"connected to wifi network", "no internet access" only

Suddenly, while using the Internet, without modifying the network, one host connected to wifi ran out of Internet, while at the same time another host connected to the router with a cable - no problems. Cable Internet directly from the modem. The situation has been going on for several hours.

Something to me, this IP address on the wifi card does not match. Please have a look at the screens or everything as it should be.

-windows7
-router linkys WRT54GH.
-when DHCP is disabled on the router (DHCP reservation) it does not solve the problem

edit:
- interesting that there is no connection on the cable connected between the router and this problem host, i.e. the router's software cannot detect the new device). Although on the same cable, on the same LAN card connected directly to the modem - the Internet is there.

You have a buggy IP address, you don't have a gateway assigned to it, so the connection will not work.
Use your finger to assign any free address from the pool 192.168.1.x, mask 255.255.255.0, gate 192.168.1.1, dnss either auto, or whatever you want (e.g. 192.168.1.1 and 8.8.8.8) and check if it works.

hm, it works. Thank you.

What did he suddenly assign to himself some weird addresses? Because it happened when I was using the Internet and then ... when suddenly ....

Well, because all my life I have set "get an IP address automatically".

It is worth checking the router - whether it is overheating, whether it has been infected with something, whether there are other problems with it ...

what has the possible overheating of the router to change addresses on my network cards? that I ask so ugly.

It seems to me that the disabled DHCP server on the router does not help much in the automatic obtaining of the IP number.

This address (169.xxx) is assigned by microsoft to cards from DHCP as they did not get an address from the server.

pan_adam wrote:

It seems to me that the disabled DHCP server on the router does not help much in the automatic obtaining of the IP number.

It's by the way.
It is also worth giving each device in the local network its own IP address "from the finger" (adding, for example, its MAC address) - then the given equipment will always have the same IP assigned by the router.

today the same problem with the second computer on the network connected by cable to the router.

Yes, after manually setting the addresses, everything is fine. Thanks for the advice.

After all, I am a bit worried about where this behavior suddenly came from.

Then why set dhcp on the network card instead of manually? Just out of laziness, does this protocol do anything else extra?

(i.e. on network cards manually and on the dhcp router. yes?)

kkiczkok wrote:

Then why set dhcp on the network card instead of manually?

Because that's what the router should do - it assigns IP addresses, and let it take care of it.
Manual actions are taken only when it is absolutely necessary and required (connecting the hardware because it has "quite" strange its own IP address).

kkiczkok wrote:

manually on the network cards and on the dhcp router. Yes?)

There should always be AUTO on the network card in the computer / accounts, or automatic IP assignment.

kkiczkok wrote:

after manually setting the addresses everything is fine. Thanks for the advice.

It is worth doing this with any equipment added to the local network - we do it on the router (adding, assigning own IP addresses), then the same equipment will always have the same network address.

on the cisco router set the paprameter dhcp server to enable, it should help!

I am completely dumb.

I repeat, the problem arose when there was this configuration:
- on dhcp network cards enabled
- on ip network adapters automatically
-on the dhcp router enabled and manually assigned mac -ip for each device on the network

after post # 2, I changed on my computer (not in the router) to:
- ip, gate, manual mask
and it worked

so you tell me to go back to the configuration I always had (and during which the problem occurred)?

(ps. this screen with the settings on the router where dhcp disable is, I did a moment after changing this option, previously it was enable. ... I hope ... although I could at one point think that if I manually assign Ip to Macs, then It's not dhcp anymore and I gave disable. I won't give my head. But that would explain everything.)

kkiczkok wrote:

do you want to go back to the configuration I always had (and during which the problem occurred)?

Since it works manually, it should and automatically work.
Since, after entering the data manually into the computer, it connected to the network - on what basis, how did the router know that it should allow this computer to do so?

kkiczkok wrote:

on one host connected to wifi the Internet ran out, while at the same time on another host connected to the router by cable - no problems. Cable Internet directly from the modem.

How can you be sure that someone has not tampered with the wifi network and has not changed something, how do you know if something has changed the wifi network settings in Windows?

And please do not answer "I don't know", because I will answer the same, adding "me the more .......".

kkiczkok wrote:

I changed on my computer (not on the router)

So you have something "rolled up" in your machine's settings.

kkiczkok wrote:

- on dhcp network cards enabled
- on ip network adapters automatically
-on the dhcp router enabled and manually assigned mac -ip for each device on the network

I have never encountered a situation where such a configuration does not work - it must work, because this is its principle and operation.

Anyway, look at the IPv4 address you have in the CMD window, and compare it with the IP address given by the router - it's a completely different pool.

ok everything makes sense.


edit:

KOCUREK1970 wrote:

Anyway, look at the IPv4 address you have in the CMD window, and compare it with the IP address given by the router - it's a completely different pool.
You have an internal IP, allocated by your network provider.

No, I know it. This is an effect, not a cause. But I am convinced by your proposal to look for the reasons in tampering with the settings or some kind of attack, a virus, because I remember that when it happened, I was walking on medium-trusted sites.

thanks for the entries.

This is not the point - just the correct configuration - if it is correct - it has to work.

See what you have set in the router in the Setup-> Basic Setup tab - everything is set manually / manual:
- DHCP server disabled,
- MTU - manual,
- there is nothing in the DHCP server settings (client).
Who set it up and why?

KOCUREK1970 wrote:

- DHCP server disabled,

I did this screen a moment after changing this option from Enabled (but now I will not cut my head)

KOCUREK1970 wrote:

- MTU - manual,

what's wrong here? (I have no idea about MTU, is it supposed to be a car? It was just a neighbor who was setting up a hacker)


No, I already know that all these settings have gone wrong in the router. I didn't take it into account because it happened suddenly while using the net. Now I am convinced that something attacked me and changed these settings on the router.

kkiczkok wrote:

I did this screen a moment after changing this option from Enabled

And correctly it did not work:
Router broadcasts IP from 192.168.1.2,
and you have 169.256.152.202 in manual settings - if you look at it - what is wrong here?

kkiczkok wrote:

what's wrong here? (I have no idea about MTU)

It should also be on AUTO.

Maybe we'll start with - who is the net: company, what exactly is it, radio station, external or internal IP?

Then you could configure everything from scratch - the router has only 3 or 4 places to enter a fixed IP for a given equipment - you can do it with computers - and leave the insignificant equipment to the router's decision.

I am saying that this bizarre IP 169.256.152.202 is the result of this 'attack'. I did not set such an IP.

I am really clear now.

edit:
(but I will add
-vectra, cable, modem
-whatismyipaddress.com: 109.241.89.250
-ISP: Vectra Broadband
)

KOCUREK1970 wrote:

The router has only 3 or 4 places to enter a fixed IP for a given equipment

No, there is no limit. There are 4 fields for entering DNS on the screen. The IP range is from 192.168.1.2 to 4 because earlier it is set (by me) Maximum Number of Users: 3

But it all feels like foam beating to me.

kkiczkok wrote:

But it feels like foam beating all over me

No problem - just take care of yourself.
And I return the points.

KOCUREK1970 wrote:

kkiczkok wrote:

But it all feels like foam beating to me

No problem - just take care of it yourself.
And I return the points.

I meant my slow mind. repeating the same sentences over and over again for several posts.

everything is clear to me now.