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@puresec/function-shield
Advanced tools
Readme
Serverless Security Library for Developers. Regain Control over Your Serverless Runtime.
Supports AWS Lambda and Google Cloud Functions
Please visit: https://www.puresec.io/function-shield-token-form
$ npm install @puresec/function-shield
const FunctionShield = require("@puresec/function-shield");
FunctionShield.configure({
policy: {
// "block" mode => active blocking
// "alert" mode => log only
// "allow" mode => allowed, implicitly occurs if key does not exist
outbound_connectivity: "block",
read_write_tmp: "block",
create_child_process: "block",
read_handler: "block" },
token: process.env.FUNCTION_SHIELD_TOKEN });
exports.hello = async (event) => {
// ... // your code
};
FunctionShield logs are sent directly to your function's AWS CloudWatch log group. Here are a few sample logs, demonstrating the log format you should expect:
// Log example #1:
{
"details": {
"host": "microsoft.com",
"ip": "13.77.161.179"
},
"function_shield": true,
"timestamp": "2019-06-19T09:08:00.455144Z",
"policy": "outbound_connectivity",
"mode": "block"
}
// Log example #2:
{
"details": {
"path": "/tmp/block"
},
"function_shield": true,
"timestamp": "2019-06-19T09:08:00.422553Z",
"policy": "read_write_tmp",
"mode": "block"
}
// Log example #3:
{
"details": {
"arguments": [
"uname",
"-a"
],
"path": "/bin/uname"
},
"function_shield": true,
"timestamp": "2019-06-19T09:08:00.469822Z",
"policy": "create_child_process",
"mode": "block"
}
// Log example #4:
{
"details": {
"path": "/var/task/handler.js"
},
"function_shield": true,
"timestamp": "2019-06-19T09:08:00.433942Z",
"policy": "read_handler",
"mode": "block"
}
FunctionShield.configure
can be called multiple time to temporary disable one of the policies.
Note that you need to add an additional parameter cookie
to any subsequent call to FunctionShield.configure
.
const FunctionShield = require("@puresec/function-shield");
const got = require("got");
const cookie = FunctionShield.configure({
policy: {
outbound_connectivity: "block",
read_write_tmp: "block",
create_child_process: "block",
read_handler: "block"
},
token: process.env.FUNCTION_SHIELD_TOKEN
});
exports.hello = async (event) => {
...
FunctionShield.configure({
cookie: cookie,
policy: {
outbound_connectivity: "allow"
}
});
const response = await got("https://api.company.com/users");
FunctionShield.configure({
cookie: cookie,
policy: {
outbound_connectivity: "block"
}
});
...
};
Custom security policy is only supported with the PureSec SSP full product.
FAQs
Regain security control over your serverless runtime
The npm package @puresec/function-shield receives a total of 140 weekly downloads. As such, @puresec/function-shield popularity was classified as not popular.
We found that @puresec/function-shield demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 2 open source maintainers collaborating on the project.
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