@thanksajdotcom Ok I understood

@thanksajdotcom Ok Dont get angry.I will confirm my situation and after that I will ask my queries without confusing others

@thanksajdotcom OK My client is not interested to replace but he want to identify the component and he wants as to Solder the board

@thanksajdotcom said:
I need to know which component is fried in the motherboard.How to resolve the issue?

@thanksajdotcom said:
I tried to boot the system without RAM but there is no beep sound heard from the motherboard

@scottalanmiller
I have to assign IP for the VM machines I going to install.The requirements are 512 MB RAM,10 GB Hard disk and Centos minimal desktop.I have to use 3 NIC.That is One NIC for allowing WAN,one NIC for LAN and other for my VMmachine

I went to client place found the system not booting.I have checked the power supply.There was a issue in SMPS and then changed new SMPS.But the system does not boot into the Centos.When I tried to start the system with other system DDR2 RAM.The same error where the system does not boot.The processor is spinning but there is no display shown.Then,I took the CMOS out and reinserted the CMOS.Then jumper pin is also changed and after that also the same issue was Found.The issue is that the system is not booting to the OS but the processor fan is working.How it will be like this?The VGA cable for the system is changed,Power chord is also changed and after the new monitor also changed but the system does not boot.What may be the reason for this issue?

@scottalanmiller No I am talking about only in linux firewall

@scottalanmiller Ok I am having the WAN network as 192.168.1.0/24 and firewall in betwwen the LAN connection.What is the IP needs to be given to Firewall?

@scottalanmiller Whether a firewall can have IP address of Gateway.Whether it is possible to have?

@scottalanmiller Ok I understood

@scottalanmiller Ok Whether any tool is used in Kali linux to do this?Whether that worked in any of the system?Whether DoS is out of Law?

@Ambarishrh Explanation is good but I need to know the protocols with the different real time examples with different scenerios

I recently seen at internet IP spoofing increasing all over world. Why IP spoofing is done and what is the purpose of doing this?

@thecreativeone91 said:

ject before a Accept may render the Accept useless. However in some cases a reject before a accept can be needed.

Ok If I have any i will contact you

@thanksajdotcom OK AJ.Thank u.I will configure the things tommorow at my office,

@scottalanmiller Ok Scott.I have not noted the things properly so only the confusion came here.Sorry to one and all

@scottalanmiller Thank you Scott.I will try this tommorrow and say about this in detail.Do you have explanation for the above mentioned commands because I understood in less

@thanksajdotcom Sorry dont get angry.The server is web server.SMTP,SNMP,POP3,IMAP needs tp be open

@StrongBad It is the diagram to show how the components(firewall) will be connected in a network