I posted a topic about my firewall script a few days ago and got a ton of help. Instead of reviving that topic, I decided to start a new one. <BR><BR>I'm trying to learn iptables firewalling and I ...

如上面的例子所示，每一个数据包都要通过三个内建的链(INPUT、OUTPUT和FORWARD)中的一个。 filter是最常用的表，上文所示设置所有的表规则的基本语法：iptables [-t table] command [match] [target]。 现实中，不一定要用到这里所列出的所有选项，也不一定是以这个顺序。

I have a debian box at IP "11.22.33.44" which is running an vmware turnkeylinux appliace/app. Its running on a host only private network, connected (virtually) to only the host box on a virtual ...

Most of us think of iptables strictly as a firewall tool for keeping remote attackers at bay. But did you know it also can be used to keep local users in line? The experimental match extension owner ...

Dear readers, I appear to have set a Paranoid Penguin record—six months spent on one article series. (It has consisted of five installments, with a one-month break between the second and third pieces.

Iptables, more properly referred to as “iptables/netfilter” because of the two modules that are involved — the userspace module “iptables” and the kernel ...

/sbin/iptables -A FORWARD -p all -s 172.16.1.105 -j DROP /sbin/iptables -A FORWARD -p all -s 172.16.1.25 -j DROP /sbin/iptables -A FORWARD -p all -s 172.16.1.78 -j ...