Cisco :: C1841 - Unable To Connect DNS Server
Feb 21, 2013
I have a cisco 1841 router and a cisco 2900xl switch. I am trying to get my ACL's to work, but when ever I do an extened acl and let certain one in (80,443,21,etc) my computer gets an internet error saying it cannot conntact the dns server. I've tried severl ways to fix it, but cannot seem to get it to work.
Right now i just have access-list 1 on. Eventually I would like to have only "Apple" and 101 on.
Current configuration : 2050 bytes
!
version 15.1
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption(code)
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Jun 8, 2011
Few days ago I started to get the following error message while trying to connect to the internet using Chrome and IE:"Unable to connect to the proxy server..."I don't have a proxy server configured - nothing is checked in the LAN settings page.In Firefox I don't have that problem - it seems it gets the proxy configuration from elsewhere.
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Nov 23, 2008
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Mar 5, 2013
connected to internet but not able to open the websites and also not able to ping client computer with server.
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Aug 29, 2012
They came and installed a router and disconnected my old one. I then connected my new ISP router to my switch and now Im just stuck. At one point I was able to connect to my drives but was unable to connect to the internet. But once I call the ISP they had me change setting for Ipv4 changed defualt gateway, Ip address and DNS after that I was unable to reconnect to my drives. I've done full shut downs and restarts and nothing has worked. 1 of the computers connects to the server through wifi. I also run a VPN.
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Aug 17, 2012
Online games unable to connect to game server in Vista. Turned off firewalls, what are settings to allow.
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Jan 4, 2012
[code]...
Unable to connect to DNS server/browse internet
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Apr 12, 2011
We are having a network of 7 computers and a server (Ubuntu server). The problem is, two of them are not connecting to the network. When i check the network card of these two systems, it seems working (the green light is blinking). When i replace these systems with a laptop, it connecting to the network and there is not problem at all.
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Jul 16, 2011
Unable to connect to the internet. I am able to connect to my router which is virgin media but cannot connect to the internet. I get a message saying cannot communicate with primary DNS server (194.169.4.100)
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May 13, 2011
i cant connect to most of my friends through xbox and computer, i also cant connect to some games servers. it also says that i have a nat strict. i don't care if my router has no security. i just want my internet to be fast and i can connect to people.
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Apr 26, 2011
we are not able to connect to a outside PPTP vpn server;The scenario is this :Connections are started from inside netwok to a VPN server on the outside zone.
I have add these configs and still not working.policy-map global_policy class inspection_defaultinspect pptp ?i also have a acess-list for it.access-list inside_access_in extended permit tcp object inside-network any eq pptp access-list inside_access_in extended permit gre object inside-network any access-group inside_access_in in interface inside? I am missing something or this is all configs i have to get done ?
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Nov 3, 2011
I'm having problem on my 1841 it won't boot. No response on console but the led lights seems to be normal.I tried removing the CF then turn it on again to see if the router will go to rommon but didn't happen. I did try using another pc thinking the com1 is faulty but still no response on console nor rommon not showing up.
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Feb 7, 2011
For some test in my lab , I ordered on e-bay a AIM-VPN board , they guy told me that it work in a C1841.When I compare to the one I have in my C2621 , they look equal.On both pcb I can read : CN6I280AAA
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Jul 26, 2011
I have C1841 as EZVPN server and remote C1841 as EZVPN client. Connection between them is providers L3 VPN, so it is not over the internet. IPSec tunnels go up with no problem. Client is NEM. Problem is that traffic won't go via IPSec. No packets are encapsulated. I want all trafiic to go via tunnel, no split tunneling here. On client side Dialer0 is outside interface, since L3 VPN is over ADSL. On server's side I have only one interface connected to corporate network. Peer address is server's loopback address.
After IPSec is up, server gets remote subnets as static routes and redistribute them to OSPF. That part works fine, but remote site's traffic doesn't flow over IPSec to the coorporate LAN.
Could be TCP MSS or something like that?
Configuration:
EZVPN SERVER:
!
crypto isakmp policy 10
encr aes 256
authentication pre-share
group 2
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Aug 10, 2012
I can connect to the network but doesn't connect to the internet. I have tried a lot of ipconfig cmd's /renew said "unable to connect to dhcp server" and others didnt work all out of ideas.
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Nov 1, 2011
Work station of domain network stopped accessing the server and internet. Assigned IP address, since DHCP would not hand out automatic IP address. Was working fine before today.
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Aug 21, 2011
I just recently installed a RV220W at my office and (almost) everything works fine. I have noticed that when my iPhone is connected to the RV220 wi-fi network, I get the message "The connection to the server failed" when checking my email. If I disable the wireless on my iPhone, it connects up to the exchange server perfectly fine so it must be a setting with the wireless somewhere but I cannot find it anywhere.....
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Aug 7, 2011
Just updated to the 1.01 firmware on my DIR-815 and now it doesn't handle loopbacks anymore.
For instance, I have a dyndns address of ericnewton76.dyndns.org. This points to my router. Works fine if you're NOT within the router's internal network, ie, outside hosts can get in just fine (try it... http:// , you'll see an IIS7 welcome screen)
However, when INSIDE the network, the requests don't get connected properly, and they used to... ie, I work with code, so my svn repo is at ericnewton76.dyndns.org/svn but inside my network it doesn't connect properly anymore (whereas it used to before firmware update)
So now I wish I could back-peddle to 1.0 firmware.
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Feb 4, 2013
I've tried to upgrade IOS on C1841 router (Cisco IOS Software, 1841 Software (C1841-IPBASE-M), Version 12.4(15)T7, RELEASE SOFTWARE (fc3); System image file is "flash:c1841-ipbase-mz.124-15.T7.bin". using CCP2.5 and couldn't do it as CCP was coming with errors for any IOS. I can't install the latest 15.1 or 15.2 as there is not enough space on flash, it has 192M/64M. So I tried 12.4(24)T8 such as c1841-advipservicesk9-mz.124-24.T8.bin; c1841-advsecurityk9-mz.124-24.T8.bin; c1841-adventerprisek9-mz.124-24.T8.bin but CCP was showing loading errors.So I copied c1841-advipservicesk9-mz.124-24.T8.bin software to flash manually and reloaded the router, now it shows this IOS, but when I start CCP it shows these errors:
-License feature cannot be discovered. This and associated features may not function correctly.
-Static Route feature cannot be discovered. This and associated features may not function correctly.
-Switch Port feature cannot be discovered. This and associated features may not function correctly.
I'm not sure now if that new IOS installed correctly or there is a bug in CCP.I suppose that CCP shouln't show any errors regarding IOS upgrade and after that.Is there a matrix or some kind of pattern for that router IOS upgrade?Should I use a series of upgrades and I can't jump to any IOS?
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Mar 22, 2013
Region : Argentina
Model : TL-WR1043ND
Hardware Version : V1
Firmware Version : latest
ISP : telecentro
I recently purchased a tl-wr842nd, my printer is a hp laserjet 1020 and it is in the compatible list as I seen. The problem is that I connect the printer in the usb routers port and the led do not light up, I tried putting my pendrive to see if the usb routers port wasn't working but it does since the pendrive is accepted and online and the usb led lights.I downloaded and installed the latest firmware but there's no change, I did everything like it saids in the faq 415 where it explains how to install and use printer server with no luck.
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May 25, 2012
i am setting a C1841 to sync its time with another C1841 over net. here is my setting with dont work !
SERVER:
clock set 23:01:00 26 MAY 2012
ntp master 5
ntp source f0/1
[Code].....
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Dec 9, 2012
I purchased the EA6500 a few days ago, and when I'm connected to Cisco Connect Cloud I am unable to select Folder Access / FTP Server / Media Server. I click them and nothing happens.Also, the Cisco light on the router keeps blinking.
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Feb 11, 2011
I have install the administration toolpack on Windows 7 and enabled remote connections on my server 2008 box, When i try and connect with my Windows 7 server manager it does not work.I see stuff on google about enabling a trustedhost with winrm but can't find a way to do this.
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Jun 20, 2011
Apparently the problem seems simple enough however I couldn't get it working. My router is being configured to access a web server in the network which is on port 80. However, port 80 is being used by my router's setup page. Therefore whenever I key in my public IP address, it will just immediately direct me to the router's page.I have also tried opening up other ports like 5050 and set my web server to port 5050. Internally within the LAN itself everyone can access the web server with port 5050. However, going from public IP address with port 5050 doesn't work.
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Feb 8, 2011
I configed a VPN server with incoming connection. client connected to server succesfully.but sever and client havent any data send or receive. the server dont set an ip for client. this is connection properties:
as you see there is no data sending or dara receiving...
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Aug 28, 2012
After getting New Workstations, I wanted to connect that to the SERVER but Windows 7 could not log into domain of our server with Windows Server 2003. Besides following the proper process/steps. I am able to use the printer and internet shared through SERVER though.
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Jun 5, 2012
im trying to connect a dell MD3000i to a Cisco 3750-s but i am not abel to ping the server.the status is up and Protocol is up. but still nothing.i configerd the port to be a acces port and also at trunk port but still nothing is happening.
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Nov 2, 2011
I've been trying (in vain) to connect a USB Wireless device to be able to use it off my wireless network. I have (2) other laptops and (1) other desktop connecting to the router with no issues. For some reason, this old desktop keeps installing an Ethernet device (probably on the MB) and is automatically Configuring the IP address to that instead of the USB wireless device.I've tried uninstalling the Ethernet device but it comes right back after I do a reboot. Even when I disable it, I still can not connect with my Wireless device.
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Dec 18, 2012
I've been trying to open ports to start a server on some games that I play.I used a guide that shows you how to set up the server and open up the port, but I can't get it to work.I've tried making an exception in my firewall,but that didn't work, so I tried completely disabling my firewalls. Nothing. I've gone into my router settings and opening a port this way: But it still doesn't open it up. This is what I'm using to check it.In fact, NONE of the ports are open it seems? No matter what port I try to type in on the port checker, it always gives me that same error.
-Both?
-Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation. All rights reserved.
C:Usersack>ipconfig /all
Windows IP Configuration
Host Name . . . . . . . . . . . . : FellowShip[code]....
Who is your Internet Service Provider (ISP)?
-Comcast
What type of Broadband connection are you using?
-Cable
What is the exact Make and Model of your Modem, Router or Modem/Router Combo?
-Router is WNR2000v3, Modem is SMCD3GNV (One I'm renting from Comcast)
What is the Name of the Anti-Virus, Security or Firewall Software installed from the problematic computer?
-Avast! Antivirus and Default Windows Firewall
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Dec 26, 2012
I am using PC to mobile dialer. It was working fine but now I am unable to login to my wowcall account due to error - Unable to register to SIP server.
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Apr 23, 2012
My laptop is connected to a router via wifi but it keeps getting a DNS fault. I have another PC linked to the same router via WiFi and that works perfectly all the time. I have the same problem on both google chrome and IE browsers where I just get the message telling me that the DNS look up failed. My internet is still connected as I can dial into my remote CCTV cameras and I can ping website ip addresses. Most times I can just turn off my wireless adapter and turn it back on and it works for another hour or so. But sometimes it wont work all day, unless I start my laptop in safe mode, when it works everytime! I have flushed the DNS cache several times but to no avail.
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Aug 14, 2012
I have a server with two adapters: 192.168.1.200 and 10.99.1.200, 10.99.1.200 connects to a cisco router 10.99.1.254 (which I have no access to). This connects via WAN to another network to transfer files to another company. 192.168.1.200 is connected to our local LAN. I have a service that uses FTP to get and send files to a server through 10.99.1.200. I recently had to switch our IP scheme from 10.99 to 192.168 and since then haven't been able to send files to the ftp server. My question is, would a router solve my problem? If so, would I; remove the 10.99 adapter, connect 192.168 to the router, connect the router to the switch, connect the 10.99 gateway to the new router (and update any appropriate routing tables on the server)? The service appears to have issues with using a dual homed server and updating it isn't going to happen anytime soon.
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Nov 21, 2011
I'm using a hotspot and domain network. I have a problem with my server, or might be in my network configuration. The internet connection has stopped working in the connected computers and WI-FI connection.
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