Windows 7, fresh install, Windows update won't find updates

Dashrender

I have a brand new cable modem installed, with a ER POE router providing NAT/firewall services and currently DHCP. The laptop is plugged directly into the ER POE, gets and IP and I can surf the rest of the web just fine.

Good sanity check just the same though.

JaredBusch

I have not done a win 7 box lately, but I did a Windows 8.0 system a week and a half ago. Updates ran normally, then the update to 8.1 and then the rest of the updates.

Dashrender

OK now I'm dumbfounded (yeah yeah, jokes).

The ER POE is giving out DHCP, and the DNS it's providing points to itself.

But I can't seem to find what the ER is using to forward DNS queries to. Where do I look for that?

I am able to surf the web through this thing though.

scottalanmiller

I thought that it was in the DHCP settings. Possible that it just hands out the same ones that it is set to use itself.

Dashrender

Yeah I found the DNS tab under the Services tab. I came here to report that, and now see your post.

Though it just says

DNS Forwarding
Cache Size 150 (Default)
Interface br0 (and I can change it to any interface)

But I don't see any way to tell it to forward to something like 8.8.8.8, etc.

scottalanmiller

@Dashrender said:

Yeah I found the DNS tab under the Services tab. I came here to report that, and now see your post.

Though it just says

DNS Forwarding
Cache Size 150 (Default)
Interface br0 (and I can change it to any interface)

But I don't see any way to tell it to forward to something like 8.8.8.8, etc.

I don't think that those are the same settings. Nothing under DHCP?

Dashrender

@scottalanmiller said:

Possible that it just hands out the same ones that it is set to use itself.

I can have DHCP give out any IP for DNS I want. The default is for DHCP to give out the IP of the ER itself - which should be fine. What I'm having trouble finding is where to set the IP's for the ER to use for DNS.

Dashrender

@scottalanmiller said:

@Dashrender said:

Yeah I found the DNS tab under the Services tab. I came here to report that, and now see your post.

Though it just says

DNS Forwarding
Cache Size 150 (Default)
Interface br0 (and I can change it to any interface)

But I don't see any way to tell it to forward to something like 8.8.8.8, etc.

I don't think that those are the same settings. Nothing under DHCP?

I specifically want to change the DNS that the ER uses, just because it's now got me wondering what IP's it's using...

i could solve the problem I have right now by simply changing DHCP to give 8.8.8.8 as DNS, but would leave me eternally wondering what the ER itself was using...

Dashrender

Would someone please move this thread to IT, not sure how it or my other threads wound up here.

Dashrender

OK found the settings for ER itself.

They are in the system tab at the very bottom of the device. and I do have the system currently set to use 8.8.8.8 as DNS for the ER itself.

JaredBusch

@Dashrender said:

OK found the settings for ER itself.

They are in the system tab at the very bottom of the device. and I do have the system currently set to use 8.8.8.8 as DNS for the ER itself.

Ah, but it is not that simple. If you are using a standard business cable serivce that assigned you an IP address with DHCP to your router, the ER will not use those system DNS addresses first.

JaredBusch

To force the ERL to NOT use ISP assigned (via DHCP) DNS you have to disable it.

here is my entire WAN eth port config.

set interfaces ethernet eth2 address dhcp
set interfaces ethernet eth2 description 'Comcast WAN'
set interfaces ethernet eth2 dhcp-options default-route update
set interfaces ethernet eth2 dhcp-options default-route-distance 210
set interfaces ethernet eth2 dhcp-options name-server no-update
set interfaces ethernet eth2 duplex auto
set interfaces ethernet eth2 firewall in name WAN_IN
set interfaces ethernet eth2 firewall local name WAN_LOCAL
set interfaces ethernet eth2 speed auto

The part relevant to this discussion is

set interfaces ethernet eth2 dhcp-options name-server no-update

But you do not have to worry about this if you do not need local DNS at all.
In that case, just set the DHCP in the ERL to give the client google's DNS server.

dhcp setup

Dashrender

Awesome, thanks.

In my situation, I'm using a static IP to connect to my ISP, so I don't have to worry about them over-riding any of my entries.

Dashrender

On the off chance that my USB stick has a virus on it (not that I think it does).. I rebuild this machine again from a DVD I burned with Windows 7 Sp1 on it last year.

I'm still having no luck!

Brand new install, I can get anywhere I want to go, I've changed the DHCP server to give the clients DNS of 8.8.4.4 and 8.8.8.8. I've checked the port status of the firewall with a scan from Shields Up from GRC.com to make sure I don't have some port open where someone else might be able to attack this computer.

It just still won't find any updates (actually never finishes looking - Checking for update - for hours!)

scottalanmiller

Set the PC to static as well while testing.

MattSpeller

I've had that happen before.

On my desk I have a 24port switch with all our VLANS, 4 ports/vlan.

You already know what I did wrong

Dashrender

@MattSpeller said:

I've had that happen before.

On my desk I have a 24port switch with all our VLANS, 4 ports/vlan.

You already know what I did wrong

I have to assume you couldn't surf the web, let alone not get updates.

MattSpeller

@Dashrender just updates, we pull from wsus so wrong vlan = no wsus = sad panda tech trying to figure out wtf happened

edit: could very well have been no intertubes either, luck of the draw which one I used incorrectly

Dashrender

Aww... I'm not trying to use WSUS - I'm trying good ol' MS update servers here.