Download Designing and Implementing Linux Firewalls with QoS by Lucian Gheorghe PDF

By Lucian Gheorghe

Methods to safe your method and enforce QoS utilizing real-world eventualities for networks of all sizes

* enforcing Packet filtering, NAT, bandwidth shaping, packet prioritization utilizing netfilter/iptables, iproute2, category established Queuing (CBQ) and Hierarchical Token Bucket (HTB)
* Designing and enforcing five real-world firewalls and QoS eventualities starting from small SOHO workplaces to a wide scale ISP community that spans many cities
* construction clever networks via marking, queuing, and prioritizing sorts of traffic

In Detail
Firewalls are used to guard your community from the surface international. utilizing a Linux firewall, you are able to do much more than simply filtering packets. This booklet indicates you ways to enforce Linux firewalls and caliber of provider utilizing useful examples from very small to large networks.

After giving us a historical past of community safety, the publication strikes directly to clarify the fundamental applied sciences we'll paintings with, specifically netfilter, iproute2, NAT and l7-filter. those shape the crux of creating Linux firewalls and QOS. The later a part of the e-book covers five real-world networks for which we layout the safety regulations, construct the firewall, setup the script, and make sure our install. offering simply invaluable theoretical historical past, the ebook takes a pragmatic method, proposing case experiences and lots of illustrative examples.

Approach
The writer attracts on his event to supply the reader invaluable suggestion at the most sensible practices. supplying basically important theoretical heritage, the ebook takes a pragmatic process, providing case stories and lots of illustrative examples.

Who this publication is written for?
This publication is aimed toward Linux community directors with a few figuring out of Linux protection threats and concerns, or anybody attracted to securing their platforms in the back of a firewall. uncomplicated wisdom of Linux is presumed yet except that this publication indicates you ways to do the remainder, from configuring your approach to facing safety breaches.

Show description

Read Online or Download Designing and Implementing Linux Firewalls with QoS PDF

Similar linux books

Web Penetration Testing with Kali Linux

A useful advisor to enforcing penetration trying out innovations on web pages, net purposes, and conventional net protocols with Kali Linux

Overview
• study key reconnaissance thoughts wanted as a penetration tester
• assault and take advantage of key positive aspects, authentication, and classes on net purposes
• how you can safeguard platforms, write experiences, and promote internet penetration checking out prone

In aspect

Kali Linux is equipped for pro penetration checking out and defense auditing. it's the next-generation of backpedal, the preferred open-source penetration toolkit on the planet. Readers will the way to imagine like genuine attackers, take advantage of platforms, and reveal vulnerabilities.

Even notwithstanding internet functions are built in a really safe atmosphere and feature an intrusion detection method and firewall in position to become aware of and stop any malicious job, open ports are a pre-requisite for engaging in on-line company. those ports function an open door for attackers to assault those purposes. consequently, penetration trying out turns into necessary to try out the integrity of web-applications. net Penetration trying out with Kali Linux is a hands-on advisor that may provide you with step by step equipment on discovering vulnerabilities and exploiting internet applications.

"Web Penetration trying out with Kali Linux" seems on the facets of net penetration trying out from the brain of an attacker. It presents real-world, useful step by step directions on the way to practice internet penetration checking out exercises.

You will the way to use community reconnaissance to choose your goals and assemble info. Then, you'll use server-side assaults to reveal vulnerabilities in internet servers and their functions. purchaser assaults will make the most the best way finish clients use net purposes and their workstations. additionally, you will how you can use open resource instruments to jot down studies and get find out how to promote penetration exams and glance out for universal pitfalls.

On the final touch of this e-book, you've gotten the abilities had to use Kali Linux for net penetration exams and divulge vulnerabilities on net purposes and consumers that entry them.

What you'll research from this ebook
• practice vulnerability reconnaissance to assemble info in your goals
• disclose server vulnerabilities and make the most of them to realize privileged entry
• make the most client-based structures utilizing net software protocols
• the right way to use SQL and cross-site scripting (XSS) assaults
• scouse borrow authentications via consultation hijacking suggestions
• Harden platforms so different attackers don't make the most them simply
• Generate experiences for penetration testers
• research assistance and alternate secrets and techniques from actual global penetration testers

Approach

"Web Penetration trying out with Kali Linux" comprises a variety of penetration trying out equipment utilizing back off that might be utilized by the reader. It comprises transparent step by step directions with lot of screenshots. it really is written in a simple to appreciate language for you to additional simplify the certainty for the user.

Raspberry Pi for Secret Agents (2nd Edition)

Flip your Raspberry Pi into your personal undercover agent toolbox with this set of intriguing projects
About This Book

flip your Raspberry Pi right into a multipurpose undercover agent equipment for audio/video surveillance, wireless exploration, or enjoying pranks in your associates
observe an outsider on digicam and trigger an alarm and in addition discover what the opposite desktops in your community are as much as
jam-packed with enjoyable, useful examples and easy-to-follow recipes, making certain greatest mischief for all ability levels

Who This ebook Is For

This publication is an easy-to-follow advisor with sensible examples in each one bankruptcy. appropriate for the beginner and specialist alike, each one subject presents a quick and simple method to start with fascinating functions and likewise courses you thru developing the Raspberry Pi as a undercover agent toolbox.
What you'll Learn

set up and configure the Raspbian OS for max mischief
Run your individual deepest cellphone community
observe an outsider with movement detection and trigger an alarm
Distort your voice in extraordinary methods
Push unforeseen photos into browser home windows
music the Pi's whereabouts utilizing GPS
keep watch over the Pi together with your smartphone

In Detail

The ebook begins out with the preliminary setup of your Raspberry Pi, courses you thru a few pranks and undercover agent recommendations, after which exhibits you ways to use what you've discovered out within the actual world.

Learn easy methods to configure your working procedure for max mischief and begin exploring audio, video, or wireless recommendations. you are going to methods to checklist, hear, or consult humans from a distance and the way to establish your individual telephone community. Then, plug on your webcam and organize a movement detector with an alarm or discover what the opposite desktops in your wireless community are as much as. as soon as you've mastered the suggestions, mix them with a battery pack and GPS for the final word off-road undercover agent kit.

Raspberry Pi for mystery brokers, moment version has every thing you want to flip your Raspberry Pi into an information-gathering powerhouse. Use the sensible undercover agent and pranking concepts to amuse your self or your mates.

CentOS System Administration Essentials

CentOS is generally revered as the most important and versatile Linux distribution, and it may be used as an internet server, dossier server, FTP server, area server, or a multirole answer. it really is designed to deal with the extra tough wishes of industrial functions equivalent to community and method management, database administration, and internet companies.

RHCE Red Hat Certified Engineer Linux Study Guide (Exam RH302) (Certification Press

But when you're learning for the RHCE you already knew that. .. . i'm operating my method via this e-book, and the pink Hat respectable classification advisor to prep for the examination, let alone engaged on the platforms every day. The problem is operating during the facets of the process that aren't with regards to your day after day task.

Additional info for Designing and Implementing Linux Firewalls with QoS

Example text

This will result in all the traffic passing through the attacker's computer, thus making it really easy for him or her to sniff all the network traffic from the clients. The rogue DHCP server can be set up even without performing the DHCP starvation attack, as clients accept the first DHCPOFFER they receive. Both these attacks can be easily accomplished using gobbler, a simple tool that can be found on the Internet. Unfortunately, only switches can protect users against these attacks. DHCP starvation attack can be prevented by using port security features that don't allow more than X MAC addresses on one port (the same method of prevention as for CAM attacks).

Users are assigned IP addresses by ISPs. net A local area network connected to the Internet through a router doesn't always need public IP addresses for all the devices in that network. The devices will use local IP addresses, and when going outside the network, the router can do Network Address Translation (NAT), a process that translates the local IP address of the device into one IP address that is actually routed on the Internet to that router. NAT will be explained in greater detail later in this book.

Padding: Extra zeros are added to this field to ensure that the IP header is always a multiple of 32 bits. Data is not a part of the IP header. It contains upper-layer information (TCP or UDP packets) and has a variable length of up to 64 bytes. If an IP packet needs to go out on an interface that has a MTU (Maximum Transmission Unit) size of less than the size of the IP packet, the Internet Protocol needs to fragment that packet into smaller packets matching the MTU of that interface. If the "Don't Fragment" bit in the Flags field of the IP packet is set to 1 and the packet is larger than the MTU of the interface, the packet will be dropped.

Download PDF sample

Rated 4.74 of 5 – based on 28 votes