Satellite 5 OSAD clients appear offline and causing 'kernel: possible SYN flooding on port 5222'

Solution Verified - Updated -

Issue

  • Large OSAD clients check in causes SYN Flooding on the default inbound port of 5222.
Aug 12 16:50:52 <server> kernel: possible SYN flooding on port 5222. Sending cookies.
Aug 12 16:52:07<server>kernel: possible SYN flooding on port 5222. Sending cookies.
Aug 12 16:53:15 <server>kernel: possible SYN flooding on port 5222. Sending cookies.
<snip>
 less var/log/messages |grep -i flooding |wc -l
148

Environment

  • Red Hat Satellite 5.X

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