<div>
Unfortunately in the case of malware, it often can and does disable firewall rules. So using software or group policies is insufficient. You must block it at the network edge with appropriate UTM/firewall rules.
</div>


Unfortunately in the case of malware, it often can and does disable firewall rules. So using software or group policies is insufficient. You must block it at the network edge with appropriate UTM/firewall rules.

<div>
Can you please give me the steps on how I can block it at the network edge with appropriate UTM/firewall rules.
</div>


Can you please give me the steps on how I can block it at the network edge with appropriate UTM/firewall rules.

<div>
Each UTM is different. Configuring a SonicWall is very different than configuring a Cisco which is again VERY different than Watchguard. So no, no easy way to give you a step by step.
</div>


Each UTM is different. Configuring a SonicWall is very different than configuring a Cisco which is again VERY different than Watchguard. So no, no easy way to give you a step by step.

<div>
I don't have a hardware firewall. My SBS is my DHCP. I need to make sure that port 25 passes only through the SBS server.
</div>


I don't have a hardware firewall. My SBS is my DHCP. I need to make sure that port 25 passes only through the SBS server.

<div>
<div class="content wysiwyg-content">
Recently my network got hit by a spamming virus/malware. I need to block email ports on all the workstations. I read other forums that suggest I use IPSec via GPO to block specific ports on the workstations, but none of them are very detailed. <br />
<br />
I open the Group Policy Management, but not sure where to go from there to create a new GPO?
</div>
</div>


Recently my network got hit by a spamming virus/malware. I need to block email ports on all the workstations. I read other forums that suggest I use IPSec via GPO to block specific ports on the workstations, but none of them are very detailed. 

I open the Group Policy Management, but not sure where to go from there to create a new GPO?

SBS 2011 Block Ports On Workstation

Small Business Server (SBS) is a line of server operating systems targeted at small businesses by bundling the operating system with a number of other Microsoft products that would normally need to be purchased or licensed separately. The most notable inclusions are Exchange, SQL Server, SharePoint and ISA/TMG (Microsoft's firewall and proxy server).

Network security consists of the policies adopted to prevent and monitor authorized access, misuse, modification, or denial of a computer network and network-accessible resources. Network security involves the authorization of access to data in a network, and covers a variety of computer networks; conducting transactions and communications among businesses, government agencies and individuals. Networks can be private, such as within a company, and others which might be open to public access.

Network Security

Internet Protocol Security (IPsec) is a protocol suite for secure Internet Protocol (IP) communications by authenticating and encrypting each IP packet of a communication session. IPsec includes protocols for establishing mutual authentication between agents at the beginning of the session and negotiation of cryptographic keys to be used during the session. IPsec can be used in protecting data flows between a pair of hosts (host-to-host), between a pair of security gateways (network-to-network), or between a security gateway and a host (network-to-host). IPsec is an end-to-end security scheme operating in the Internet Layer of the Internet Protocol Suite.