Frequently Asked Questions
Q14. One of the LAN Systems is affected by Virus and is generating huge traffic; which is consuming the entire internet bandwidth. What can I do?
Ans: Use the MAC Filter feature to temporarily block all traffic from the infected system. To configure MAC Filter, enable Firewall on the LAN interface, and set it as a Trusted Interface. Go to Firewall → Policy, and click on Out. Enable “MAC Filter” feature and configure the
After the infected system has been updated with the relevant
Q15. My LAN Systems are frequently infected by virus. What measures can I take in the router to avoid this?
Ans: A typical firewall configuration is explained below to take precautionary measures against viruses, intruder attacks etc:
Go to Firewall → Interface Configuration, and enable Firewall on all interfaces. Set LAN and DMZ to Trusted, and WAN as UnTrusted Interface.
Go to Firewall → Policy, click on In. Add Port Filters and Permitted IP Rules to allow access to the Company Servers at the LAN or DMZ, which are to be accessible from the internet.
Go to Firewall → Policy, click on Out. Enable File Extension Filter feature, and block HTTP access to file extensions like .vbs, .exe etc. Files with these extensions are most likely to infect a system with virus.
Go to Firewall → Policy, click on Out. Enable Web Filter Feature to block Java and ActiveX, since these scripts can contain malicious code that spreads virus.
Go to Firewall → IDS Configuration, and enable Intrusion Detection for all attacks. This will safeguard the router and LAN systems from the given hacker attacks.
Q16. Why I am unable to access the router’s Web Pages after enabling Firewall?
Ans: This can occur due to any of the below reasons:
You are accessing router from WAN side, but have not configured Remote Access feature to allow remote router configuration.
You have enabled firewall on LAN interface, and have set LAN as UnTrusted. In
this case, configure Remote Access or add inbould firewall policy rules to allow HTTPS access to the router.
To recover, reboot the router so that your previous settings are lost. And then ensure that Remote Access or Firewall Policy Rules are configured appropriately before enabling Firewall.
Q17. Can I configure the router to block messengers like skype etc?
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