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Learning RHEL Networking

You're reading from   Learning RHEL Networking Gain Linux administration skills by learning new networking concepts in Red Hat Enterprise Linux 7

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Product type Paperback
Published in Jun 2015
Publisher
ISBN-13 9781785287831
Length 216 pages
Edition 1st Edition
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Toc

Table of Contents (13) Chapters Close

Preface 1. Introducing Enterprise Linux 7 FREE CHAPTER 2. Configuring Network Settings 3. Configuring Key Network Services 4. Implementing iSCSI SANs 5. Implementing btrfs 6. File Sharing with NFS 7. Implementing Windows Shares with Samba 4 8. Integrating RHEL 7 into Microsoft Active Directory Domains 9. Deploying the Apache HTTPD Server 10. Securing the System with SELinux 11. Network Security with firewalld Index

Summary

The firewalld project is maintained by Fedora and is the new administrative service and interface for the netfilter firewall on the Linux Kernel. As administrators, we can choose to use this default service or switch back to iptables; however, firewalld is able to provide us with the ability to reload configuration without dropping connections and mechanisms to migrate from iptables. We have seen how we can use zones to segregate network interfaces and sources if we need to share address ranges on a single NIC. Neither the NIC nor the source is bound to the zone. We can then add rules to a zone to control access to our resources. These rules are based on services or ports. If more complexity is required, we have the option of using rich or direct rules. Rich rules are written in the rich language from firewalld, whereas direct rules are written in the iptables syntax.

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