How to hide tcpip port to be visible from a scan ?

MaxspeedMaxspeed
in Firebox - QoS and Traffic Management

Hi

When I use shields up from grc.com the trustealth analysis failed for port 0 and 646 LDP and 711 TDP the status is closed ! for other ports are stealth (or drop no answer).

My question is : how to drop ports you dont want ? not just closed,

with some firewall you have 3 options, open, closed or drop (stealth)

How to do a rule with drop ?

Thank you for your answer

Comments

  • Bruce_BriggsBruce_Briggs

    From incoming access, all ports & protocols are denied by default unless you have added any incoming firewall policies.

    For outgoing access, the Outgoing policy allows all TCP & UDP ports except for the few ports which are in the Blocked Ports list.
    A Ping policy allows outgoing pings (part of ICMP protocol)

    The default for not allowed or specifically denied is drop (stealth).
    Closed would be if one selects "Denied (send reset)" on a policy instead of Denied.

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