Displaying 3 results from an estimated 3 matches for "a1687ae4da1cc44a437d".
2020 Jun 16
2
firewall help request (solved)
...e passed on to the Internet, so your rule needs to be in the
>FORWARD chain. (The OUTPUT chain affects packets that originate at
>your machine.)
>
>Here's a nice collection of diagrams showing how packets flow
>through the system:
>
><https://gist.github.com/nerdalert/a1687ae4da1cc44a437d>
Ah ... Caught it. So here is the IPTABLES method to block output on
port 22 from internal machines on a gateway:
iptables -I FORWARD -p tcp --dport 22 -i
{name-of-internal-interface} -j DROP
So, for example, if your internal interface is, for example,
/dev/enp2s0, you'd write...
2020 Jun 16
6
firewall help request
Folks
I'm struggling with my firewall settings, and would appreciate some help.
I have a gateway machine (currently Centos 7 with IPV4 only) with two
NICs. One is connected to the internet, the other to an internal
network (10.0.0.0/24) of mixed hardware (windows7, android tablets,
android phones, linux boxes) using NAT. I wish to block all outgoing
connects to any external IP address
2020 Jun 16
0
firewall help request
...to block packets that will be
passed on to the Internet, so your rule needs to be in the FORWARD chain.
(The OUTPUT chain affects packets that originate at your machine.)
Here's a nice collection of diagrams showing how packets flow through the
system:
<https://gist.github.com/nerdalert/a1687ae4da1cc44a437d>