envoyproxy/envoy

Implement/Port Outbound ACL policy module

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#10,336 opened on Mar 11, 2020

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area/connectiondesign proposalenhancementhelp wanted

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Description

Title: Implement/Port Outbound ACL policy module

Description: We need to be able to set ranges of IP addresses and ports that Envoy is allowed to connect to. For example, proxy should be able to send requests to 1.2.3.4:80 but not to 1.2.3.4:22 or 5.6.7.8:80.

Per conversation with alyssar@ this should probably be intercepted at router filter, but is there some short-term workaround that we can use?

Contributor guide

Research direction
Investigate existing Envoy filter mechanisms (e.g., RBAC, Network filters) to understand how to implement outbound ACLs. Focus on the router filter or network filter level for interception.
Tech stack
None
Domain
backendnetworkingsecurity
Issue type
Feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-2 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Mostly clear
Prerequisites
C++NetworkingEnvoy
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
40