Internet Problem in centOS [Closed]

Ask a question Manindra
I'm having a new problem on an linux CentOS machine that has worked for the last two years. I have an DELL PowerEdge Server that is wired to a router and is receiving an ip address correctly but will not connect to the internet via any of my applications (firefox,Seamonkey). Other machines like mobile phones can access applications but cannot browse anything, using the same router. I have tried ifconfig and my IP is pinging. router ip also pinging but will still not work. I've disabled firewall to test to see if a setting changed. Any suggestons are appreciated
centOS machine.

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