Why does SSH or FTP take a long time to connect or login into the server?

Solution Verified - Updated -

Issue

  • When someone connects to Red Hat Enterprise Linux server via ssh or ftp, there is long delay after entering the password before the prompt returns.
  • Putty connection is very slow.
  • How do I disable SSH's UseDNS function?

Environment

  • Red Hat Enterprise Linux 5
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 8
  • sshd
  • vsftpd

Subscriber exclusive content

A Red Hat subscription provides unlimited access to our knowledgebase, tools, and much more.

Current Customers and Partners

Log in for full access

Log In

New to Red Hat?

Learn more about Red Hat subscriptions

Using a Red Hat product through a public cloud?

How to access this content