projectcalico/calico

Support for explicit REJECT action in policy rules

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#4,500 opened on Mar 31, 2021

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Description

Hi,

Quick question, I don't see a way to set the policy for the rules from DROP to REJECT (silently drop vs quick RST), is this accurate? If so, any reason why this isn't configurable and would it be acceptable PR?

Thanks.

Contributor guide

Research direction
Examine how Calico implements DROP action in policy rules, and then add support for REJECT action which sends TCP RST or ICMP unreachable packets. Look at the iptables or eBPF dataplane code to understand where to add the new action.
Tech stack
go
Domain
backendnetworking
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.
Half day
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.
Clear
Prerequisites
Goiptables
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
65