Is there any way to check which ports are open (Vista)

mike65

As the title says. I'm not getting access to Port 80 according to my internet radio so I need to check whats what if possible

Mike.

CuLT

Shields Up should help you in this regard, though if you're connecting to the Internet through a router it will only tell you what ports on your router are open (provided you haven't got a DMZ set up to your computer).

mike65

Thanks for that, my PC is so secure I'm amazed I'm getting anything at all!

GRC Port Authority Report created on UTC: 2007-10-30 at 20:33:11

Results from scan of ports: 0-1055

0 Ports Open
0 Ports Closed
1056 Ports Stealth

---

1056 Ports Tested

ALL PORTS tested were found to be: STEALTH.

TruStealth: PASSED - ALL tested ports were STEALTH,
- NO unsolicited packets were received,
- NO Ping reply (ICMP Echo) was received.

Trouble is it seems I need port 80 for my radio to work, I've e-mailed digiweb to see what they have to ay on this.

Mike.

CuLT

What router do Digiweb provide? I'd imagine you can simply set up port forwarding (same sort of thing you'd need to do with bittorrent or VNC, etc).

mike65

I'm on Metro which uses a Thompson modem. linked to a linksys router (for the internet radio to work). I dunno how to alter parameters with any condifence.

Mike.

CuLT

Well, as long as the Thompson is a modem (as opposed to a modem/router), port forwarding should be straight forward enough.

You can find a list of routers and detailed guides on how to port forward here.

Best way to see whether or not your Thomspon is going to cause a problem is to remove the linksys from the equation and plug the Thompson straight into your computer, then run that that Shields Up test again.

Moriarty

The thomson modem is just a modem, there's no firewall or anything else running on it. You'll just need to configure the linksys router as Cult mentions.

watty

You don't need ports open to stream radio, do email or browse web.
Opened ports are only if YOU are the server.

DMC

Hi Mike, knowing the radio, it works independent of the PC. There is no link to the PC. The radio doesnt talk to the PC in order for it to get to the internet, it only talks to the Linksys router.

Is it possible that the Linksys router doesn't have the DNS settings for Digiweb?

mike65

Okay at this point I need to know what the digiweb DNS is, and where to put the info on the linksys admin website.


Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Intel(R) 82562V-2 10/100 Network Connecti

Physical Address. . . . . . . . . : 00-1A-A0-8A-37-14
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::6933:dd6e:3ac6:1ef6%9(Preferred)
IPv4 Address. . . . . . . . . . . : 192.168.1.100(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Lease Obtained. . . . . . . . . . : 30 October 2007 15:13:30
Lease Expires . . . . . . . . . . : 31 October 2007 15:13:56
Default Gateway . . . . . . . . . : 192.168.1.1
DHCP Server . . . . . . . . . . . : 192.168.1.1
DHCPv6 IAID . . . . . . . . . . . : 201333408
DNS Servers . . . . . . . . . . . : 83.147.161.146
83.147.160.3
83.147.160.2
NetBIOS over Tcpip. . . . . . . . : Enabled

I take it 192.168.1.100 is the magic number? or is it the DNS server numbers, if so does it go in the static DNS 1 dialogue box?

Mike.

mike65

Okay this gets worse, last night I was deined internet access complelety. This morning I by-passed the router and was on line. Hooked up router and again no access. So something is up with the linkysys it seems.

http://img.photobucket.com/albums/0903/mike65/routerstatus.jpg

http://img.photobucket.com/albums/0903/mike65/routerstatusbox.jpg

I'm going to be off-line for the next 3-4 hours. If anyone has any great ideas meantime I'll be grateful.

Mike.

watty

It has the Digiweb DNS already:
DNS Servers . . . . . . . . . . . : 83.147.161.146
83.147.160.3
83.147.160.2


On the Radio and PC the 192.168.1.1 is the preferred DNS. The other DNS are only needed in the Linksys router.

I doubt it is the Linksys.

Since you are using a linksys router you can disable firewall service completely on PC. The linksys is the firewall.


DNS on the Internet though seems a bit strange since sun Morning.

mike65

Riiiiiiiiiiiight.

Strange DNS on the interweb is beyond my control.

Mike.

DMC

Might not be beyond wattys, though!

For reference, do Metro users get a static IP address?

There is also a firmware update for the Linksys on their website.

mike65

Its static for me.

I downloaded the firmware do I open it within the admin page?

Mike.

DMC

Looking at the first screenshot, you have it set to "Automatic Configuration - DHCP". I'd change that to static, might not make a blind bit of difference..

mike65

http://img.photobucket.com/albums/0903/mike65/networkstatus.jpg

http://img.photobucket.com/albums/0903/mike65/linksysDNSandstaticIP.jpg

Made zero difference.

Mike.

DMC

Um... I don't think you have a static IP address, as the IP addresses in the first image in your post at 10:12am today is different from the first image in your last post. Go back and change it to Dynamic.

Also, on the linksys router, the DNS is not set to Digiweb's DNS. Add in what watty quoted earlier.

watty

Ok VERY SLOWLY!

1) The Linksys router has TWO networks. The WAN (connection to Metro Modem only and thus to Internet, Wide Area Network) and the LAN (Local Area Network, connections for everything in your house)..

The two networks have traffic (data) routed between them using NAT. A Firewall blocks evil vermin on the Internet from your LAN.

NOTE The IP and DNS and DHCP settings for the two networks (LAN & WAN) have almost NO relationship at all.

The IP and DNS for the WAN part must be "automatic" or DHCP. Even though, oddly enough your Linksys will mostly get the same IP address from Digiweb if you are on same sector and same Modem of Metro. So from "Internet" point of view it looks very like a static IP. The IP and DNS for the WAN part of the Linksys Router/Firewall are thus "filled in" automatically via DHCP. DHCP can in fact be used to "hand out" Dynamic (changes frequently) or "Static" (not really changes) IPs. It also enters the correct DNS. The Open DNS are MUCH slower than Digiweb DNS. Unless Digiweb's network is broken (in which case more than DNS won't work), there is no reason to change these to slower "Open DNS".

2)
From the point of view of the Modem, only the Router and Digiweb's base station exist. It connects those two together. Thus there is ABSOLUTELY NOTHING to change on the Modem. It can't connecto to anything else. The Base Station tells it what IP and DNS to Give out using DHCP. If you did manage to enter a Static IP on the WAN side of the router, you might not connect at all. The ONLY IP that can work properly is the one the Modem is told to give to whatever is plugged in (a single PC -OR- a Router), this does usually be the same IP all the time.

3)From the point of view of the LAN, (PC & Wireless, etc) only the Router really exists. You may use Static IP (each device different) or Dynamic (The router usually is the DHCP server) on the LAN. Every device on the LAN needs to know how to find the Internet. Thus the GATEWAY address of ANYTHING connected to the LAN, is the LAN IP address of the Router, ALWAYS different completly from the WAN IP address of the router.

Then Anything that does not match 192.168.1.* (Subnet = 255.255.255.0) is sent or fetched from the Router = Gateway (perhaps 192.168.1.1). The NAT feature of the router translates to / from the WAN IP which is your public address on the Internet.

The Router acts as a proxy and cache for DNS requests (turning Names into IP addresses). So DO NOT use the Digiweb DNS IPs on the devices (PC, Wireless) on the LAN. That will slow everything down as the request has to be NATed everytime. Instead the DNS for every gadget/PC on the LAN must be the same as the Gateway address, the IP of your router. Then requests for the same name in a short period of time are only asked once on the actual Internet, otherwise the cached value is used by the DNS proxy in the Router.

On a Network you may have only one DHCP server so make sure DHCP server service is OFF on Vista/XP. The DHCP client service is only needed on Vista/XP is you are using LAN DHCP from the Router, with a small number of devices you can use static, the router normally 1 and PCs / radios etc 11,12, 13 etc, i.e. if subnet is 255.255.255.0 and Router is 192.168.1.1 on LAN you might use 192.168.1.11 and 192.168.1.12 for the first two devices.

Usually Router DHCP servers start at 100 for handing out IPs. (i.e. 192.168.1.100) You can't use 0 or 255

EVERYTHING MUST have the same subnet, 255.255.255.0 allows 254 devices.

If one device had for example 255.0.0.0 as subnet, very strange things happen.


I'm afraid the above is slightly Lies For Children, as you will not want to read the book. I have simplified.

mike65

Cheers.

I'll read the above in the morning as very little makes its way in after tea-time.

http://img.photobucket.com/albums/0903/mike65/advanceroutinggateway.jpg

http://img.photobucket.com/albums/0903/mike65/advanceroutingrouter.jpg

http://img.photobucket.com/albums/0903/mike65/routingtable.jpg

Now in plain call centre English tell me what goes were.

Mike.

watty

You don't want to be changing any of the advanced routing settings. Only for specialist non Internet applictions like interconnecting two LANS.

The "normal / default" setting is for automatic NAT routing between the ethernet connected to Modem (WAN or Internet) and the separate 4 port ethernet + wireless connected to your PC and Radio (LAN = Local Area Network = Home Network).

By default the only things you need to do with that kind of router when you unpack it is:
Turn off Wireless or Give Wireless big "WPA PSK AES" mode key (also called WPA2 PSK) and same long random key on all your other WiFi Gadgets.

Make sure WAN (Internet) ethernet is DHCP, not PPPoE (Some kinds of Modem need PPPoE, but not Metro).

Decide if LAN ethernet should be default DHCP server or all static IPs

Stick the Router LAN IP as DNS & Gateway on all your gadgets unless the Router is DHCP server,

mike65

Okay I think I've found the source of the problem. The router is a bad 'un. I just tried a fresh install of the set-up and it said there was a hardware problem - it pointed the fingure at the PC network card, I swapped the cable no joy, I reconnected the modem using the same cable and it connected fine. So its not the network card or the cable.

If the hardware is borked in some way, it would maybe explain why the problem occured in the first place as I had'nt touched anything to cause a problem.

Mike.

DMC

If you ran the setup disk again, did you actually press the reset button on the back of the device?

mike65

Nope. Agh.

Mike.

mike65

I reset to factory spec and reinstalled, got stuck in an "admin" loop, realised and cancelled but the important stuff had been inputted by that point (also got a language upgrade error ). Plugged the Logik in with hope not expectation but its receiving data fine.

I'll only be happy happy I switch everything off tonight and its still working in the morning!

Mike.

watty

Don't switch off the Modem. Please. Can't run diagnostics remotely if it's off.

mike65

Indeed, I only unplugged the modem for the purposes of installing the router.

Mike.