Security Basics mailing list archives
RE: Network Segregation to prevent spread of malware
From: "Mcmillan, Arlan" <Arlan.Mcmillan () cityofchicago org>
Date: Fri, 25 Jan 2013 08:19:40 -0600
I look at IPS / IDP as bread and butter - something that nearly every security group needs to deploy as part of their defense in depth strategy. Where, not if to deploy is the question however. When deploying, below is the order of "zones" that I deploy to first. It’s just a cost-benefit thing. Given the cost of deploying IDPs, it doesn't make sense to deploy them everywhere. DMZ Internet / VPN GAN Extranet / B2B Internal critical network segments -----Original Message----- From: listbounce () securityfocus com [mailto:listbounce () securityfocus com] On Behalf Of Steve Figures Sent: Wednesday, January 23, 2013 9:42 AM To: synja () synfulvisions com Cc: Jerry Bell; listbounce () securityfocus com; tomright006 () gmail com; security-basics () securityfocus com Subject: Re: Network Segregation to prevent spread of malware You can reduce the risk of malware spreading between network segments by placing IPS interfaces between the segments. The IPS will need to be configured, tuned to suit your legitimate traffic & have an appropriate blocking policy, then monitored for alerts to be fully effective. It is a lot of work but we have successfully contained worms in this way. It does help your security posture too, so the investment in equipment & resource is worthwhile. It can protect you from more than just worms, it can mitigate against user gullibility for phishing & other vulnerabilities too. You have to assess whether your business case will support that investment, as it is not something that you can buy, install & ignore. Steve Figures On 23 Jan 2013, at 13:07, "Rob" <synja () synfulvisions com> wrote:
Additionally, the services commonly used for worm propagation (RDP/TS, RPC, etc) are also used heavily for domain operations anyway. For many environments this would be one step forward, two steps back in terms of security. Rob Sent on the Sprint® Now Network from my BlackBerry® -----Original Message----- From: Jerry Bell <jerry () riskologist com> Sender: listbounce () securityfocus com Date: Wed, 23 Jan 2013 07:07:25 To: tomright006 () gmail com<tomright006 () gmail com> Cc: security-basics () securityfocus com<security-basics () securityfocus com> Subject: Re: Network Segregation to prevent spread of malware Hi Tom, The answer is 'it depends', but probably no. If you are talking about a classic company network and dividing workstations into separate networks to prevent cross contamination, you have to consider the pivot points for most malware - email, file shares, etc, which can still allow malware to propagate between networks even if no traffic is allowed directly between them. Some kinds of malware, notably worms who propagate directly from one system to another via some kind of remotely exploitable vulnerability, would be contained by network segmentation, however those sorts of events are becoming increasingly rare (however when they do happen, they tend to be big events). Jerry Sent from my iPhone On Jan 22, 2013, at 5:33 PM, tomright006 () gmail com wrote:Hello All, I need few tips on Network Segregation to prevent spread of Malware. Can I avoid Malware spreading from one network segment to another just by segregating network with access list or firewalls? Thanks, Tom --------------------------------------------------------------------- --- Securing Apache Web Server with thawte Digital Certificate In this guide we examine the importance of Apache-SSL and who needs an SSL certificate. We look at how SSL works, how it benefits your company and how your customers can tell if a site is secure. You will find out how to test, purchase, install and use a thawte Digital Certificate on your Apache web server. Throughout, best practices for set-up are highlighted to help you ensure efficient ongoing management of your encryption keys and digital certificates. http://www.dinclinx.com/Redirect.aspx?36;4175;25;1371;0;5;946;e13b6be 442f727d1 --------------------------------------------------------------------- ------------------------------------------------------------------------- -- Securing Apache Web Server with thawte Digital Certificate In this guide we examine the importance of Apache-SSL and who needs an SSL certificate. We look at how SSL works, how it benefits your company and how your customers can tell if a site is secure. You will find out how to test, purchase, install and use a thawte Digital Certificate on your Apache web server. Throughout, best practices for set-up are highlighted to help you ensure efficient ongoing management of your encryption keys and digital certificates. http://www.dinclinx.com/Redirect.aspx?36;4175;25;1371;0;5;946;e13b6be4 42f727d1 ---------------------------------------------------------------------- --
------------------------------------------------------------------------ Securing Apache Web Server with thawte Digital Certificate In this guide we examine the importance of Apache-SSL and who needs an SSL certificate. We look at how SSL works, how it benefits your company and how your customers can tell if a site is secure. You will find out how to test, purchase, install and use a thawte Digital Certificate on your Apache web server. Throughout, best practices for set-up are highlighted to help you ensure efficient ongoing management of your encryption keys and digital certificates. http://www.dinclinx.com/Redirect.aspx?36;4175;25;1371;0;5;946;e13b6be442f727d1 ------------------------------------------------------------------------ This e-mail, and any attachments thereto, is intended only for use by the addressee(s) named herein and may contain legally privileged and/or confidential information. If you are not the intended recipient of this e-mail (or the person responsible for delivering this document to the intended recipient), you are hereby notified that any dissemination, distribution, printing or copying of this e-mail, and any attachment thereto, is strictly prohibited. If you have received this e-mail in error, please respond to the individual sending the message, and permanently delete the original and any copy of any e-mail and printout thereof.
Current thread:
- Network Segregation to prevent spread of malware tomright006 (Jan 22)
- Re: Network Segregation to prevent spread of malware Jerry Bell (Jan 23)
- Re: Network Segregation to prevent spread of malware Rob (Jan 23)
- Re: Network Segregation to prevent spread of malware Jeffrey Walton (Jan 23)
- RE: Network Segregation to prevent spread of malware Daniel Buentello (Corp - MEIMail) (Jan 23)
- Re: Network Segregation to prevent spread of malware Steve Figures (Jan 23)
- RE: Network Segregation to prevent spread of malware Mcmillan, Arlan (Jan 27)
- RE: Network Segregation to prevent spread of malware David Gillett (Jan 23)
- Re: Network Segregation to prevent spread of malware DaKahuna (Jan 23)
- Re: Network Segregation to prevent spread of malware Michael Peppard (Jan 23)
- Re: Network Segregation to prevent spread of malware Rob (Jan 23)
- AW: Network Segregation to prevent spread of malware Mohammad Ilyas (Jan 23)
- RE: Network Segregation to prevent spread of malware Mohammad Ellyas Bin Hashim (Jan 24)
- Re: Network Segregation to prevent spread of malware Dave, Manish, R. - ESIL (MUM) (Jan 23)
- Re: Network Segregation to prevent spread of malware Sagar (Jan 24)
- Re: Network Segregation to prevent spread of malware Alex Creek (Jan 28)
- Re: Network Segregation to prevent spread of malware Jerry Bell (Jan 23)
- Re: Network Segregation to prevent spread of malware Vic Vandal (Jan 23)
- Message not available
- RE: Network Segregation to prevent spread of malware Grzegorz Dlugajczyk (Jan 23)