process: IP Whitelisting (#175)

* IP Whitelisting

* Apply suggestions from code review

Co-authored-by: Wayne Collier <wayne.collier@digitalasset.com>
Signed-off-by: Amanda L Martin <hythloda@gmail.com>

* merge whitelisting docs

* Update IP-whitelisting.md

Signed-off-by: Amanda L Martin <hythloda@gmail.com>

* merge conflict fix and merging docs

---------

Signed-off-by: Amanda L Martin <hythloda@gmail.com>
Co-authored-by: Wayne Collier <wayne.collier@digitalasset.com>

Author: hythloda

Super Validator Operational Processes/new-whitelisted-ip.md

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+## How to Ask for a New Whitelisted IP Process
+
+### Purpose
+
+This process defines how to request the addition of a new IP address to the `<network>/allowed-ip-ranges.json` in file  [configs-private](https://github.com/global-synchronizer-foundation/configs-private), which is used to whitelist IPs for access to Canton network nodes, tools, or monitoring interfaces.
+
+### Status
+
+This is a proposed process based on working patterns as no formal process has been documented yet.
+
+### Process
+
+### 1. Sponsorship and Accountability
+
+#### 1a. Sponsor Involvement for Self-Hosted Validators
+
+- For validators operating their **own infrastructure**, an **SV sponsor is required** for all IP whitelisting requests.
+- The SV sponsor should normally be the **onboarding SV**, but another SV may act as sponsor if they explicitly agree to take responsibility.
+- The SV sponsor must be **explicitly recorded** in the IP whitelisting entry.
+- The SV sponsor is accountable for the validator node or cluster they sponsor.
+
+#### 1b. Operator Involvement for Node-as-a-Service Operated Nodes
+
+- For validators operated by a **Node as a Service (NaaS) provider**, the **NaaS provider is the responsible operator** for the validator node or cluster.
+- The **Node as a Service provider must be explicitly recorded** in all IP whitelisting requests and in the whitelisting record.
+- The NaaS provider is accountable for day-to-day infrastructure operation, security posture, and compliance with network-level requirements.
+- Any exceptions to this structure must be **explicitly documented** in the IP whitelisting record or PR description.
+
+#### 2. IP Address Allocation Rules
+
+- As a general rule, **one IP address should be whitelisted per validator node or cluster**.
+- Exceptions (for example, large institutions, exchanges, or temporary node migrations) may be considered on a case-by-case basis and must be clearly explained in the PR description.
+- Validator nodes and clusters **must use different IP addresses for different networks** (for example, DevNet, TestNet, and MainNet).
+- Operators must ensure that validator infrastructure uses a single egress gateway so that outbound traffic originates from the approved IP.
+
+#### 3. Prepare the Change and Submit a Pull Request
+
+Submit a pull request (PR) to the GitHub repository: [global-synchronizer-foundation/configs-private](https://github.com/global-synchronizer-foundation/configs-private). If you are not a maintainer, create it via a GitHub fork.
+
+When preparing the PR, consider the following:
+  - Make changes in the file `configs/<network>/allowed-ip-ranges.json` where `<network>` is the network you wish to add the IP for (DevNet, TestNet or MainNet)
+  - Identify the correct section for the IP entry:
+    - `svs`
+    - `validators`
+    - `vpns`
+    - `read-only clients`
+- Entries under `validators` or `read-only clients` must include (Separate the two using `" / "`):
+  - The name of the validator or organization requesting access, and
+  - The name of the operator running the node on their behalf   
+- If the validator operates its own node, include the **SV sponsor** instead.
+- As a general rule, only one IP should be whitelisted per validator. Make sure that validators nodes use a single egress gateway so that they have a single egress IP. If more than one IP is required per validator, e.g. to temporarily run a second node while migrating between nodes, please explain that in the PR description.
+
+- Ensure that:
+  - All entries are **sorted alphabetically**, and IP addresses for each entry are **sorted numerically**.  
+  - CI checks will fail if sorting requirements are not met
+
+#### 5. Additional Requirements for TestNet and MainNet
+
+If adding an IP for a validator on **TestNet** or **MainNet**, the PR description must include **one of the following**:
+
+- A link to an announcement confirming that the validator has been approved by the Tokenomics Committee, or
+- A link naming the approved operator (from the list of operators authorized by the Tech and Ops Committee) under whose discretion the validator is being onboarded.
+
+#### 6. Get the PR reviewed and merged
+
+- The PR must be reviewed and approved by a maintainer from a **different organization** than the submitter.
+- If the submitter is a maintainer, the PR may be merged only after approval from another maintainer from a different organization.
+
+#### 7. Tooling
+
+- The script [new-whitelist.sh](https://github.com/global-synchronizer-foundation/configs-private/blob/main/scripts/new-whitelist.sh) may be used to automate most of the steps above, including PR creation.
+- Use of the script does not remove the requirement for proper documentation, justification, and review.
+
+### Notes
+
+- Sponsors remain responsible for the nodes and clusters they sponsor after whitelisting.
+- Exceptions to IP allocation or sponsorship rules must be explicitly documented.
+- Operators must ensure IP allocations comply with all network-level requirements before deployment.
+- SV operators are encouraged to document and share evolving best practices during PR review.