OpenSnitch is a GNU / Linux port of the Little Snitch application firewall.
THIS SOFTWARE IS WORK IN PROGRESS, DO NOT EXPECT IT TO BE BUG FREE AND DO NOT RELY ON IT FOR ANY TYPE OF SECURITY. Make sure you have a correctly configured Go>=1.8 environment, that the $ GOPATH environment variable is defined and then: The Once you installed both the daemon and the UI, you can enable the (opensnitchd And run it with: While the UI can be started just by executing the opensnitch-ui command. Rules are stored as JSON files inside the An example with a regular expression: An example whitelisting a whole process: I tried, but for very fast updates it failed bad on my configuration (failed bad=SIGSEGV), moreover I find Qt5 layout system superior and easier to use. The UI service is able to use a TCP listener instead of a UNIX socket, that means the UI service itself can be executed on any operating system, while receiving messages from a single local daemon instance or multiple instances from remote computers in the network, Therefore DBUS would have made the protocol and logic uselessly GNU / Linux specific.
#
install dependencies sudo apt-get install git libnetfilter-queue-dev libpcap-dev protobuf-compiler python3-pip go get github.com/golang/protobuf/protoc-gen-go go get -u github.com/golang/dep/cmd/dep cd
/ src / github.com / golang / dep ./install.sh
export (PATH=
$ PATH
: ($ GOPATH) / bin python3 -m pip install --user grpcio-tools
(#) clone the repository (ignore the message about no Go files being found)
go get github.com/evilsocket/opensnitch cd
/ src / github.com / evilsocket / opensnitch
(#) compile && install
make sudo make install
(#) enable opensnitchd as a systemd service and start the UI
sudo systemctl enable opensnitchd sudo service opensnitchd start opensnitch-ui
argument), the default contents of this file are:
(default_timeout
:
,
(default_action : allow
,
(default_duration) : until restart
}
default_timeout is the number of seconds after which the UI will take its default action, the default_action
can be allow or deny and the
default_duration , which indicates for how long the default action should be taken, can be (once
, until restart
or
always
persist the action as a new rule on disk.
service to run at boot time:
sudo systemctl enable opensnitchd
sudo service opensnitchd start
- rule-path folder, in the simplest cast a rule looks like this:
(created) : 19675 - - (T) : : . ( ) :
”
: 19675 - - (T) : : . : ()
(updated
,
(name) : deny-simple-www-google-analytics-l-google-com "
,
(enabled
: true
,
(action) : deny
,
(duration
: always
: {
,
(operator
(type
: simple
,
(operand) : dest.host “,
(data) : www-google-analytics.l.google.com
} } (Field) Description () created
UTC date and time of creation. update UTC date and time of the last update. name The name of the rule. enabled Use to temporarily disable and enable rules without moving their files. action Can be deny (or ) . duration For rules persisting on disk, this value is default to
always operator.type Can be simple , in which case a simple==comparison will be performed, or (regexp) if the
data (field is a regular expression to match. operator.operand What element of the connection to compare, can be one of: (true) (will always match), (process.path
(the path of the executable),
process.command (full command line, including path and arguments),
provess.env.ENV_VAR_NAME
or
dest.port . operator.data The data to compare the
operand to, can be a regular expression if type is (regexp) .
(created) : 19675 - - (T) : : . ( ) :
”
: 19675 - - (T) : : . : ()
(updated
,
(name) : deny-any-google-analytics ,
(enabled
: true
,
(action) : deny
,
(duration
: always
: {
,
(operator
(type
: regexp
,
(operand) : dest.host “,
(data) : (? i). analytics. \
google (\) . com
} }
(created) :
- - T : ( ) : ,
: 19675 - - (T) : : . ( ) :
(updated
,
(name) : allow-simple-opt-google-chrome-chrome
,
(enabled
: true
,
(action) : allow
,
(duration
: always
: {
,
(operator
(type
: simple
,
(operand) : process.path
,
(data) : / opt / google / chrome / chrome
" } }
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