I want to know about the Ftester tool and my both host are debian systems with iptables as firewall/packet filter. When sending packets from one host to the other I would like to check whether the firewall is working properly or not.
The syntax is not quite clear to me:
sourceaddress:sourceport:destinationaddress:destinationport:protocol:flag:tos
What port and what flag should be used to get it work ?
Does flag should be consider with the port?
Please, I need some explaination about it! I searched about it on web a lot but I still don't understand! Any help will be most appreciated! Thank-you! And sorry for my poor English :)
3 Responses
well it's saying what it says. Source address, source ports <-- that's the ip and port number you're sending the packets from. Destination address, destination ports --> that's the ip and port number you're sending your packets to. This article might help you https://www.digitalocean.com/community/tutorials/how-to-test-your-firewall-configuration-with-nmap-and-tcpdump
OCCUPY4ELES,
Thank you for your comment i go thru to that article and its quite helped me! i want to know that can i do this practical via virtualbox with two different OS ?
I'm glad to hear that article helped but I'm not quite sure I understand. What do you mean two different OS? Like between your OS and VM or your VM and an OS plus another OS? I don't know how to do that. I've never personally done anything like what you're doing so sorry I can't be of more help.
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