Cisco WAN :: LAN Computers Failing To Access Internet - 1941 Router
Jun 5, 2012
i am not sure if this question has been raised before. My company recently bought a Cisco 1941 router and we have been using a Lynksis router connecting to our ISP using WiMax all along. I have configured the new cisco1941 to the best of my knowledge but something strange is happening on my network. I can open www.gmail.com from any machine but i cant open anything else even www.google.com . What could be causign that ?
My config is as follows :
Current configuration : 4478 bytes
!
!
No configuration change since last restart
version 15.1
[Code].....
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May 17, 2011
I'm trying to configure a Cisco 1941 to connect to multiple Amazon VPC instances. Each VPC instance brings up 2 x IPsec over GRE tunnels with BGP in to the EC2 cloud and enables flat extension of the corporate LAN. Basically. you can spin up EC2 instances in a private subnet and route to them across the VPC link from the corporate LAN.
The Amazon configuration is templated and not designed to support multiple instances on one customer access gateway - however, I want to overcome this and find a technical solution around bringing up a second physical router. I've got VRF configured and working for the first instance, but when we add a second VRF to the configuration IPsec fails. The second VRF is essentially identical to the first.
We're potentially looking at a licensing issue with IOS 15.x, the version we're running is...
ipbase ipbasek9 Permanent ipbasek9
security securityk9 Permanent securityk9
data None None None
[Code]....
However, the IPsec configuration is complete and all keychains etc. are in place as they should be.
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Mar 23, 2011
Every day for the past week my Internet access goes down. I have a netgear router connected to Comcast modem. I have to reset the modem then the router constantly and it gets irritating. I called comcast and they say reset them. But why should I have to constantly reset.... Sometimes I just ignore it and it comes back up later... what is going on??
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Jul 14, 2011
I cannot telent to 1941 router from a Window 7 PC and I can a Window XP PC. Telnet is enabled on Win 7 PC. I upgraded 1941 to latest IOS.Compters running Windows XP can telnet to router and hit the internet. Computers running Windows 7 cannot hit the internet. I replaced the 1941 with a 1760 router and Win 7 computers can telnet to router and hit the internet. I used the same config from the 1941 on the 1760.
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Jul 10, 2012
I have a 1941 Cisco router with WIC-!AM-V2 card that is uning pots( regural phone ) line for data traffic.the problem I am having is the line is establishing connection but it intermittently dropos.The router is configured to dial to Centraal office and I have more that 100 other locations with the same setup that are working fine. The only differene on htis one is it is going thru a PBX line.
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Nov 17, 2012
I have a WRT54G that has worked fine for years, with some PCs hooked up with Ethernet and various other devices connected wirelessly. I came home this afternoon and nothing going through the router could connect to the internet. I've made no changes to anything recently.
I did troubleshooting with Comcast, and we determined that when their modem was hooked up directly to my computer then that computer could connect to the net. Problem solved as far as they are concerned--my router is busted. But I can still connect to the router, and enter its admin screen, and everything looks fine there. The computers on the router can all see each other. So the router is working.
Once I hooked it back up to the modem my computers all lost their internet, but the router does get an IP successfully from Comcast. And it even assigns IPs to my computers that are hooked up to it. It's just that for some reason they still cannot get past the router.I used the ping function in the router admin site and the router pinged Google no problem. My PCs can ping the router without difficulty. But the computers cannot ping Google.
I've tried every combination of power cycles and reboots you can name. I've tried duplicating the MAC address of the PC that connected to the internet onto my router. None of it has made any difference.
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May 19, 2011
I'm using a Cisco 1941 router with two WAN interfaces. One is directry connected to our ISP and one is connected to another router wich is then connected to another ISP. Hosts on the LAN cannot access the Internet at all but the router has Internet access, im guessing its something simple but i cant seem to spot the error, i have removed the ZBF configuration from the interfaces. [code]
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Dec 11, 2012
I cant seem to access a webpage. I have 2 computer hooked up to a router and the router to a cable modem. One computer works fine and the other all of the sudden stopped being able to access the web. It says I have a connection but internet explorer and firefox can pull anything up. On bottom right it says local area connection is connected but another one says local are connection4 network cable unplugged. all cables are fine and network adapter says its working properly
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Jan 29, 2013
I will like to know that i have 3 computer in a router (tplink broadband router n-series) network which has internet access but i don't want to access internet in other 2 computer how can i do that?
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Sep 23, 2011
I have a wireless OS X 10.7.1 Mac a Windows 7 laptop, also wireless and one Windows 7 desktop, also wireless but close enough to my wireless modem that it can be hard lined in. If I use the "bridging" option in the modem settings, which I assume requires I enter the Mac address all devices:1. do I need to include my network printer?2. can I still access the internet from all computers?3. if I can access the internet, do I need to do so with everything going thru one computer or can they all connect independently?
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Nov 23, 2012
How to block internet access some of the computers in a network
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Feb 13, 2011
I've been using "Linksys by Cisco Wireless-N Home ADSL2+ Modem Router WAG120N". I can restrict internet access to only 8 computers using their Mac adresses but there are no ore entry fields for Mac adress than 8. What shall I do when I need to block internet access to more than 8 computers say 20 computers on wired LAN? I don't like the option blocking the internet access via IP address. I found they are not that effective as the option Mac adress
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Feb 17, 2011
I have a Verison Mifi hot spot it runs two computers, I would like to know if there is some way that I can limit what is coming in on the hot spot
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Dec 6, 2011
Is there anyway that I can access Remote access my computers via the internet browser.
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Jan 8, 2012
I'm a college student working on a lab involving a Cisco PIX 501 Firewall.
My project involves 1 computer and a firewall. My goal is to use the firewall to allow access to the internet for that computer which uses a static IP 192.168.1.5 and ONLY for that IP address. The firewall is connected to the internet.
I have the computer hooked up to the firewall with the serial and using hyper terminal to enter commands. I think I need to use access lists in order to deny traffic on those ports for those particular hosts. I can't figure out exactly how I need to set it up.
What I need to do is permit internet access for 192.168.1.5 alone. Any other IP should not be able to access the internet.
I tried:
access-list 1 permit tcp host 192.168.1.5 any eq 80
access-group 1 in interface inside
I cannot access the internet using the computer with 192.168.1.5. The goal is to be able to access with that IP and no other.
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Dec 12, 2012
I have a Netgear N600 connected to a modem. I want to connect a switch to the Netgear N600, my question is, will multiple computers connected to the SWITCH have access to the internet?
Router : Netgear N600 [URL]
Switch: Rosewill RC-405X 10/100Mbps Switch [URL]
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May 8, 2011
My Dlink DIR-615 had worked flawlessly for almost 7 months now.But since last week it started showing problems.All the computers connected to LAN thru the switch could not access the Internet but the Server(192.168.0.100) which is connected to the DIR-615 could connect to the internet.the above screenshot was captured thru a laptop running Win7 Ultimate connected to the DIR-615 thru WiFi-n.Even after repeated Reloads the same error cropped up in the browsers in the computers connected thru the switch.The computers connected to the switch could access the Internet after I restarted the router.
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Dec 22, 2010
We configured 1941 k9 router for inernet purpose
ip name-server 218.248.255.146ip name-server 218.248.255.212multilink bundle-name authenticated!!!license udi pid CISCO1941/K9 sn FHK144773MG!!interface GigabitEthernet0/0 ip address x.x.x.x 255.255.255.248 ip nat outside ip virtual-
[Code]....
when i configured access-list 2 permit any . Internet working on local systems but we are not able to connect telnet.
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Apr 2, 2012
the site has a private wireless network for which I pay a yearly access fee. This gives me a code I can use to gain access each time I connect. We used to be able to have all our family's laptops, etc., connected at the same time using this code, but the site has recently changed the configuration so that we can't do this. Is there any way we can share the connection made by one computer so that we can all access the Internet at the same time? The site is in a remote location that gets poor mobile data coverage and landlines are not an option. The yearly fee is already high, so I can't afford to pay for multiple subscriptions.
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Mar 12, 2012
I am having an issue accessing the internet from a PC on the LAN. I have configured the PC with the gateway of the router infront of the ISP to test. I can ping from the router to google or any other internet IP. From the PC I can ping to the GIG0/1 (Inside LAN IP) and the GIG0/0 (Outside WAN IP going to ISP) but I can't ping the Next Hop IP of the ISP or anything past that. If I do a trace route from the PC to the google IP address it hits the GIG0/1 Inside LAN IP Address but fails from there. Here is a cut down snap shot of the router configure
[code]....
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Jun 21, 2011
I have few computers behind the wireless router. All the computers have static private addresses 198.168.1.xxx. The issue is that when I try to access any computer e.g to use FTP. From outside since I can only use the main WAN IP address when I use FTP I can only connect to one computer basically the one running FTP service on port 21. I can access the wireless router and if necessary can do the port assignments. My question is that if multiple computers are running FTP services behind the router how can I connect to each one of them.
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Dec 16, 2012
For everybody else in the house the internet works fine on their devices, however, on my laptop and ipod it will often not allow me to connect for ages, but then finally connecting (without me changing anything)
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Feb 25, 2011
I have 2 Windows 7 desktops that are both connected to seperate vonage boxes and those vonage boxes are connected to my D-Link DIR-655 router. That D-Link router is getting its connection from a Comcast router. I am looking to get one of the desktops to share a printer from the other one which has it hard wired via USB cable. When I first set this up I did not have the vonage boxes and the desktops were connected right into the router and everything worked fine. Now that the vonage boxes are in place it is a mess. I can get internet fine on both machines, but no file/printer sharing. I have followed all the steps to setup the correct workgroup and file and printer sharing options on both windows 7 machines but they cannot see each other at all. My feeling is that now that the vonage boxes are there that instead of the desktops looking at the D-Link router for its sharing option they are looking at the vonage boxes and that is why they cant be seen. Does this make sense? Is there a firewall on the vonage boxes stopping these two desktops from seeing each other? Do I have to change something on the D-Link router options for it to give access to the vonage boxes for these 2 machines to see each other for printer/file sharing?
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Nov 2, 2011
Recently installed an E4200 router to an MacPro following the setup as directed by Cisco Connection (connect Ethernet to router and then computer to router.) The wireless and the hard-wire connectivity works fine with accessing the internet. However, we have lost the ability to connect to other computers on our LAN via the Shared folder connection. This is usually accessed via the Sidebar (see image)
However with the E4200 in the mix, all we see is the router per its "given name" (what it was named on installation). I have tried to follow the advice mentioned in other threads, such as "Can't access network shares with E3000" and nothing worked-- and those threads seemed to apply to Windows and PCs anyway.
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Oct 7, 2012
I have recently moved in a new apartment. At the building there is something like a centralized internet. There is a huge machine which is connected to every apartment of building via a cable modem(Netsys nh-300sp). Here is an image of system. And when I first came to apartment they gave me a username and password which I made login when i firstly opened a page on safari. When I plug in an ethernet cable to my macbook-air it connects and everything s good for a moment then it starts to kick me out randomly and continuously. When I look to Network Diagnostics: ISP is red, internet and network are yellow.I tried also using a manual DHPC address, but then ISP is green but Internet and server are red or yellow. I cant even reach to modems admin panel, maybe because of the system of building.
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Feb 1, 2013
I have a Linksys WRT54GS router that I have installed dd-wrt on.My household is overloaded with wireless devices, and living in a home of 6, speeds for everyone seem to slow down drastically later at night when everyone is simultaneously connected and streaming media -- whether it be Netflix, YouTube, etc.. My typical speed wired to the router with no other connections is around 25 mb/s down and 1-2 mb/s up.Obviously, it's going to slow to a crawl when we have an iPad, 3 iPod touches, an iPhone, a Wii (playing Netflix) and 4 PCs all connected simultaneously.What I need to do is give my personal computer priority and throttle all other devices. So that I myself will have decent speeds while hampering all of the other household connections. I rely on those speeds for my job and that should have priority over my brother watching music videos on YouTube.
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Jun 18, 2008
I have a linksys wrvs4400n router on which:The wireless computers are connected to the home network (v lan 1)Port 1 is connected to the home network (v lan 1)Port 2 is connected to the office network (v lan 2)And the printers are connected to port 3.Now I'd like to setup the router in such a way that all computers have access to the printers (port 3), but I don't know what v lan settings I have to use on port 3, or if it is even possible...
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Feb 26, 2013
we hadn't have the WEP key on our Linksys wireless router, so we decided, about a month ago, that it was a good idea to lock our wireless connection. So we did. For a couple of weeks, everything worked just fine.But then we bought a new printer, which happened to be a wireless network printer, and in the process of installing it, we mistook the reset button (I think) on the router for some other button and ended up resetting the router. When we did that, we undid WEP key, thereby unlocking the router. Then, we locked the router again, at which point one of our computers--which happens to be mine--ended up not working. All other computers and phones and iPads work just fine, but this one laptop of mine just doesn't work (with respect to wireless internet connections, of course).
- pressing the reset button on the router again. It kind of works. The internet works for about five or ten minutes (which is unbearably annoying because I have to reconnect it every five minutes), but my computer somehow disconnects itself from the internet connection. Also, although the internet technically "works," the wireless network icon thing on the bottom right of the screen has an "X" on it, which I thought meant the internet is not working, but it apparently doesn't, because my internet is working now. And, if I click the icon, it says that I'm not connected, but, again, the internet works. (for about 5~10 minutes, if I unlock the router)
- changing the internet protocol information (I don't think it does anything, but.)
- changing the wireless internet connection property to WPA, WPA-PSK... everything.
*All computers in the house have wireless internet connections but mine.
*When I reset the router, the internet works, although the computer says it isn't connected, and it disconnects itself every 5 or 10 minutes.
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Jul 14, 2011
We have three laptops in our house. We are set up with internet that gives me a direct connect and up to eight wireless devices. My son and daughter-in-law use the wireless and I use the direct connect. M son added a router (which I have no idea what that does) and set up networking on his computer (which I also have no idea what that does). When I am the only one on the computer, it flys. When either of them get on thiers too, it slowes a little. When both of them get on, I might as well get off because it can take up to three and a half minutes to load a page.
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Jan 9, 2013
My ISP provides static ip based internet connection. I have setup my D-link DWR-113 router to access internet through it. I have also turned on DHCP in the router. But when I try to access internet using both of my computers simultaneously it doesn't work - none of the computers is able to load a webpage. And when I leave one computer I am able to surf without any problem.
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Aug 1, 2012
how do i share modem internet with two computers without using a router or switch
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Jul 24, 2011
The connection of the computer before is activating.. after how many days of using,it losses the internet connection.. what is the possible reason for this?
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Apr 13, 2011
I have a dell latitude d600 laptop running on windows xp home edition. We are using a small office network with y computers connect the laptop being the third and I am connected via wireless connection. I can connect to our network printer and the other 3 computers without a problem but I cannot go ontothe internet. I have an ip address 10.0:0:9 which is within our LAN range and my subnet mask is 255.255.255.0. I cannot also setup outlook and if I ping sites like google .com I get the reply 'could not find host'
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