Redshift-beveiliging

Introductie tot Redshift

Jason Myers

Principal Engineer

Redshift-beveiliging

Toegangsbeheer op kolomniveau
Row-level security via policies
Datamasking via policies

Redshift-beveiligingsportfolio

Rechten op kolomniveau

Verbergt een kolom volledig
Verifiëren via SVV_COLUMN_PRIVILEGES

SELECT *
  FROM SVV_COLUMN_PRIVILEGES
 WHERE relation_name = 'products';

relation_name | column_name  | privilege_type | identity_name | identity_type
==============|==============|================|===============|==============
products      | product_name | SELECT         | amelia        | user
products      | product_name | SELECT         | analytics     | role

Row-level security

Policies die data vooraf filteren

CREATE RLS POLICY policy_books
WITH (category VARCHAR(255))
USING (category = 'Dark Academia');

SELECT product_line, category, product_name
FROM products;

product_line | category      | product_name
=============|===============|===================
Books        | Dark Academia | A Deadly Education

Row-level security

SVV_RLS_POLICY om policies te bekijken

SELECT polname AS policy_name, 
       polatts AS column_details,
       polqual AS condition
  FROM SVV_RLS_POLICY;

policy_name  | column_details                                 | condition
 ============|================================================|===========================
policy_books | [{"colname":"category","type":"VARCHAR(255)"}] | category = 'Dark Academia'

Admin-weergave voor row-level security

SVV_RLS_APPLIED_POLICY kan door superusers worden gebruikt om getroffen queries te zien

SELECT username, 
       command, 
       relschema, 
       relname, 
       polname,
FROM SVV_RLS_APPLIED_POLICY;

username | command | relschema | relname  | polname  
=========|=========|===========|==========|=============
aashvi   |    s    | public    | products | policy_books

Overzicht van Dynamic Masking

Policy die waarden uit een query maskeert
Alleen een superuser of iemand met rechten kan ze zien
Toepassingen
- Nationale ID-nummers (bijv. burgerservicenummer)
- Creditcards

SELECT name, social_security_number
  FROM customers;

name     | social_security_number
======== | =======================
John Doe | XXX-XX-1234
Jane Doe | XXX-XX-5678

Laten we oefenen!

Introductie tot Redshift