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can't ping dmz zone ip through checkpoint firewall

Posted on 2001-09-18
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Last Modified: 2013-11-16
we have a  checkpoint firewall 4.0 running in nt 4.0 ,

and we divid three zone in firewall so dmz , internal ,

and internet external zone . From internet , people can

ping the real ip and access the web server which in dmz ,

but in internal zone , we can't . we have check our

internal zone 's ip have all permission to access anywhere

through the firewall .HOw can we ping and access the real

ip which is in dmz zone .

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Question by:adragon218
7 Comments
 
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Expert Comment

by:andyalder
ID: 6490103
Are you trying to ping the servers in the DMZ by name or by IP address? If it works OK by address then probably you will have to put hosts files on all the local PCs or have an internal DNS server.
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Expert Comment

by:bsadlick
ID: 6490226
Can you give us a detailed IP map?

You say that you can't ping, but can you do anything else? Could it be that you need routes set up on the firewall?
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Expert Comment

by:jwalsh88
ID: 6490266
you should list a map here of how things are layed out and also post the rule base.  That would make it very easy.  Without them everyone will just be making guesses.
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Expert Comment

by:scott_renton
ID: 6490929
Check your rules, and make sure that ICMP packets are passed from the DMZ BACK to your internal network.
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Accepted Solution

by:
mikecr earned 30 total points
ID: 6492145
You should have a rule on your filewall with the source being your network and the destination being either the box in the DMZ that your trying to reach or that whole address range of whatever is in the DMZ. Review your rules carefully and make sure your cleanup rule is not dropping everything.
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