LAN is OK but no Internet when we bypass firewall connection

July 22, 2017 at 07:42:45
Specs: Windows server 2008
we have active directory server 2008 and connects local users. server is connected to sonicwall firewall.
server ip is 192.168.1.2
firwall (which is also gateway) is 192.168.1.1
we configured our server dns as xxxx.com
n ips as above n dns with our ISP DNS.

however, when we remove internet cable from firewall and connects to switch we are not getting internet though LAN is working fine.
When we connect through firewall net is working fine.
PL. suggest where are we going wrong.


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#1
July 22, 2017 at 13:43:31
What did you get, when you do a tracert google.com ?
And,
what did you get, when you do a tracert 8.8.8.8 ?

Maybe, you have a dns issue.


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#2
July 22, 2017 at 19:50:15
Microsoft Windows [Version 6.0.6002]
Copyright (c) 2006 Microsoft Corporation. All rights reserved.

C:\Users\Administrator.XXXXXXX>tracert 8.8.8.8

Tracing route to google-public-dns-a.google.com [8.8.8.8]
over a maximum of 30 hops:

1 1 ms 1 ms 1 ms 10.132.0.1
2 3 ms 21 ms 4 ms broadband.actcorp.in [183.82.XX.XX]
3 * * * Request timed out.
4 44 ms 44 ms 44 ms 72.14.194.18
5 46 ms 46 ms 46 ms 108.170.226.63
6 45 ms 45 ms 45 ms 209.85.143.179
7 46 ms 45 ms 45 ms google-public-dns-a.google.com [8.8.8.8]

Trace complete.

message edited by teamsree


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#3
July 23, 2017 at 01:16:59
It sounds as if your firewall is acting as a router providing NAT translation. Without this you cannot connect a 192.168.1.x address to the Internet. Where you are going wrong is bypassing the firewall. Why would you want to do that?

message edited by ijack


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#4
July 23, 2017 at 01:24:11
We wanto bypass the firewall as its okd model and no support.
Second when v tried to access firewall 192.168.1.1 due to recent firmware v r not able to and throwing cypher error.
Hence v want direct access to internet on our domain.

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#5
July 23, 2017 at 04:55:19
Then you need to replace the firewall with a router.

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#6
July 23, 2017 at 05:09:42
If you simply remove internet cable from firewall and connect it to a switch, this can't work.
The server itself has configured the default gateway to 192.168.1.1, I guess.

But 192.168.1.1 has no internet connection anymore, so what happens?
NOTHING!

So there must be another router or modem, which connects you to the internet.
If so, you have to use the internal ip address of that router.

Assuming, you have a modem and you have static public ip address.
If it's a modem, you need to configure a second network interface in the server with a public ip address you got from your ISP.

But, keep in mind, it's a real bad idea, to connect a Microsoft Server directly to the internet !!!


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