---
title: "Delayed or Slow SSH Connection on Mac OS X Systems Fix"
url: https://securityorb.com/delayed-slow-ssh-connection-mac-os-x-systems-fix/
type: post
date: 2015-01-05
modified: 2015-01-05
markdown_url: https://securityorb.com/delayed-slow-ssh-connection-mac-os-x-systems-fix.md
author: "Kellep Charles"
---

# Delayed or Slow SSH Connection on Mac OS X Systems Fix

When conducting a vulnerability security scan of a Mac OS X system and attempting to obtain credentialed information, it maybe required some configuration changes occur. Often the SSH connections on Mac OS X systems has long delays that will fail when the vulnerability scanner tries to log-in. To solve the problem, follow the below recommendations.

**Update Client Configuration**

sudo vi /etc/ssh_config

Replace this line:

#GSSAPIKeyExchange yes

by:

GSSAPIKeyExchange no

Be aware you must also remove the sharp symbol (#)

**Update Server Configuration**

sudo vi /etc/sshd_config

Replace this line:

#UseDNS yes

by:

UseDNS no

Again, be aware you must remove the sharp symbol (#).

An additional course of action would be to add the IP addresses you're going to connect to (or which are going to connect to your mac) in /etc/hosts.