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Get to know us better! Gain valuable insights into how we think by visiting our blog, or take a look at the industry events we're frequenting on our events page. You can also geek out with us by attending one of our security management webinars, or dive head first into the products and solutions we provide in our Resource Library. There's lots to keep you busy! 

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Blog

Jul 31, 2017 What is a multi-cloud environment and how do I secure it?
You may have heard the phrase multi-cloud environment and wondered what it was, do you have it and maybe even thought: whoa, that sounds like a security nightmare.
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Jul 25, 2017 Threat Hunting? Ditch the SIEM - Part 2

To date, SIEM vendors have not provided the market with the functions needed for producing world-class threat hunting. Again, threat hunting is a method. In order to follow this method, we have to have tools that accelerate and amplify our human work, rather than using technologies that brush aside our method in favor of operating within their paradigm. Too many threat hunting programs are sputtering because we continue to believe that the method should conform to the technology, but that gets things backwards.

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Feb 07, 2014

How to Prevent IP Address Spoofing

Prevent IP Address Spoofing

“Things are not always what they seem; the first appearance deceives many”. Phaedrus.

IP Address Spoofing is sometimes referred to as IP Address Forgery, and as the name suggests it’s a technique commonly used by hackers to perform malicious activities, such as Man in the Middle (MiTM), Denial of Service (DoS) and Dedicated Denial of Service (DDoS) attacks. It is generally used to maintain anonymity and cause havoc on the Internet.

To first understand what IP Address Spoofing is; and how it is used, we need to have an appreciation of the underlying protocol(s) that open the door for manipulation. Which essentially is IP, TCP and UDP and the ability to manipulate the packet header information (source address field).

Current State and Attacks

In an age of Botnets where an attacker has a layer of abstraction behind a command and control server, some people think that IP Address Spoofing is no longer an issue. When in fact the reality is the opposite, IP Address Spoofing remains a real problem to defend against. In some cases, IP Address Spoofing is necessary for an attacks success, where it provides an additional layer of anonymity and protection for a botnet (see DNS DDoS Amplification Attack).

So, due to the inherent ability to manipulate a packets header in the protocol stack is where the ability to perform malicious attacks such as:

MiTM – Where a malicious user intercepts a legitimate communication between two parties. The injected, malicious host then controls the transmission flow and can eliminate or alter the information within the data stream without the knowledge of the original sender or recipient. In this scenario, the attacker fools the victim into disclosing confidential information by “spoofing” the original sender’s address / identity.

DoS / DDoS – Since some malicious users are only concerned with consuming resources and bandwidth, they attempt to “flood” the victim network with large volumes of traffic to consume system resources. In order to maintain the effectiveness of the attack, the attacker will “spoof” the source IP addresses to make stopping and tracing of the attack as difficult as possible. This is amplified when multiple compromised hosts all have “spoofed” addresses and are participating in the attack.

Defense Mechanisms

What can you do to defend against IP Address Spoofing attacks?

Firstly, ensure that your firewall and routers are configured correctly and restrict the advance of forged traffic from the internet. For many years now firewall vendors have included a configurable anti-spoofing defence mechanism to block the use of private (RFC 1918) addresses on the external interface. In addition, the external (internet facing) interface should not accept any addresses that are used in the internal network range as the source. You should also prevent source addresses from outside of your valid public network range, which will prevent any of your neighbour’s from sending spoofed traffic to the Internet.

As an example, if the attacker sits within the 203.42.5.0/24 network range that is provided Internet connectivity by ISP D. An input traffic filter on the ingress link of router 2 (which provides internet connectivity to the attacker’s network) restricts traffic to allow only traffic that originates from the source addresses within the 203.42.5.0/24 network prefix and prohibits the attacker from using any “invalid” source addresses that reside out of the prefixed range.

A second preventative mechanism is to implement authentication and encryption to reduce the likelihood of threat. IPv6 implements both of these features.
ISP-Router-Example
How can FireMon Help?

IP Address Spoofing is a difficult problem since its inherent weakness is due to the design of the protocol suite. However, understanding how and why one would use a spoofing attack can greatly increase your chances of successfully defending an attack. Using Security Manager, FireMon provide the ability to perform a regular assessment of your firewall and its configuration against best of breed configuration practices. Security Manager includes a number of pre-built compliance reports that will save your security administrators valuable time and effort and assist your organisation to quickly find misconfigurations, the implementation of risky services and unused rules that could expose your network to attack.

A quick glance at the Firewall Configuration Best Practices report can provide your security managers with the detailed information needed to appropriately manage your organisations security on a regular basis.

Dashboard

Each configuration check that Security Manager is able to perform can be drilled into by clicking the item to show more detail.

Configuration

Don’t be fooled by a masquerading IP; contact a Firemon representative today for a demonstration of Security Manager and how we can help your organisation and prevent your systems from being spoofed.

Events

Webinars

Jul 27, 2017 Bridge the Gap Between Your Risk & Network Teams to Reduce Risk
Recent cyberattacks such as Wannacry and Petya magnify the need to make risk and vulnerability management a top priority for organizations.  Combine that with a network security posture that is too open from years of access changes and little policy cleanup, organizations are more at risk now than at any time in history. 
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Jun 29, 2017 The Hybrid Cloud Reality: Managing Security in Private, Public & On-Premises Environments
In a recent study, 90% of IT security practitioners reported that their organization has adopted or plans to adopt a cloud solution. Cloud is now.
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Jun 22, 2017 La vida del firewall: administración constante y automatizada del ciclo de vida de las políticas

El nuevo paradigma de la automatización es la “Administración del Ciclo de Vida”

 

Te mostraremos cómo FireMon Intelligent Policy Automation utiliza la tecnología de automatización e inteligencia para reducir el esfuerzo e incrementar la eficacia en cada etapa del proceso de cambios.
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Jun 06, 2017 Top 5 Risks of "Dirty" Firewalls
Firewall rules are notoriously complex and voluminous in nature. Even small organizations have multiple firewalls and significant complexity. But large organizations are overwhelmed.
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News

Jun 07, 2017
Qakbot malware from 2009 returns, causes Active Directory lockouts
SC Magazine UK
Jun 06, 2017
Botched security: Celebrities, other patients, affected after plastic surgery files are breached and stolen
SC Magazine
Jun 06, 2017
Election cyberattack proves people are still the biggest flaw
SearchSecurity
Jun 01, 2017
250K Photos Leaked in Cosmetic Surgery Extortion Attack
Info Security
Jun 01, 2017
OneLogin Breach Reignites Concerns over Password Managers
Dark Reading
Jun 01, 2017
OneLogin Breach Reignites Concerns over Password Managers
Dark Reading
May 29, 2017
How to manage the Complexity Gap
IT Pro Portal
May 26, 2017
Hackers upgrading malware to 64-bit code to evade detection
SC Magazine UK
May 25, 2017
83 percent of security staff waste time fixing other IT problems
Betanews
May 24, 2017
Unsanctioned Computer Support Costs Companies $88K per Year
Dark Reading
May 23, 2017
WannaCry Successor Is New ‘Doomsday’ SMB Worm That Uses 7 NSA Hacking Tools
Information Security Buzz
May 23, 2017
WannaCry? Not really. A report from the 11th Eskenzi PR IT Analyst and CISO Forum
Computer Weekly
May 18, 2017
Cisco Warns Of Un-Patchable WannaCrypt Vulnerabilities
Information Security Buzz
May 16, 2017
Here comes the cloud...and it's all right
SC Magazine
May 15, 2017
10 ways cyber security will evolve in the face of growing threats
Information Age
May 12, 2017
Managing Complexity Is No. 1 Security Challenge in FireMon’s Annual State of the Firewall Report
Computing Security
May 12, 2017
Sabre Breach
Information Security Buzz
May 12, 2017
FireMon Announces Industry’s First Intelligent Cloud Security Management Solution
IT Security Guru
May 12, 2017
FireMon Releases Third Annual State of the Firewall Report
Dark Reading
May 12, 2017
WikiLeaks drops 'Grasshopper' documents, part four of its CIA Vault 7 files
Wired
  See all news from 2017



Resource Library

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Policy Change

White Papers

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Analyst Reports

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Security Manager
Overview of FireMon’s Flagship Firewall Management Solution
Policy Planner
Overview of FireMon’s Change Automation Solution
Policy Optimizer
Overview of FireMon’s Rule Recertification Automation Solution
Risk Analyzer
Overview of FireMon’s Attack Simulation and Risk Measurement Solution
Immediate Insight
Overview of FireMon’s Immediate Insight Solution
Intelligent Security Management
Delivering next-generation security management that boosts productivity and accelerates the agility of business
Intelligent Policy Automation
Intelligent Policy Automation: Orchestrating Change Management with Speed and Security.
Hybrid Cloud Management
Visibility into and control over Cloud Services, including AWS and OpenStack Platforms
Accelerated Incident Response
Immediate Insight in action - Orchestration, automation and analytics for data assembly and discovery
Change Simulation & Risk Scoring
Proactively reduce risk based upon network exposure and host accessibility
Check Point Solution Brief
FireMon solutions and Check Point
Cisco Solution Brief

FireMon’s Intelligent Security Management platform enables users with Cisco Systems switches, routers and firewalls (Pix, ASA, FirePower) to work smarter, applying intelligence to the entire security program

Fortinet Solution Brief
FireMon solutions for Fortinet
Juniper Solution Brief
FireMon solutions for Juniper
NSX Solution Brief
FireMon solutions for NSX
Palo Alto Solution Brief
FireMon Solutions for Palo Alto
2017 State of the Firewall
Networking continues to evolve, yet the firewall remains critical to securing today’s enterprises. FireMon is proud to present its 3rd Annual State of the Firewall Report
Firewall Cleanup Recommendations
The implications of firewall policy complexity, why it remains a problem today and how to resolve it.
Risk Solved: Automated, Real-Time Risk Analysis & Remediation
Risk analysis with real-time change configuration is key to managing security risks in your IT infrastructure.
Real-Time Data Triage
Our Immediate Insight platform from FireMon can help organizations overcome the limitations and gaps inherent to the current analytic market.
Bridging the SIEM Alert Triage Gap
Immediate Insight enables security teams to improve event triage and incident response, extending the value of your existing full-featured SIEM.
Automation Isn't One-Size-Fits-All
Intelligent Policy Automation
Intelligent Security Management

Helping Enterprise Security Teams Improve Resource Efficiency & Reduce Overall Risk Exposure

The Top 5 Myths of Data Breaches
Five of the biggest myths that exist about data breaches, and explain how and why they occur.
Firewall Sprawl: Top Four Security Gaps Exposed

Firewall technology has come a long way since its initial, most rudimentary forms. Next-Generation Firewalls (NGFW) are the latest development, and organizations are accelerating adoption to the new technology. But NGFWs aren’t a fix-all solution.

2016 State of the Firewall
2nd Annual State of the Firewall Report based on survey of 600 IT security practitioners.
Avoid These 'Bottom Ten' Networking Worst Practices
Gartner
Overcoming the Complexity Gap
Bloor
When You Can't Patch It, Protect It from the Network
Gartner
Firewall Sprawl
Aberdeen Group
Quantifying the Value of Intelligent Security Management
Aberdeen Group
Security Analytics Brings Data-Driven Security Into the 21st Century
Forrester
Automate Zero Trust Policy and Enforcement
Forrester
The Return on Security of FireMon’s Security Manager
IANS
Large Healthcare Provider
The customer sought a data analysis tool to correlate application data with network and security data to spot service-impacting anomalies. They did not have an accurate picture of interoperability between applications and the underlying infrastructure.
Major Airline
Following a merger with another airline, this customer was left managing a large number of firewalls and routers from different security vendors using a home-grown application.
National Insurance Provider
This national insurance provider had three problems to tackle regarding their firewall policies. First, the number of rules under management was overwhelming staff and processes. They needed to increase visibility and effectiveness of their firewall change request/workflow ticketing process. And they also need help maintaining compliance PCI DSS requirements.
Managed Service Provider
Each time this Global MSP engaged a new customer, they had to onboard the firewalls – sometimes hundreds per engagement – into their network. Part of the onboarding process required assessing the policies against internal best practices – a manual, line-by-line process that took an average of 16 hours/firewall and was extremely error-prone.