program with no proxy support built-in (like telnet)
5) Access intranet from outside via proxy.
6) To use DNS behind proxy.
7) To access hidden tor onion services.
Some cool features:
* This program can mix different proxy types in the same chain
like: your_host <-->socks5 <--> http <--> socks4 <--> target_host
* Different chaining options supported
random order from the list ( user defined length of chain ).
exact order (as they appear in the list )
dynamic order (smart exclude dead proxies from chain)
* You can use it with most TCP client applications, possibly even network
scanners, as long as they use standard libc functionality.
pcap based scanning does not work.
* You can use it with servers, like squid, sendmail, or whatever.
* DNS resolving through proxy.
Configuration:
--------------
proxychains looks for config file in following order:
1) file listed in environment variable PROXYCHAINS_CONF_FILE or
provided as a -f argument to proxychains script or binary.
2) ./proxychains.conf
3) $(HOME)/.proxychains/proxychains.conf
4) $(sysconfdir)/proxychains.conf **
** usually /etc/proxychains.conf
Usage Example:
$ proxychains telnet targethost.com
in this example it will run telnet through proxy(or chained proxies)
specified by proxychains.conf
Usage Example:
$ proxychains -f /etc/proxychains-other.conf targethost2.com
in this example it will use different configuration file then proxychains.conf
to connect to targethost2.com host.
Usage Example:
$ proxyresolv targethost.com
in this example it will resolve targethost.com through proxy(or chained proxies)
specified by proxychains.conf
Community:
----------
#proxychains on irc.freenode.net