0

Use the Linux kernel Netfilter Subsystem Firewall-Zentyal Firewall Module

Zentyal firewall makes use of Linux Firewall kernel subsystem referred to as Netfilter. Its functionalities include package marking, filtering, connection redirection capabilities, and many others. Zentyal firewal security model is actually based on offering maximum amount of security even with default configuration thereby trying to minimize efforts when new service is added.

When users configure this tool to work as firewall, it normally gets installed between router connected to internet and internal network. Network interface connecting host with router will be market as the External that is Network-> interfaces and hence firewall will be capable of establishing potent policies for all connections that will be initiated outside the network of yours. By default, the external interface policy is denying any connection that is new. On the contrary, for the internal interfaces, this tool will deny all connections that attempt except those that get targeted to the services already defined by installed modules. Modules will be adding rules for firewall for allowing the connections. Users can modify the rules at a later stage by entering system administrator portal. Default configuration for the connections for hosting outside network as well as connections from server is allowed to all.

In this Netfilter subsystem, there are sections that are responsible for controlling varying traffic flows based on their destination and source. The first is filtering rules that allow access only to file server of Zentyal from local network. The other section will restrict access to the internet from collection of hosts thereby forbidding DMZ from accessing other segments of LAN. There is also a rule that allows any hosts available on the internet from accessing webpage that is provided by Zentyal. The next rule is for proxy connections that will be done on behalf of single user by the software vendor. In all, this tool is simple to operate as it comes with help guide containing step-by-step instructions.

Use the Linux kernel Netfilter subsystem firewall-Zentyal firewall module

Filed in: Script Tags: , ,

Free Host-Based Linux Firewall- Uncomplicated Firewall
Free Host-Based Linux Firewall- Uncomplicated Firewall

Keeping Track of All Your Contacts/Addresses/Phonenumbers with RGS-CardMaster
Keeping Track of All Your Contacts/Addresses/Phonenumbers with RGS-CardMaster

Plan Daily Activities with MSD Organizer Freeware
Plan Daily Activities with MSD Organizer Freeware

Advanced Desktop Address Book Program – Open Contacts
Advanced Desktop Address Book Program – Open Contacts

Free Personal Information Manager – ContactKeeper
Free Personal Information Manager – ContactKeeper

Build Your Contact Lists with 100% Free Address Book
Build Your Contact Lists with 100% Free Address Book

Leave a Reply

Submit Comment

© 2017 Software for Sharing. All rights reserved. XHTML / CSS Valid.