error installing iptables

[sajil2]

hi there i am using ubuntu 12.04 i get error while installing iptables.



Do you want to continue [Y/n]? Y
Setting up iptables-persistent (0.5.3ubuntu2) ...
FATAL: Could not load /lib/modules/2.6.32-042stab108.5/modules.dep: No such file or directory
dpkg: error processing iptables-persistent (--configure):
subprocess installed post-installation script returned error exit status 1
Errors were encountered while processing:
iptables-persistent
E: Sub-process /usr/bin/dpkg returned an error code (1)

[cariboo]

Unless you uninstalled iptables, you shouldn't need to, as it is installed by default. If you want to check if it is installed use the following command:


which iptables

which should give you the following output:


which iptables
/sbin/iptables

[sajil2]

i ran the command which iptables. and i got this
/sbin/iptables

what next i can do?

[sajil2]

i did fresh instalation and started all over again i still get this.

sudo apt-get install iptables-persistent
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Unable to locate package iptables-persistent

[cariboo]

Why do you want to install iptables-persistent? You have iptables installed, all you need is to create a set of rules, using gufw.
To start the firewwall from the command line use the following command:


sudo ufw enable

once you started it, use:


sudo ufw status

to check the rules use:


sudo ufw status verbose

the output of a default install should look something like this:


cariboo@alexis:~$ sudo ufw status verbose
Status: active
Logging: on (low)
Default: deny (incoming), allow (outgoing), disabled (routed)
New profiles: skip

Once you've made sure the firewall is up and running you can check the default rules using;


sudo iptables -L

[Doug S]

It looks as though you are using an odd kernel, and so it is not surprising that iptables-persistent has trouble installing.
What do you get for "uname -a"? On my 12.04 ubuntu server I get:
doug@doug-64:~/tcpdump/077$ uname -a
Linux doug-64 3.2.0-86-generic #123-Ubuntu SMP Sun Jun 14 18:13:12 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux
iptables-persistent solves a problem that does not exist anyhow, as there are other ways to make your rule set load during boot. For example, here is what I do:
doug@doug-64:~/tcpdump/077$ cat /etc/network/interfaces
# Smythies 2011.11.15 Can I execute my firewall script from here
# instead of /etc/rc2.d? Add it.
# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

# The loopback network interface
auto lo
iface lo inet loopback
pre-up /home/doug/init/doug_firewall

# The primary interface (d-link PCI card)
auto eth1
iface eth1 inet dhcp

# Local network interface (uses built in ethernet port)
auto eth0
iface eth0 inet static
address 192.168.111.1
network 192.168.111.0
netmask 255.255.255.0
broadcast 192.168.111.255