From: Joe Vender <[EMAIL PROTECTED]>
> I've enabled the firewall in /etc/rc.conf via:
> firewall_enable="YES"
> firewall_type="client"
>
> But, ports 0 and 1 show as CLOSED, not STEALTHED at grc.com shieldsup! scan.
> I'm on a standalone desktop computer with no LAN and am using a dialup
> connection to access the internet. I've set the firewall type to "client".
> What changes do I need to make to the firewall configuration file in order to
> stealth the ports without causing any local problems?
>
> Joe Vender
>
Hi Joe,
It's been awhile since I used FreeBSD as a firewall, but I believe I had to
enable the following sysctl's:
As root, do:
sysctl net.inet.udp.blackhole=1
do the same for:
net.inet.tcp.blackhole=2
You can use either a "1" or "2" for TCP. I would use a "2".
man blackhole - for more details.
If they work for you , add them to /etc/sysctl.conf as just:
net.inet.tcp.blackhole=2; so they'll be turned on when you reboot.
Bob
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