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
...
Showing posts with label Firewall. Show all posts
Showing posts with label Firewall. Show all posts
Monday, September 3, 2012
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...
Wednesday, August 29, 2012
CentOS / RHEL: Disable or Enable SELinux Policy Modules
H
ow do I disable or
enable SELinux policy modules under Red Hat Enterprise Linux running on Dell
hardware?
You need to use the semodule command. This command
is used to manage SELinux policy modules, including installing, upgrading,
listing, disabling and removing modules.
Task:
See currently installed modules
Type the following command as the root user:
semodule –l
semodule -l | more
semodule | less
Sample...
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