From what you said, it sounds like you have no internal DNS. If that's true, you won't get to the internet. You need a DNS server configured.
Mark
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Network unable to connect to internet
We recently installed a FGT100A in our regional office and created an IPSEC VPN back to HQ for file sharing and email access etc. There is also a server in the regional office for file and print purposes.
When i left it on tuesday everything was working fine - internet access was available and the vpn was working as expected. On wednesday nothing worked. I couldnt connect to any of the pcs or the server remotely so i went back up to the office and for some reason the DHCP settings had changed. I fixed this and the VPN was functional again, however the client pcs/servers could not access the internet. I could ping out from the FGT100A so connectivity was there - there was no rule stopping it.
I was going to use the server as a DHCP/DNS server but it has also died. As a stop gap i need to know how to configure the Fortigate and the clients to allow web access - i have entered static IP addresses into the clients and created rules to try and allow them to access the internet but this has not worked.
Any help would be greatly appreciated
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Answers
If you are using the server to do DHCP, and for some reason the fortigate got set to DHCP mode as well, you could easily be "double-NATtin" which would prevent any Internet access from the remote site. I would try the old standby of powering down all network components at the remote site, and 1 by 1 power them back up. Start at the point closest to the Interent at the remote site (Fortinet?) Power it on and wait 1 minute or so until it is FULLY up and operational. Then go to the next component in the network chain and power it uip, wait a full minute or so for it to fully power up, etc., until you get to the local clients. Sometimes a simply step-by-step power up is needed to clear stuff up. Be sure to check the DHCP setting on all network equipemnt at the remote site. Ensure you are getting good access to the DNS server from the main server. If not, you can try forcing DNS settings into the Fortinet as a stopgap to see if it makes a difference.
Jim
If you are sure the problem is the fortigate,
verify your ip settings for your wan1 and your internal interfaces via System->Network
verify your gateway of last resort via Router->Static
there should be a static route in their with 0.0.0.0/0.0.0.0 and the gateway of your isp next hop
verify your outbound firewall policy via Firewall->Policy
you should have an entry with internal to wan1 any any, and the nat should be checked.
then verify your dns. if you have no internal dns, then you can set the computers up to use the fortigate as their dns server. In System->network->Options enter the ip addresses of your pri and sec dns servers and check the box for foward for internal
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by: Freya28Posted on 2007-12-13 at 05:34:19ID: 20464122
are you sure that the clients have the proper default gateway configured?
and are you sure that the fortigate is properly NATing the internl network?