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Success. An external Telnet attempt fails when the firewall rules are enabled and succeeds when disabled, all the while, inbound from trend flows in as expected. &nbsp;I was concerned as I have read posts stating the this router would give port forwarding priority over firewall rules, effectively ignoring them for port forwarded traffic. &nbsp;But testing with telnet before and after enabling of firewall rules prove that the router is accurately applying the rules before forwarding.<br />
Thanks for solution!
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Success. An external Telnet attempt fails when the firewall rules are enabled and succeeds when disabled, all the while, inbound from trend flows in as expected.  I was concerned as I have read posts stating the this router would give port forwarding priority over firewall rules, effectively ignoring them for port forwarded traffic.  But testing with telnet before and after enabling of firewall rules prove that the router is accurately applying the rules before forwarding.
Thanks for solution!

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I'm attempting to restrict SMTP traffic to only accept from Trend Micro's IP Range, as we use their hosted A/V, Spam service. &nbsp;<br />
I set up a firewall access rule to accept SMTP sourced from &nbsp;limited to Trend Micro's IP Range<br />
<br />
<br />
How do I test the firewall restrictions once implemented?<br />
<br />
My experience with this is quite limited so please be specific. &nbsp;Thanks in Advance!
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I'm attempting to restrict SMTP traffic to only accept from Trend Micro's IP Range, as we use their hosted A/V, Spam service.  
I set up a firewall access rule to accept SMTP sourced from  limited to Trend Micro's IP Range


How do I test the firewall restrictions once implemented?

My experience with this is quite limited so please be specific.  Thanks in Advance!

Linksys RV082 Firewall Access Rule and port forwarding

Anti-virus software was originally developed to detect and remove computer viruses. However, with the proliferation of other kinds of malware, antivirus software started to provide protection from other computer threats. In particular, modern antivirus software can protect from malicious browser helper objects (BHOs), browser hijackers, ransomware, keyloggers, backdoors, rootkits, trojan horses, worms, malicious layered service providers (LSPs), dialers, fraud tools, adware and spyware. Some products also include protection from other computer threats, such as infected and malicious URLs, spam, scam and phishing attacks, online identity theft (privacy), online banking attacks, social engineering techniques, Advanced Persistent Threat (APT), botnets and DDoS attacks.

Anti-Virus Apps

Hardware-based firewalls provide more sophisticated protection for inbound and outbound traffic than the simple Windows software firewall or the basic NAT firewalls found in routers. These devices implement techniques such as stateful packet inspection, deep packet inspection, and content filtering; and may include built-in antivirus and anti-malware protection.

Hardware Firewalls

A router is a networking device that forwards data packets between computer networks. Routers perform the "traffic directing" functions on the Internet. The most familiar type of routers are home and small office cable or DSL routers that simply pass data, such as web pages, email, IM, and videos between computers and the Internet. More sophisticated routers, such as enterprise routers, connect large business or ISP networks up to the powerful core routers that forward data at high speed along the optical fiber lines of the Internet backbone. Though routers are typically dedicated hardware devices, use of software-based routers has grown increasingly common.