traffico

traffico is a collection of tools to shape traffic on a network using traffic control tc(8). It can be used via a CLI tool (traffico) or as a CNI plugin (traffico-cni). For a list of the available programs and what they do see the Built-in programs section.

The built-in programs are very opinionated and made for the needs of the authors but the framework is flexible enough to be used for other purposes. You can add programs to the bpf/ directory to extend it to other use cases.

Contact

If you have problems, questions, ideas or suggestions, please contact us by posting to https://github.com/leodido/traffico/issues.

Download

To download the very latest source do this:

git clone https://github.com/leodido/traffico.git

Authors

• Leonardo Di Donato
• Lorenzo Fontana

Usage

Traffico can be either used standalone or as a CNI plugin.

traffico

traffico is a CLI tool that can be used to load and unload the programs. You can choose an interface and choose whether the program will be loaded in INGRESS or EGRESS.

Example usage:

traffico --ifname=eth0 --at=INGRESS block_private_ipv4

traffico-cni

traffico-cni is a meta CNI plugin that allows the traffico programs to be used in CNI.

Meta means that traffico-cni does not create any interface for you, it is intended to be used as a chained CNI plugin.

The plugin block to use traffico-cni is very similar to how traffico is used as a CLI tool.

{
    "type": "traffico-cni",
    "program": "block_private_ipv4",
    "attachPoint": "ingress"
}

Here's an example CNI config file featuring traffico-cni.

{
    "name": "mynetwork",
    "cniVersion": "0.4.0",
    "plugins": [
        {
            "type": "ptp",
            "ipMasq": true,
            "ipam": {
                "type": "host-local",
                "subnet": "10.10.10.0/24",
                "resolvConf": "/etc/resolv.conf",
                "routes": [
                    { "dst": "0.0.0.0/0" }
                ]
            },
            "dns": {
                "nameservers": ["1.1.1.1", "1.0.0.1"]
            }
        },
        {
            "type": "firewall"
        },
        {
            "type": "traffico-cni",
            "program": "block_private_ipv4",
            "attachPoint": "ingress"
        },
        {
            "type": "tc-redirect-tap"
        }
    ]
}

Built-in programs

Program	Description
block_private_ipv4	Blocks private IPv4 addresses subnets allowing only SSH access on port 22
block_ip	Drops packets with destination equal to the input IPv4 address
block_port	Drops packets with the destination port equal to the input port number
nop	A simple program that does nothing

Build

To compile traffico from source you either provide your vmlinux.h in the vmlinux/ directory (default option) or you configure the project to generate one from your current Linux kernel:

xmake f --generate-vmlinux=y

Now you will be able to build traffico from source by running:

xmake

In case you only want to compile the BPF programs you can do this:

xmake -b bpf

Test

To run the test suite you can do this:

xmake -b test
xmake run test