Hostname Entry Against Public IP?
Sep 5, 2012
We have one business application, accessed across GCC region by having a single entry with individual computer hosts file, ie123.123.155.116 myappl.mycompany.com and other than Bahrain, all countries are able to successfully resolve the hostname (application only works against hostname (Oracle EBS)) against this entry with the hosts file. Now, prior contacting the ISP in Bahrain (where internet is regulated due to the current political situations) we need to know whether anything could be done from our end to resolve this issue.
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Apr 2, 2013
One of our vendors requires using a public ip address to setup a site-to-site IPSEC vpn. We only have one public ip address and that will be used for the vpn endpoint and for internet access for the local network. I've setup policy NAT from our local network to the outside interface. I'm also using the outside ip address for the crypto map. The tunnel setups successfully and the Tx count increases anytime I try to ping the remote network, but the ping fails and the Rx count does not increase. According to our vendor, we should be able to ping the remote network and connect using port 443. When trying to connect using port 443, I see a SYN timeout in the logs. I'm not sure if the problem is on their end and they're rejecting our traffic, or if something is misconfigured on our end. I'd like to make sure that I have everything configured correctly before I go and point fingers at them.
Local Network - 10.10.9.0/24
Remote Network - 20.20.41.0/24
Remote Peer - 20.20.60.193
.ASA Version 8.2(5)
!
hostname ciscoasa
[code]....
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Jun 27, 2012
I have Windows 7 x64 on my desktop, laptop, and HTPC. The past few months, everything worked fine. Today, I can ping my IP address but I cannot ping the host name on all 3.They also do not show anything in the network window, just the computer that I'm on.
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Jul 10, 2011
i have an ASA 5520 8.4(1) setup as follows
public wan
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ASA-- public dmz
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private lan
i need to allow https traffic to a server in the DMZ that will have a routable IP address will just an ACL suffice ?which interface do i apply it to ? wan or dmz ?i dont need a NAT since the DMZ is a routable space?
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May 2, 2012
how to get the Computer name of any computer on the Network by using its MAC Address. I am really in need of it
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Dec 8, 2012
I have a small workgroup at home of about 4 or 5 computers. All the PC's, notebooks are running W7. I have one PC that I use as my "always on PC", with all my media and resources I use on it. The NetBIOS or computer name assigned to it is mediapc with a static IP of 192.168.254.150. All my other desktop PC's, excluding the notebooks, have a static IP also.The problem is more annoying then anything, and thus I only work on it intermittently. Today I decided to post after wasting much of another day attempting to resolve the issue.The problem is accessing my mediapc from any of my other computers while using the computer name, "mediapc". If I use the static IP assigned above, there is no problems. Everything works, RDP, Dameware, Telnet, SSH, Ping,Tracert, etc. If I use the computer name "mediapc" then it fails with an unreachable host error or similar. The reason it fails is because somewhere in my network or in the mediapc itself, it wants to resolve the "mediapc" name to an unknown IP of 192.168.254.47.
Now with this said, I can still share files and access the mediapc using the name in a UNC syntax, like //mediapc/data works fine or directly clicking on the mediapc share under Network works also. If I Ping mediapc from any other PC than itself, it fails with the 254.47 IP. If I try to use any remote connection software and use the name mediapc, it fails to connect.This is what I know and have tested:
1. Adding a host entry to all the client computers works but does not fix the root of the problem.
2. nslookup mediapc reports the wrong IP of 254.47
3. Remote connections as I mentioned above fail because the name is resolving to an invalid IP.
4. Pinging mediapc from itself, displays the correct IP of 254.150, although I have to use the -4 parameter.
5. Arp -a on all PCs report correct IP of 254.150 with the correct MAC address. (There is no 254.47 listed)
6. NBTstat -a mediapc reports correctly and shows the correct MAC address.
7. Network shares work correctly from and to the mediapc without issue. No access problems.
8. I have deleted all arp entries and flushed the dns with no change.
9. MS mentions to change order of the Bindings of the adapters, yet I only have one Local Area Connection.
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May 15, 2011
How is a computers hostname translated into an IP-address?Eg. when i enter "\server1" into the "run"-menu i get access to my server at IP-adress 192.168.1.2, but how does my computer know what IP-address is it?
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Dec 12, 2011
I manage the network of a small (120 users) network spread out over 5 sites within a 10 mile radius (for normal ops- extended ops can expand to include other cities).I think I'd call that a Campus LAN, perhaps it's just a really small MAN (for normal ops)...I am starting my CCENT/CCNA track so this may be blazingly obvious to some of you- but I'm sure to learn something either way...Every now and again we have to go find "hostname "X"" for an update that won't roll out by way of our (Server Sr SysAdmin's) tools, so we actually have to put hands on it. Unfortunately the prior admins didn't document the inventory to such a level that we know "laptop_015" is in the building down by the college.
I DO have documentation on my equipment (I'm the Network Sr SysAdmin) that I have rolled together over the last 9 months being here...I have a Cisco 5520 ASA, and use ASDM to manage it. What would be extremely handy would be the ability to put a query in the system to report back what switch a given hostname is plugged intoBetter yet, if it could tell me switch and switchport.I imagine this would be simple if I had the MAC address- there's got to be a way to grep the switches for a given MAC- but not sure if it'll work in a similar fashion for ARP lookups.
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Aug 31, 2012
I am having trouble with getting a copier that I have networked to stay registered in the system. When connecting all the equipment back for the new year I was having trouble getting this one specific copier back online properly. I used to have it assigned with a static IP because the person that was here before me had all the computers map the printer using the IP instead of Hostname but that was causing IP conflicts so I removed it and mapped the printer through Hostname which is made "MPF-TOSHRM328"So now for the actual problem, after the copier got the new dynamic IP of 10.8.214.151 i thought it would be fine and everything would click in because it was mapped to the host name and not the IP. But when I do a tracert on the hostname it still shows up with the old IP. and now that the old ip has been reassigned it actually points to a physical machine now. Weird. All attempts to flush the DNS have not resolved the issue. I even tried going in and deleting the entries in manually. No luck. As a point of reference here is the result from the tracert.Tracing route to MFP-TOSHRM328.78B450.nycboe.org [10.8.214.126] over a maximum of 30 hops: 1 <1 ms <1 ms <1 ms SLS330W09 [10.8.214.126]Trace complete. I should also mention that this server is only here in the sense that it is the DC for the computers on this floor. There is a whole other system that assigns the IP's and handles the DNS. I do not have access to it, it is run by the main network people at the central offices.
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May 15, 2012
I want to know IP address ,If I know hostname {OR} I need to know hostname,If I know IP address.
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Aug 6, 2012
is there any way to apply hostname or object network in the syntax? The command gives the option to use hostname or A.B.C.D but doesn't accept the hostname PIX1(config)# filter url except 0.0.0.0 0.0.0.0 ?configure mode commands/options: Hostname or A.B.C.D The address of foreign/external host which is destination for connections requiring filtering Can an FQDN be used as a foreign/external host?
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Feb 10, 2013
Our Cisco team does inventory pulls with CNC and i was informed that this uses the hostname field currently the report pulls the IPadress, the discoveries that run on the LMS populates displayname field and puts the IP address in the hostname field. is there anyway to update this via query or process, i have too many devices to manually update this.
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Jun 21, 2012
I'm trying to use MRTG and SNMP on a Windows Serveur 2008R2.I want to manage my Switch with mrtg, but it don't show me which computers or server are connected to the Switch's ports.All I have, in the .cfg file is the interface name ( like S0/0 ), which are useless for me, I would like to get IP adresses or hostname but mrtg doesn't seems to do it.Any of you know if Mrtg can do that ? or maybe there are some others ways to do that ?
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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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Jun 14, 2012
i have a problem that i see the devices by ip not hostname in devices report and topology and i checked in device discovery to appear by hostname
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Nov 28, 2012
I have a new 1262AP configure hostname prompt, “APacf2.21c6.820e# lwapp ap hostname ccsaa ERROR!!! Command is disabled.”does not change the hostname of the AP to the WLC, this is why?
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Aug 6, 2012
we use LMS 4.2.1 and we noticed a strange behaviour when starting a discovery. From aprox. 160 devices some devices are displayed as IP Address instead of hostname. Every device is DNS resolvable and has a value for "hostname". I´ve tried every possible option in the global discovery settings but some devices have the IP instead of their hostname. how to fix this?
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Mar 13, 2012
My router/modem is a DSL-2740BI created a hostname [URL] At my service provider I was able to create a DNS setting where I specified my routers IP address.In my router I think I created a port forward (TCP port 8080 on both external and internal) with the ip address of a small "web server" (an Arduino module for home automation).When I enter my hostname I get to see my router config page instead of my "Arduino page".
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Nov 4, 2011
i successfully configured my befsr81 router hardware version 3.1 with a dyndns hostname account. how often is it supposed to update? it doesnt seem to update till i login to the router through my browser. where is successfully updates. is there a way to choose how often it updates?
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May 24, 2011
I am working with an ASA5505. I have configured a Remote Access IPsec Connection profile. This profile is configured to give clients a virtual ip address via DHCP as shown in this configuration example: url...When the DHCP request is sent from the ASA to the DHCP server, the hostname in the request is set to the name of the IPsec connection profile and a number. Is it possible to have the hostname set to the host name of the client that initiated the connection?Does the ASA support receiving a hostname as part of a IKE Mode Config Request?
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Aug 9, 2011
we are running LMS 4.0 on Windows Server 2008, and just changed the hostname of the server, as the former on reflected it being a test system. However, after rebooting the server (as required by windows), the LMS application did not launch.After rolling the windows server back to the old hostname, the LMS started working again.Why is this? Isnt it possible to change the server hostname after the LMS has been set up for the first time?
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Jul 4, 2012
I am unable to login to switch c3560 through Hostname but able to login through IP address. when i am putting the command : login authentication telnetpwd
getting the below message:
AAA: Warning authentication list "telnetpwd" is not defined for LOGIN.
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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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Mar 1, 2012
Is it possible on an ASA 5500 device to connect an IPSEC tunnel via hostname instead of the IP address? I have a site without a static IP address that is currently connected via Easy VPN but I want to change one of the sites to a regular IPSEC site to site as one side, the one with the dynamic IP, is being changed to SonicWALL. I will have DDNS setup on the site with the SonicWALL so I want to know if I can point the ASA device to the hostname instead of the IP.
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Feb 22, 2013
I have a big problem with my Cisco EA6500 router. I have a domain that is pointing to my public IP address of the home network. I have various computers and applications that listen on different ports for various reasons on this network. Everything worked fine until a week or so ago when I had to restart the router. The reason was that while I did a routine change (add a Mac filter for wireless) the router stopped responding. After restarting it, I could not access the home computers through the domain name (public IP) while being inside the network. If I try from outside my LAN it works fine but when trying from within the LAN the hostname and IP are not reachable. Also, everything works from inside the LAN if I'm using LAN IPs.
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Jan 7, 2013
I am able to access ASA via hostname but with IP address it does not work.Need to know what config i need to put so i am able to access it using IP by ssh and ASDM? ASA is 5520 version is 8
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Nov 8, 2011
I was trying to give the following host name to my 3925 router.Iht comes up with the following error. DRT0(config)#hostname DRT#0 % Hostname contains one or more illegal characters.% Hostname "DRT#0" is not a legal LAT node name, Using "CISCO_000000" DRT#0(config)#
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Dec 12, 2012
We have lots of new lap1041 need be set static IP Adress, hostname, Controller Adress via command line, but when use command (capwap ap hostname) to set hostname , always give us command disabled, we used command:clear capwap private-config, but it does not work, why?
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Jul 27, 2011
I have just had my broadband upgraded to FTTC which means my router has had to change. Previously I was using a Thomson TG585v7 ADSL thingy provided by my ISP. One nice thing about that router was that it would act as a local DNS and allow me to find my other machines on the network by using <hostname>.lan instead of IP addresses.
I've now switched to a Linksys WRT320N ethernet router which connects to my fibre modem, and which I've updated to the latest firmware (1.0.04). I have 2 machines on the network which I regularly want to connect to each other; one is running Windows 7 and the other is running OS X Lion.
The problem I'm having is that I'm unable to connect to my Win7 machine from the OS X machine using the Win7 machine's name. However, I'm able to ping the OS X machine from my Win7 machine using the hostname.
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Jul 1, 2012
I am working on adding a mapping to our external address for our mail server - let's call it mail.example.com
I would like to be able to access mail.example.com internally for our user's smartphones - if they access our company WiFi they are not able to get mail using the mail.example.com 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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Jul 7, 2011
I have connected an ASA 5505 to an ADSL router that is able to assign the IP address and the also the DNS servers for the ISP for the outside interface. The ASA is loaded up with IOS "asa842-k8.bin"
I am using vpnclient with a hostname as oppose to an IP address to connect to a headend remote server. If I hardcode the DNS servers IPs in the "dns server-group DefaultDNS" I am able to resolve the hostname. If I then remove the IPs from the group and rely on the dhcp to assign them, when I try to resolve the name I have an error at the console "ERROR: % Invalid Hostname"
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Apr 16, 2013
I have installed a switch (3560) that was from another site and changed all it's config and hostname etc and it is now live, however the syslog messages still see the old hostname, what could be causing this?
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Feb 24, 2011
Everytime I start one of my two Windows machines, I need to go to the control panel network adapter and enter the static IP address in the IPV4 properties. It is always blank after a shutdown.I have two machines that are networked for flight simming.One of the machines must have a static IP so I configured both static. Not sure if this has anything to do with my problem.
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