Navigation

    Netgate Discussion Forum
    • Register
    • Login
    • Search
    • Categories
    • Recent
    • Tags
    • Popular
    • Users
    • Search

    Block incoming WAN ICMP from Internet?

    Firewalling
    3
    4
    813
    Loading More Posts
    • Oldest to Newest
    • Newest to Oldest
    • Most Votes
    Reply
    • Reply as topic
    Log in to reply
    This topic has been deleted. Only users with topic management privileges can see it.
    • J
      jgomez last edited by

      Been reading http://www.troubleshooters.com/linux/pf and it's quite good explaining how pf works.

      However, I can't seem to to be able to block incoming ICMP to my WAN interface. I did the following steps:

      Firewall -> Rules -> WAN -> Add (down arrow) -> Action Block -> Protocol ICMP ->  Destination WAN net -> Save

      I get on my smartphone (no, I am not on wifi using cellular data) and ping my WAN IP address and it replies.

      I think I am missing something another step here?

      Thanks for the help.

      1 Reply Last reply Reply Quote 0
      • Derelict
        Derelict LAYER 8 Netgate last edited by

        Not sure what you're talking about. It's blocked by default unless you pass it.

        Except IPv6 where there are some default pass rules because IPv6 requires ICMPv6 to function properly.

        1 Reply Last reply Reply Quote 0
        • johnpoz
          johnpoz LAYER 8 Global Moderator last edited by

          everything is blocked out of the box unsolicited into your wan.  Unless your talking icmpv6 for sure icmp is blocked.

          So either you have adjusted the default rules or are pinging from the inside or just not even pinging your IP or something is in front of your pfsense, like you isp router.

          How about you post up your wan rules.. And validated if your wan IP is public or rfc1918 or not.

          1 Reply Last reply Reply Quote 0
          • J
            jgomez last edited by

            Think I found out the problem. Since the pfSense box is sitting behind the ISP router, it's the ISP router that's replying to ICMP.

            1 Reply Last reply Reply Quote 0
            • First post
              Last post

            Products

            • Platform Overview
            • TNSR
            • pfSense Plus
            • Appliances

            Services

            • Training
            • Professional Services

            Support

            • Subscription Plans
            • Contact Support
            • Product Lifecycle
            • Documentation

            News

            • Media Coverage
            • Press
            • Events

            Resources

            • Blog
            • FAQ
            • Find a Partner
            • Resource Library
            • Security Information

            Company

            • About Us
            • Careers
            • Partners
            • Contact Us
            • Legal
            Our Mission

            We provide leading-edge network security at a fair price - regardless of organizational size or network sophistication. We believe that an open-source security model offers disruptive pricing along with the agility required to quickly address emerging threats.

            Subscribe to our Newsletter

            Product information, software announcements, and special offers. See our newsletter archive to sign up for future newsletters and to read past announcements.

            © 2021 Rubicon Communications, LLC | Privacy Policy