ipquery
This project contains two binaries. One is a picoservice to tell you what your IP address is. The other is a utility to update your Network ACL on AWS.
This is useful if you do not have a fixed IP address and you periodically need to update your network ACL to reflect your current IP address.
Installing
You can install the update-acl utility by issuing the following command:
go get -u github.com/borud/ipquery/cmd/update-acl
update-acl
Update ACL figures out what your externally visible IP address is by
calling the ipquery picoservice. By default the update-acl
program uses my personal service, but if you are going to use this I
would strongly suggest you set up your own since I can't guarantee
the stability of this service.
You can view the command line options by running update-acl -h:
$ bin/update-acl -h
Usage:
update-acl [OPTIONS]
Application Options:
-s, --whatismyip-url= WhatIsMyIP service URL (default: https://h.borud.no/whatismyip)
-a, --network-acl-id= Network ACL ID
-p, --port= Port number (default: 22)
-t, --protocol-type= 6 is TCP, 17 is UDP (default: 6)
-n, --rule-number= ACL rule number
-r, --aws-region= AWS region (default: eu-north-1)
-d, --dry-run Dry run only
Help Options:
-h, --help Show this help message
Using scripts
One way to make updating ACLs a bit more convenient is to create shellscripts that contain the configurations for your different environments. Here is an example:
#!/bin/sh
#
#
WHATISMYIP_URL=<your whatismyip service URL>
NETWORK_ACL_ID=<your network acl id>
AWS_REGION=<your region>
PORT=<your port>
RULE_ID=<your rule id>
update-acl \
-s $WHATISMYIP_URL \
-a $NETWORK_ACL_ID \
-r $AWS_REGION \
-p $PORT \
-n $RULE_ID
Credentials
Since we use the AWS Go SDK you have to set up your credentials so please have a look at this page on how to get this done: https://docs.aws.amazon.com/sdk-for-go/v1/developer-guide/configuring-sdk.html