Linux

Linux
Whether Linux is difficult to learn depends on the person you are asking. Experienced UNIX users will say no, because Linux is an ideal ....

Showing posts with label Iptables. Show all posts
Showing posts with label Iptables. Show all posts

Monday, September 3, 2012

Linux: Iptables Examples For New SysAdmins Part -->3

Before see this post please read my previous post (Linux: Iptables Examples For New SysAdmins Part -->2) #12: Log and Drop Packets   Type the following to log and block IP spoofing on public interface called eth1 # iptables -A INPUT -i eth1 -s 10.0.0.0/8 -j LOG --log-prefix "IP_SPOOF A: # iptables -A INPUT -i eth1 -s 10.0.0.0/8 -j DROP ...

Linux: Iptables Examples For New SysAdmins Part -->2

Before see this post please read my previous post (Linux: Iptables Examples For New SysAdmins Part -->1) #3: Delete Firewall Rules To display line number along with other information for existing rules, enter: # iptables -L INPUT  -n --line-numbers # iptables -L OUTPUT -n --line-numbers # iptables...

Linux: Iptables Examples For New SysAdmins Part -->1

Linux comes with a host based firewall called Netfilter. According to the official project site: netfilter is a set of hooks inside the Linux kernel that allows kernel modules to register callback functions with the network stack. A registered callback function is then called back for every packet that traverses the respective hook within the network stack. This Linux based firewall is controlled by the program called iptables to...

Redhat / CentOS Iptables Firewall Configuration

H ow do I configure a host-based firewall called Netfilter (iptables) under CentOS / RHEL / Fedora / Redhat Enterprise Linux? Icon reference for Firewall Netfilter is a host-based firewall for Linux operating systems. It is included as part of the Linux distribution and it is activated...
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