Link to home
Start Free TrialLog in
Avatar of joepcs
joepcs

asked on

Using mobile hotspot for domain WAN problems

I am on the east coast, and we lost our primary internet connection after the hurricane.

I have a verizon 4g hotspot, and a wifi to Ethernet converter.  The converter passes through the DHCP settings from the mobile hotspot, and should effectively be invisible.

When I plug this into a second NIC on a server, let it DHCP and get rid of the first nic's gateway and DNS, life is great.  I get fast full internet access.

However, when I plug it into the WAN side of the firewall, and set the firewall up for NAT with DHCP, I get very slow access, and tons and tons of failed DNS lookups.

We have a DNS server at 192.168.1.10, and the firewall is the network's default gateway and 192.168.1.1 .

The hotspot can only lease addresses in the 192.168.1.x range, so I can't change the subnet. I changed it to an address not used, but I'm not sure, does that become the gateway?

How can I re-configure the network and DNS servers to work with the verizon hotspot? I'm thinking this is a DNS /NAT problem more than anything.   If I set the firewall to passthrough, it pretty much crashes.  Its a sonicwall TZ170.

Thanks for the help,

Joe
Avatar of IanTh
IanTh
Flag of United Kingdom of Great Britain and Northern Ireland image

is the failing dns down to the local problems the east coast is still undergoing ?

yes the hotspot is essentially the router so change the ip address and yes that's the gateway

you slowdown when you plug it into the wan side how much slowdown is there ?
ASKER CERTIFIED SOLUTION
Avatar of pergr
pergr

Link to home
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
Start Free Trial
Avatar of joepcs
joepcs

ASKER

I will double check the DNS server.  I know its not an east cost problem, since I get decently fast connections when going to just one computer and skipping the whole network.  

The gateway needs to be changed from the firewall then to the verizon hotspot's IP?  

Thanks for the help,

Joe
Another way to test, is to use the firewall, and a laptop behind, but to have the laptop use the  google dns (8.8.8.8) instead of the internal dns.



Anything inside the firewall should use the firewall (192.168.1.1) as its default gateway.

You can not really have 192.168.1.x both inside and outside the firewall. If you can not change the outside, change the inside network.
Avatar of joepcs

ASKER

Changing the DNS server's address worked great.  That fixed the problem.