Cisco VPN :: 5510 Unable To Resolve Server Address

Mar 27, 2011

I am using the Cisco VPN Client - and am having an issue connecting to my ASA 5510 via VPN.  This issue is happening on 1 of our laptops.  All other laptops connect just fine.  So the problem is not in the ASA.  I have double checked the client setup and config and it too is correct.  The interesting thing is, we are connecting to an IP Address and not a host name.

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Error 105 - Unable To Resolve Server DNS Address?

Jan 15, 2012

I have been trying to connect to the Internet via a wireless connection but keep receiving the above error. None of the Windows solutions resolve the problem. On Google Chrome I see a screen saying 'This web page is not available', and receive 'Error 105: Unable to resolve the server's DNS address'. I cannot access Internet Explorer either.The strange this is that this problem only seems to occur with some wireless networks, as I can connect fine at home. In certain places, however, I am told that I am connected but that accss is 'Local Only', and I cannot open any browsers. I need the problem resolved as soon as possible as I cannot access the internet where I need it most.

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Error 105 - Unable To Resolve The Server's DNS Address

Feb 8, 2013

Error 105 (net::ERR_NAME_NOT_RESOLVED): Unable to resolve the server's DNS address.

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Netgear WGR614 V9 Router - Unable To Resolve Server DNS Address / Error 105?

Dec 27, 2011

I'm connected through the router, a few times a day I cannot open web pages, getting error: Error 105 (net::ERR_NAME_NOT_RESOLVED): Unable to resolve the server's DNS address.Skype continues to work. Here are the results of pinging:


Microsoft Windows [Version 6.1.7600]
Copyright (c) 2009 Microsoft Corporation. All rights reserved.
C:UsersSri Guru>ipconfig /all[code]....

One technician said that this is the providers problem, but I don't think so. When I restart the modem everything works.I have a Netgear WGR614 v9 router.I use ESET 5 security. Btw, connection drops on all computers connected through the router, so it's not my firewall.

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Unable To Resolve Server's DNS Error

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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Host Names Do Not Resolve With Right IP Address

Nov 30, 2011

where the host names do not properly resolve with the right ip address.Example, I ping a host name, it gives me an IP, but when I VNC into the workstation, it is a totally different host.

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D-Link DIR-655 :: Doesn't Resolve Own Fixed IP Address

Aug 13, 2012

I have a fixed external ip address.I have port forwarding setup for accessing a NAS inside my LAN, lets say port 12345.Now when I use my laptop outside my own LAN, e.g. resolves nicely to my NAS. But when I use the same inside my LAN, it does not resolve. Instead, it gives me a 'server takes too long to answer' error

I have also setup a virtual host to an ip cam inside my network. That one resolves just fine. I tried enabling remote management on the DIR-655 and also that works fine using I replace the external ip address with the internal ip address of my NAS, thus bypassing port forwarding, it obviously also works ok.

Why the forwarded ports are not accessible when I use my own external fixed IP address? Does the DIR-655 treat it different than other external IP addresses?

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Unable To Resolve Target System Name

Feb 8, 2012

My company recently purchased a custom domain name through In Motion Hosting ( which has worked great up until today. As of this morning we are not able to view our webpage online ( or any inmotionhosting pages including our email accounts. However, we can view any other website and computers outside of our network seem to be able to view those pages without any problem. [code] As you can see it works fine with any other website such as google. My initial thought was it was being blocked by our firewall but when I log into the router I do not see any firewall settings that would create this block. I also tried resetting the router and flushing the DNS with no success.

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Cisco AAA/Identity/Nac :: ACS 5.1 AD Connection Setup DNS Failing To Resolve Address

May 9, 2010

I am trying to configure the ACS with AD in the identity store but am running into the following issue.I enter the AD Domain Name and username and password and hit the 'Test Connection' button and receive a DNS error stating that it 'Cannot resolve network address'.I have logged into the CLI and test to the domain name from there and it works fine.

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Unable To Resolve Webserver Locally By Domain Name?

Apr 12, 2012

I am running a webserver locally and I am unable to resolve it by domain name (e.g. when I am inside my network. However, I am able to hit it internally (e.g. just fine. When I try to access from inside my network it comes up with my Actiontec router's admin page on is my configuration:Actiontec FIOS router (connected to internet)DHCP disabled Netgear Router is in the DMZHas cable running from Actiontec's LAN port to Netgear's WAN port[CODE]

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Cisco Firewall :: ASA 5510 Server's NAT Address Not Changing

Nov 16, 2011

I added a new server and created a new static NAT assignment on the ASA 5510 to the server's IP.  When I browse to the web to check what public IP it's reporting, it shows the wrong IP.  I disabled the network interface on the server, ran "clear xslate", reenabled the network interface, ran "sho xlate" and while the correct translation was in the table, the server still reported the wrong IP address.I even ran a packet trace and it showed the IP address being correctly translated to the proper public IP, but when I browse to the web I get the same erroneous public IP. [code]

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Cisco Switching/Routing :: 1721 With ADSL - Clients Unable To Resolve DNS

Jan 1, 2013

I have a Cisco 1721 router with an ADSL wic. I have followed guides on the Cisco website so that I can connect the router to my home adsl connection. The router connects to my broadband provider and sucesfully obtains an IP address along with Dynamically assigned DNS servers. I am able to ping from the router but not from clients attached via DHCP.
I have noticed that if I ping the IP address of from a client it resolves but it will not resolve the name. This would lead me to believe that the problem lies with DNS resolution/forwarding but I do not know how to investigate further.

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Cisco Firewall :: ASA 5520 - Unable To Resolve External Hostname Internally

Jul 1, 2012

I am working on adding a mapping to our external address for our mail server - let's call it
I would like to be able to access internally for our user's smartphones - if they access our company WiFi they are not able to get mail using the as the server name in their phone setups.  However, once they leave the office and use any other WiFi it works fine. Also, I am unable to ping that address from any internal device.  I believe also this is the reason Exchange accounts do not work on our site to site VPN connections.
I have a ASA 5520 and work primarily in the ASDM 6.4 to do configurations in the main office and have 5510 in our site to site connections.

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Cisco Firewall :: Allow Dmz Zone Server To Resolve Only Dns Query Through Nslookup On ASA 5540

May 2, 2012

How I can allow dmz zone server to resolve only dns query through nslookup on ASA 5540? What is the configuration required on ASA 5540 ?

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Cannot Renew IP Address - Unable To Contact DHCP Server

Mar 31, 2013

I randomly lost Internet connection, and since have not been able to Renew an IP address! Other people in my household can connect just fine. I've tried numerous things to get my internet back, but continue to be unsuccessful in doing so.

Microsoft Windows XP [Version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.
C:Documents and SettingsMike>ipconfig /all
Windows IP Configuration
Host Name . . . . . . . . . . . . : miker
Primary Dns Suffix . . . . . . . :


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Home Network :: Remote Ip Address Is Updating DNS Server But Unable To Ping It?

Apr 20, 2011

i have a new smc router and my local ip address and remote ip addresses are very similar. The remote ip address is updating my dns server but i am unable to ping it. Its something like ?

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Cisco Firewall :: ASA 5510 / Add A Mail Server In The LAN And A Webmail Using Port 3000 On The Server?

Jul 24, 2011

I'am using ASA 5510 and I try to understand how PAT is working.I want to add a Mail Server in the LAN and a webmail using port 3000 on the server. ( webmail must be reachable from the WAN)This is my Configuration :actually LAN users access internet using NAT with one global IP ( 194.x.x.69) which is the ASA WAN interface.

WAN ----- ISP Router ----------     FW     ---------- LAN -------- Mail Server + Webmail
|             (25) | (3000)
I need to forward port 3000 and port 25 from outside to inside.For example, from the WAN : [URL] must be redirect toward . What is the Correct Configuration ? And what about the Inside/Outside Traffic,Is there any configuration to add ?

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Linksys Wireless Router :: EA6500 Unable To Select Folder Access / FTP Server / Media Server

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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Cisco Firewall :: 5505 DNS Does Not Resolve Inside DMZ

May 14, 2012

I have a 5505 that currently has inside/outside interfaces and everything is working just fine. I am trying to create a DMZ that will essentially be just for vendors/guests. the DMZ will have full access to the outside (Internet) but no access to the inside. I am using the FW for DHCP, and and for DNS. I currently have 1 laptop in the DMZ vlan, and it is getting a correct IP, and it is showing and in ipconfig. I can ping/tracert 4.2. 2.2/ url... resolved to on a laptop connected to the inside vlan), but I cannot ping nor browse to url.... [code]

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Cisco :: LMS 4.2.2 - Fault Manager Does Not Resolve Hostname

Dec 13, 2012

This is Cisco Prime LMS 4.2.2 on Windows 2008 R2
As far as I understand it Fault Manager need to be able to do reverse lookup for ip adresses to show the correct name in the "device name" column. I have double and tripple checked and all devices that only is shown as an ip address do have a reverse in the dns used by the LMS server. The device is correctly registered and inventory have been run. If I hold the mouse pointer over the crosshair on the row of the offending device all info is shown including correct device name and fqdn.
The server is upgraded from 4.2.1 to 4.2.2 and we have the same problem before the upgrade.

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Cisco VPN :: 5520 - Cannot Resolve DNS In Windows 7 X86 SP1 With

Jun 23, 2011

I am unfortately the only IT staff now for 100 - 150 users in my organization besides a consultant who doesn't have an answer for this issue even though he sold us the hardware and environment. While I realize that this version of the Cisco VPN doesn't support Windows 7, we do have some Windows 7 PC's that have the software and work perfectly fine upon install. In this case, I am at a remote location with both a Windows XP SP3 and Windows 7 SP1 computer. Both have the same Cisco client installed and connect to our ASA5520. I cannot get DNS resolution out of this computer to any remote network resources or other domains such as including localhost. Adding the entries manually in the hosts file does nothing and I even tried removing the VPN client, the network connections and components and even a manual winsock reset. I cannot resolve internet DNS but can ping all internal IP addresses. The Windows XP computer across from me has no issues. I am not going to update any VPN clients as we still don't have computers who are functional so I need to spend money where it counts before I upgrade computers and I cannot perform a downgrade on this model because the previous person who bought it didn't bother to check Windows XP compatibility before they installed them in 10+ communities.
Here's my IP config - FYI all works well when not connected to the VPN for general web domains.
C:UsersAdministrator>ipconfig /all
Windows IP Configuration
Host Name . . . . . . . . . . . . : GHN-Green-S01   Primary Dns Suffix  . . . . . . . :


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Cisco WAN :: Asa 5510 With Private Ip Address On Wan

Feb 8, 2012

i recently get high speed link for my compagny to replace the old frame realy.the internet service provider gave me a non routable range to set on my asa  like this : [code]then the ISP tell my public ip wan range was x4.23.209.166/29.i made this kind of configuration works when i put a cisco routeur in befor the cisco asa like this: [code] it is possible to make this works on cisco asa 5510 without putting a router in front ?if it works problem can happen to establishing vpn from the outside interface having a private ip ?

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Cisco VPN :: ASA 5510 - NAT Destination Address Through VPN?

Feb 25, 2012

I am trying to perform destination NAT through a VPN scenario traffic coming from needs to connect to address from the source device traffic will have a source IP address of destination will be traffic will hit the asa 5510 and the traffic source will stay as but the destination needs to change to
I have tried the different types of NAT but been unsucessful with all. My VPN tunnel will connect if the destination address does not change (NAT Exemption used). This scenario is even possible on Cisco devices. I have seen discussion that NAT the source address but not the destination address.
example config
access-list FROM_INTERNET extended permit esp any any
access-list FROM_INTERNET extended permit ah any any
access-list FROM_INTERNET extended permit gre any any
 access-list FROM_INSIDE extended permit ip host host
access-list VPN-TUNNEL extended permit ip host host
**I have left other config statements off as the NAT config used previous has not worked and the VPN tunnel does build when using NAT exempt.

**All ACL have been applied in the inbound direction on the respective interfaces. Two static routes have been applied to the FW directing inside traffic inbound and all unknown traffic outbound. I have not defined a specific static roule for the VPN traffic allowing the default static to perform that function.

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Cisco Firewall :: How To Configure 5520 To Resolve Names In ASA

Feb 4, 2013

How to configure ASA 5520 to resolve names in ASA's. We are currently using ASDM to configure network objects with the hostnames in the internet and then specifying the IP address . But this is done manually. Is there a different way of setting it up on ASA. Also when getting reports from ASA, we see the IP's but is there a way that we could add an identity to the IP's (reverse lookup)

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Cisco Routers :: RV120W Cannot Resolve Hostname Of Most Of Devices

Jul 21, 2011

I am having issue with my network as my router won't resolve most of the hostname of the network, I have 30 devices on my network, and only 4 names are displayed on the available local host. It makes it very difficult to identify the devices on the network.

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Cisco WAN :: 1841 Router Can't Resolve DNS After Enable IOS Firewall

May 9, 2013

my 1841 router can't resolve dns after enable ios firewall, I try to ping from router's console fail, but dns resolution is fine from lan side.
my partial config---------------------------------
ip name-server


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D-Link DIR-655 :: Local Names Don't Resolve On New Cascaded

Jul 15, 2011

1. I have a DSL modem + wireless + router
2. I have a Vonage phone that taps into one of the LAN ports
3. I have DIR 655 router that taps into one of the LAN ports
4. I have NAS that taps into one of the DIR 655 LAN ports
5. I have Printer that taps into one of the DIR 655 LAN ports
6. I have a BD Player that connects to DIR 655 through wireless.

All my components that are tied to DIR-655 resolve through IP address. I would like to have the resolution through host name as it works with my first router (DSL Modem / Router). Identifying components with IP address is not only inconvinient in terms of reading / recognizing my components but ther could be other issues. I am not very techie on the networking side but I do have some basic knowledge.

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Belkin F7D3302 - Resolve Local Domain Name

May 4, 2013

My Belkin router has an option to set a local domain name, which, I suspect, allows me to address hosts within my own network using this domain. By default, this is set to be "Belkin". Is it possible to call hosts within my network like this, e.g. ping foobar.Belkin instead of ping The thing is, my routers internal page shows all set host names (so dh client seems to work) and the router itself is reachable as router.Belkin, but no other hosts are. My problem here is that the router knows each hosts name, but the hosts don't know each others name. How can I fix that?

Note: Nmap showed that port udp/53 for DNS is open on my router, but I can't find any way to configure it on the Web-interface.

Add:// It's a "Belkin F7D3302 v1"

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Cisco VPN :: 5510 External IP Address Not Controlled

Aug 19, 2012

We have a strange issue for one of our customers that recently migrated to our internet service.They are trying to vpn to an external ip address not controlled by ourselves. The issue is only on one subnet and isolated to Mac’s, PCs in the same subnet also work fine. They were able to vpn from the MACs before they migrated to our INET solution. They previously used a checkpoint FW for their outside NAT and firewall and now are using a failover pair of asa 5510s. I have packet traced out the firewall and there should be nothing blocked. UDP ports 500 and 4500 are open to the destination ips from the correct subnets. All other subnets with Windows PCs can vpn out to external ip without issue. The users in that subnet with the MACs can also browse internet fine so the routing and nat overloading is also ok
When they try to initiate a connection from the macs i can see the connection/xlate coming in from a source port of  udp 4500/500 and also a destination of udp 4500/500 instead of a random source port. Just this evening we managed to get one device connected but no others. Would the fact that the source port is claiming 500 and 4500 stop the other macs using the same source ports at the same time to connect out? They are using the onboard mac vpn client, he can’t get the Cisco one working at the minute. [code]

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Cisco VPN :: 5510 Summary Address In ACL Rather Than Having Five Lines

Jan 4, 2012

I have setup a site to site VPN with an ASA 5510 (8.4) and a Cisco 2811. The tunnel is working fine, however both sites have 5 different contiguous networks. The crypto ACL between sites states only one subnet.Is it possible to state a summary address in an ACL rather than having five lines for the ACL?The tunnel works when the router uses an ACL of, however if a summary address of all the subnets on the inside network of the ASA are stated in an ACL - - then the tunnel does not come up.Is it possible to state a summary address on a crypto ACL on the ASA?

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Cisco Firewall :: ASA 5510 - Single Address NAT From VPN

Jan 17, 2012

We have an ASA5510 running version 8.25. This is in our central office in London. The London network has an ip address range of Connected to this via a site-to-site VPN we have a satellite office that has an IP address range of
We have now connected to our parent company via another site-to-site VPN connected to the same ASA5510. Their network has an internal range of It was our parent company that issued us with our range of addresses a long while ago so that it all fits in with the rest of the company.
We have resources (web servers) on their network that we use which work just as it all should. We now want to allow our satellite office to view those same web servers. The problem is that only 10.110 addresses can flow to our parent company.
I have configured the firewall at our central office and our satellite office to route across to our parent company via our network network and the packets are flowing just fine except that obviously once they reach our firewall they cannot go to our parent company because the 172.16.148 range cannot be routed there.
My idea is to NAT traffic from our satellite office to one of our local addresses before it goes over to our parent company network.
For example: If someone in our satellite office with an IP address of attempts to request a resource from then the request would go via the VPN to our firewall and then get NATed to before being passed on to our parent company network.
My question is what would the NAT configuration be to achieve this. I just cannot work out what type of NAT I would need or how to construct the command. It's probably PAT as it will be multiple addresses to a single address. Essentialy, all traffic from destined for should get NATed at our firewall to before being passed on.
Just to add, we already have this working from our Cisco 3000 Concentrator which is now going to be phased out hence trying to get this to work on our ASA. The satellite office has now been moved to the ASA and as of today our parent company has been moved to the ASA.

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Cisco Firewall :: How To Filter By MAC Address With ASA 5510

Mar 3, 2013

I am using an ASA 5510 firewall in routed mode.How can I filter incoming traffic by mac address on the AS 5510 ? I have already setup a static access rule for rdp users on the outside to access a terminal server on the inside.Now, i would like to further limit access from specific computers only.

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Hosting Website On Network - Doesn't Resolve Locally?

Dec 12, 2011

I am setting up a webserver to host our website on our local network. When I'm browsing from an external network, I can pull our website and a sub domain However, when I'm browsing from our internal network, I cannot pull up I am not sure if this is due to propigation issues or what.When I do nslookup from external, it shows my network's main IP address. When I do it from local, it can't find an address and says non-existent domain.Should I have any problems connecting to my website if it is using my external IP address? Will this be a loopback problem? If so, how can I resolve this?

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