jolenzy's blog

I was thinking about the path of my blog, and changed my decision for now. I realized that it's not my point to teach about penetration testing, and I need to write more actual stuff.

So, in the future, I won't continue to write about steps in penetration testing, and some global points of ethical hacking.
I'm going to write about real things, situations, scenarios etc. So stay tuned!

So, here are some very usefull commands and tips in everyday Linux use.

Configuring additional IP addresses:
# ifconfig eth0 10.4.0.1 netmask 255.255.0.0
# ifconfig eth0:0 10.4.0.2 netmask 255.255.0.0

Changing MAC address:
# ifconfig eth0 hw ether 00:11:22:33:44:55

Adding and deleting a route:
# route add 210.110.0.0/16 192.168.10.10
# route delete 210.110.0.0/16
# route add default 192.168.10.10

To see open ports:
# netstat -an | grep LISTEN //displays all Internet connections
# lsof -i //displays list of open sockets
# netstat -tup //displays list of active connections to and from system
# netstat -tupl // displays list of listening ports from system

IP forward for routing(pay attention on this :) )
# cat /proc/sys/net/ipv4/ip_forward // to chek IP forwarding -> 0=off, 1=on
# echo 1 > /proc/sys/net/ipv4/ip_forward //turning IP forwarding on

Print routing table:
# route -n

Add route permanently:
# static_routes="someroute"
# route_someroute="-net 210.110.0.0/16 192.168.10.10"

Firewall stuff:
# iptables -L -n -v // for status
# iptables -P INPUT ACCEPT //open everything
# iptables -X //delete all chains
# iptables -F // flush all chains

That's it for now. Ciao!