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Thanks a lot ccomley<br />
<br />
I have added 12 rules for 12 different IP's &nbsp;and it's all working fine.<br />
<br />
Thanks<br />
NM
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Thanks a lot ccomley

I have added 12 rules for 12 different IP's  and it's all working fine.

Thanks
NM

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<div class="content wysiwyg-content">
Hello<br />
<br />
I need to change the settings on my SonicWall Pro 100 firewall. <br />
<br />
I need to block all the incoming traffic to my exchange server, only accept certain IP’s (12 of them).<br />
<br />
I need to know how I can do it. I have never created any rules for Sonic Wall Pro 100.<br />
<br />
Basically all the emails for my exchange server will filter out at this company who provide spam protection. I need to make changes in my firewall to only except emails from that company.<br />
<br />
Outgoing emails don't go through them.<br />
<br />
My concern is that if I block everyone else (just allow those 12 IP’s), will my outgoing emails be effected as I am modifying SMTP port 25.<br />
<br />
Many thanks<br />
NM<br />
<br />
I hope my question is clear.<br />

</div>
</div>


Hello

I need to change the settings on my SonicWall Pro 100 firewall. 

I need to block all the incoming traffic to my exchange server, only accept certain IP’s (12 of them).

I need to know how I can do it. I have never created any rules for Sonic Wall Pro 100.

Basically all the emails for my exchange server will filter out at this company who provide spam protection. I need to make changes in my firewall to only except emails from that company.

Outgoing emails don't go through them.

My concern is that if I block everyone else (just allow those 12 IP’s), will my outgoing emails be effected as I am modifying SMTP port 25.

Many thanks
NM

I hope my question is clear.


Configure Sonic Wall Pro 100/ change smtp port 25 to only accecpt traffic from some IP's

Software firewalls, also known as host-based firewalls, provide a layer of software on one host that controls network traffic in and out of that single machine. Most operating systems now include firewall software, but many available software firewalls include central distribution, antivirus systems and disaster recovery.