Linux Configuring Problem

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Networking
Hi Dear All, In our office i have some problem in linux, can u help me for solve that problem, if possible. Here we have two servers ( Windows & Linux) Linux is using for internet purpose. and we are assign ip address range 192.168.1.0/24 , windows server is 192.168.1.10 . In Linux machine we have two nic's one for private and other for public , 192.168.1.2 & static ip, here all node computers are using internet through linux (Squid proxy) server , IE Lan proxy is 192.168.1.2 and port is 3128. and linux machine having iptables. as i given below -A PREROTUING -p tcp -m tcp -d 61.195.208.168 --dport 80 -j DNAT --to-destination 192.168.1.10 -A POSTROUTING -s 192.168.1.10 -j SNAT --to-source 61.195.208.168 -A POSTROUTING -j SNAT --to-source 61.195.208.168 In the above scenario we are able to browse internet and send and receive a mail using outlook in all node machines. But i will install the new linux machine and configure the same old linux machine. we are able to browse the net, but outlook is not working. and i try to ping our gate way which one is given by ISP in node machines, its not pinging. I copy the old machine iptables and paste new machine and check the netsat and routing table and ip address configurations, all settings are same like old linux machine , but still i am not able to ping the gate way or any other public ip. I remove the New machine and connect the old machine , i can able to ping gate way and public ip's , Here what i did wrong, pls tell me, and help to correct this problem. Thanks & Regards Shiv
ASKED: March 14, 2006  1:49 AM
UPDATED: March 15, 2006  10:46 AM

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What was the old version/release of Linux as compared to the new versions/release? You state that the new version doesn’t ‘ping’ outside addresses, Can you ping the various workstations from the Linux box?
If it was’Windows’ I would know that you turned the firewall. Some of the new versions of Linux have the same default firewall settings.

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