> Source: [sk179028](https://support.checkpoint.com/results/sk/sk179028)

# sk179028 - Connectivity issues in Maestro Security Group X with hosts in the network of 198.51.10x.0 / 24

| Property | Value |
|----------|-------|
| Solution ID | sk179028 |
| Date Created | 2022-05-09 |
| Last Modified | 2025-10-12 |
| Technical Level | Advanced |
| Products | Scalable Platforms |
| Versions | R82.10, R82, R81.20, R81.10 (EOS) |
| OS | Gaia |

## Symptoms

- * In Security Group X (example: Security Group 1), it is not possible to configure an interface with an IP in the network of 198.51.10x.0 / 24.

* In Security Group X (example: Security Group 1), there are connectivity issues with hosts in the network of 198.51.10x.0 / 24.

## Cause

In versions lower than R80.20SP Jumbo Hotfix Accumulator Take 327, the start of CIN interfaces for IP ranges is hardcoded to be 198.51.10x.0 / 24, where \<x\> is the Security Group ID.

Examples: 198.51.101.X, 198.51.102.X, 198.51.103.X, and so on.

<br />

## Solution

This solution requires authentication. Please log in to view the full solution.

---

# Agent Instructions

This content is from the Check Point Support Center (https://support.checkpoint.com), the official knowledge base for Check Point cybersecurity products.

## Navigating This Knowledge Base

- **Complete index**: [llms.txt](https://support.checkpoint.com/llms.txt)
- **All SK articles**: [SecureKnowledge Sitemap](https://support.checkpoint.com/sitemaps/secureknowledge-sitemap-index.xml)
- **SK article URL pattern**: `https://support.checkpoint.com/results/sk/{skId}`
- **Markdown responses**: AI bot User-Agents automatically receive `text/markdown` content