This is a network distributed intrusion prevention system controlled via HTTP API. When bad guys tries to knock your servers or routers, their IP can be immediately sent to your network as hotroutes to null for specified amount of time - for all your network.
At first you will need at least a BGP RR to connect ban2bgp with :-). And some PC with Linux/FreeBSD (although Windows or Mac will work too, I hope) to run ban2bgp.
At second you should configure your router to accept bgp connections from your PC.
For example, router you have has IP 10.0.0.1, AS 65535. PC with ban2bgp has IP 10.1.1.1.
In Cisco dialect it will be something like:
$ cargo run After this you can check on your router that BGP session with 10.1.1.1 is established.
Add denyroute for host 10.2.2.2 for an hour:
/usr/bin/curl http://127.0.0.1:8080/api/add?net=10.2.2.2&dur=3600 In ther contrib folder you can find an example configuration for fail2ban.
when you specify in the jain config
banaction=ban2bgp
instead of
banaction=iptables... Bad hosts will be banned not for just single server, but for your whole network.
Also you can easily integrate ban2bgp on your syslog server for all your routers. ban2bgp looks for configuration in file ban2bgp.ini in current directory.
This file have on [main] section
Main section parameters:
* httplisten - bind address and port for inner http server, default 0.0.0.0:8080.
* listen - not necessary BGP listen point, default 0.0.0.0:179, wich required root privileges because 179<1024.
* nexthop - ipv4 nexthop for denied routes. All your routers should have this routed to Null.
* nexthop6 - ipv6 nexthop for denied routes.
* communities - spaced-separated communites list for denied routes.
* peers - comma-separated list for BGP peers. Each peer has form [ip] AS /api/add
Parameters: /api/remove
Parameters: /api/json
Block operation. Requires a valid JSON Object in POST body with optional keys "add" and "remove".
remove - an array of string routes to be removed, add - an object with "duration" and "nets". "nets" - an array of string routes to be added for "duration" seconds.
Example:
{"add":{"duration":86400,"nets":["33.3.3.3"]},"remove":["11.1.1.1","22.2.2.2"]} /api/ping
Checks service liveness. Returns "pong" /api/dumprib
Returns text table with active routes and times https://crates.io/crates/ban2bgp https://docs.rs/ban2bgp
! Set nexthop for denied routes to null
ip route 198.18.0.1 255.255.255.255 Null0
! Set up the BGP
router bgp 65535
! create a neighbor with your own AS, so it will be IBGP
neighbor 10.1.1.1 remote-as 65535
! specify source IP
neighbor 10.1.1.1 update-source Loopback0
! do not attempt to connect from router to PC, only from PC to router
neighbor 10.1.1.1 transport connection-mode passive
address-family ipv4
! it has ipv4 unicast address family
neighbor 10.1.1.1 activate
! send all routing information to PC
neighbor 10.1.1.1 route-reflector-client
Now on PC with Linux or FreeBSD:
$ git clone https://github.com/wladwm/ban2bgp
... git messages
$ cd ban2bgp
$ cargo build
... cargo messages
$ cat > ban2bgp.ini <Configuration
API endpoints
Crates.io
Documentation
License