Beeline is a tool for creating network routing tables that exclude the subnets that are specified in the command line.
Creating routing tables is generally a simple process but not necessarily an easy one. When I once had the need to create a routing table that would route all packets except those from some subnets I found that there was not much documentation/tooling to do such thing. And this is how this tool was born.
Below an example output where the created routing table has all the routes that allow all traffic except the subnet 10.0.0.0/8.
┌─────────────┬─────────────┬─────────────────┐
│ CIDR │ Low Address │ High Address │
├─────────────┼─────────────┼─────────────────┤
│ 0.0.0.0/5 │ 0.0.0.0 │ 7.255.255.255 │
├─────────────┼─────────────┼─────────────────┤
│ 8.0.0.0/7 │ 8.0.0.0 │ 9.255.255.255 │
├─────────────┴─────────────┴─────────────────┤
│ 10.0.0.0 -> 10.255.255.255 │
├─────────────┬─────────────┬─────────────────┤
│ 11.0.0.0/8 │ 11.0.0.0 │ 11.255.255.255 │
├─────────────┼─────────────┼─────────────────┤
│ 12.0.0.0/6 │ 12.0.0.0 │ 15.255.255.255 │
├─────────────┼─────────────┼─────────────────┤
│ 16.0.0.0/4 │ 16.0.0.0 │ 31.255.255.255 │
├─────────────┼─────────────┼─────────────────┤
│ 32.0.0.0/3 │ 32.0.0.0 │ 63.255.255.255 │
├─────────────┼─────────────┼─────────────────┤
│ 64.0.0.0/2 │ 64.0.0.0 │ 127.255.255.255 │
├─────────────┼─────────────┼─────────────────┤
│ 128.0.0.0/1 │ 128.0.0.0 │ 255.255.255.255 │
└─────────────┴─────────────┴─────────────────┘$ ./beeline -h
Usage: beeline [OPTIONS]
This script, given a list of subnets, finds all network routes that excludes
given subnets.
The subnets will be passed in CIDR format, ie. 10.0.0.0/8, in a
comma-separated list.
Example: $ ./beeline -c 10.0.0.0/8,192.168.0.0/16
Options:
-c, --cidr TEXT Comma-separated CIDR list,
eg. 10.0.0.0/12,192.168.0.0/16
-f, --format TEXT Custom format template. You
can use %cidr, %prefix, %lowAddr and %highAddr to insert
the CIDR address, CIDR prefix, the low and high addresses
of the range respectively.
Example: ./beeline -c 10.0.0.0/8,192.168.0.0/16 -f "%cidr/%prefix - %lowAddr - %highAddr"
--show-gaps Show gaps in table
-h, --help Show this message and exitMac OS
$ brew install aitorvs/repo/beeline
Other
Download standalone JAR from
latest release.
On MacOS and Linux you can chmod +x and execute the .jar directly.
On Windows use java -jar.
Copyright 2021 Aitor Viana
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.