Log in to Your Red Hat Account

Your Red Hat account gives you access to your profile, preferences, and services, depending on your status.

If you are a new customer, register now for access to product evaluations and purchasing capabilities.

Need access to an account?

If your company has an existing Red Hat account, your organization administrator can grant you access.

If you have any questions, please contact customer service.

Red Hat Account Number:

Red Hat Account

Customer Portal

For your security, if you’re on a public computer and have finished using your Red Hat services, please be sure to log out.

Select Your Language

How can I tell what process is sending a UDP message to a specific IP address

Solution Verified - Updated 2016-10-12T01:56:35+00:00 -

Issue

How can I tell what process is sending a UDP message to a specific IP address?
DNS server is being decommissioned but is still receiving queries. We need to know what processes are sending the messages so they can be restarted without having to restart all our applications or reboot the system
We see a large flood of DNS queries leaving this system. How to tell which process is sending DNS queries?

Environment

Red Hat Enterprise Linux 7
Red Hat Enterprise Linux 6
IPv4 networking
UDP

Subscriber exclusive content

A Red Hat subscription provides unlimited access to our knowledgebase of over 48,000 articles and solutions.

Current Customers and Partners

Log in for full access

Log In

New to Red Hat?

Learn more about Red Hat subscriptions

Welcome! Check out the Getting Started with Red Hat page for quick tours and guides for common tasks.

Here are the common uses of Markdown.

Code blocks

~~~
Code surrounded in tildes is easier to read
~~~

Links/URLs

[Red Hat Customer Portal](https://access.redhat.com)