> Source: [sk182254](https://support.checkpoint.com/results/sk/sk182254)

# sk182254 - IP Forwarding is enabled by default after installing/upgrading the Security Management Server / Multi-Domain Security Management Server

| Property | Value |
|----------|-------|
| Solution ID | sk182254 |
| Date Created | 2024-04-29 |
| Last Modified | 2024-04-30 |
| Technical Level | General |
| Products | Security Management Server |
| Versions | R81.10 (EOS), R81 (EOS) |

## Symptoms

- * IP Forwarding is enabled by default after you install or upgrade the Security Management Server / Multi-Domain Security Management Server.

* The output of the commands `cat /proc/sys/net/ipv4/ip_forward` and `sysctl net.ipv4.ip_forward` returns 1:

  `[Expert@SMS:0]# cat /proc/sys/net/ipv4/ip_forward`  
  **1**   
  `[Expert@SMS:0]# sysctl net.ipv4.ip_forward`  
  `net.ipv4.ip_forward = `**1**

## Cause

The dockerd startup arguments are missing "`set --ip-forward=false`".

## Solution

This problem was fixed. The fix is included starting from:

* [Check Point R81.20](https://support.checkpoint.com/results/sk/sk173903)
* [Jumbo Hotfix Accumulator for R81.10](https://sc1.checkpoint.com/documents/Jumbo_HFA/R81.10/Default.htm) starting from Take 61
* [Jumbo Hotfix Accumulator for R81](https://sc1.checkpoint.com/documents/Jumbo_HFA/R81/Default.htm) starting from Take 69
* [Jumbo Hotfix Accumulator for R80.40](https://sc1.checkpoint.com/documents/Jumbo_HFA/R80.40/Default.htm) starting from Take 172

Check Point recommends to always upgrade to the [Recommended version](https://support.checkpoint.com/results/sk/sk95746) ([Security Gateway](https://support.checkpoint.com/product/73) / [VSX](https://support.checkpoint.com/product/359) / [Security Management Server](https://support.checkpoint.com/product/184) / [Multi-Domain Security Management Server](https://support.checkpoint.com/product/166) / [SmartConsole](https://support.checkpoint.com/product/191)).

**Hotfix installation instructions:**   
Refer to [sk168597 - How to install a Hotfix](https://support.checkpoint.com/results/sk/sk168597).
Do this procedure If you do not wish to upgrade:  

1. Connect to the command line on the Security Management Server / Multi-Domain Security Management Server.  

2. Log in to the Expert mode.  

3. Terminate the current docker service:  
   `[Expert@SMS:0]# service docker_manager stop`  

4. Open and edit the docker-manager service configuration:  
   `vim /etc/init.d/docker_manager`  
   Change:   
   `/usr/bin/dockerd --bridge=none --iptables=False 2>/tmp/docker_out 1>/dev/null &`  
   To:  
   `/usr/bin/dockerd --bridge=none --iptables=False `**--ip-forward=false**` 2>/tmp/docker_out 1>/dev/null &`  

5. Start the docker service:  
   `service docker_manager start`

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