India Broadband Forum

meetdilip

Hi,

My IP changed to 169..... from 192.168.1......
This is not the first time it has happened. I had to enter the values manually and now I am able to connect and post. Please shed some light on this problem. How could it change when I did nothing. I just left the system for a while and when I came back it was showing limited or no connectivity.

Thanks in advance.

sonofchacko2

your system may affected with dns changer malware programme .scan and cure it.

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skap

DHCP (option in your modem/router) assigns IP address to your computer. If you get any IP in the range of 169.254.0.1 to 169.254.255.254, it means either your computer is not able to reach DHCP or leased configuration fails.

Do you use Wireless?

@sonofchacko2
how do you said that it is malware?

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Jaganathsamal

Is ur pc infected with a virus or malware ?

meetdilip

I use Nokia Siemens C 2110. It is not wireless. I use PPPoE. It happened twice before. When I tried to install Comodo Firewall. Both time, I had reinstall Windows. Because even disabling or uninstalling didn't gave results.

Now I use Zonealarm Firewall. It is almost 2 weeks since I have this new installation of Windows. It didn't happened before. Earlier I tried to change the IP manually as I did this time. But it didn't work, so I formatted C drive and reinstalled Windows. Luckily, this time when I entered the values manually, it worked.

Quite possible.

I tried a smart scan using Adaware. It couldn't find any.

skap

Check whether your software firewalls block any DHCP traffic?

Moreover, DHCP is for reducing administrator job of manual configuration of IP address and also for beginners who may fill bad entries in TCP/IP settings.

For less no of computers and that too for home and cafe use desktops, manual configuration is recommended. This avoids unwanted DHCP traffic which transmits every interval of lease period (this is the period when your computer talks to DHCP router that i am ALIVE and i use this IP).

meetdilip

How can we check that. I use ZoneAlarm free.

It was working fine till last night.

skap

are you in stealth mode?

did you try adding your DHCP server (modem/router IP address) to trusted zone?

meetdilip

Yes. For more than a week if I am correct.

Sorry. I don't know how to do this.

skap

By default DHCP leases every 8 days! (not sure abt in modem and router). and you got this after a week!

if i remember the screens of Zone Alarm,
1. goto Zone Alarm
2. then Firewall page
3. Choose Zone tab
4. Add your Modem and/or router IP address
5. Choose OK/Apply