DHCP DNS

Similar Questions

• Laptops acquire wrong address DHCP, DNS and gateway wireless

  I have problems with two laptops. For some strange both acquire the bad DHCP, DNS and gateway (server) respond when I try to access the Internet via Wi - Fi. For some reason, this does not happen when I use the LAN (cable) connection.

  that is instead to fetch the address: 133.24.56.78 (no real address), the system retrieves / uses 111.22.33.44 (again, not a real address). BTW, these two systems are configured to fetch automatically get IP addresses and DHCP. I tried to fix the connection in both cases, but it did not work.

  What can I do to fix this?

  Problem solved.

  I changed the router to WEP (WPA - PSK) encryption.

• Microsoft Virtual WiFi Miniport adapt, how to disable DHCP & DNS?

  Hi all

  I use Microsoft Virtual WiFi Miniport Adapter for ICS on my laptop and the phone. But I can't find a way to disable default DHCP & DNS available with ICS.
  I will runn double server DHCP & DNS () on mine. Who will make me better manage DHCP leases and all DNS forwarings with the complete log.
  For this I need to stop the default. It is possible, Connectify did the same thing. I just find a way to do it myself.
  Any help?

  Hi, question of your Windows 7 is more complex than what is generally answered in the Microsoft Answers forums. It is better suited for the public on the TechNet site. Please post your question in the following link for assistance:

  Link to the forum:

  http://social.technet.Microsoft.com/forums/en-us/categories

• No DHCP - DNS VIRUS recovery

  I have recently got rid of a nice healthy virus on one of my Clients PC, I don't remember the name of it. But a control of Trojan horse that wouldn't let me run programs and constantly beating me at every turn... so... I ran Kaspersky Rescue disk. got rid of him and then ran AVG just after it. MISSING virus!

  now... problem. I can not receive an IP address from the DHCP server and when I have static IP, I can't have a resolution of any DNS server. no problem to ping ANY IP address even the public Ip addresses as ip of yahoo - 67.195.160.76...

  I restarted the TCP/IP with the command "netsh int ip reset resetlog.txt".

  I also rebooted Winsock with the command "netsh winsock reset."

  I also rebooted windows Firewall by following the steps on this link "http://support.microsoft.com/kb/920074/en-us" because I noticed that the firewall services are not started, and I can't start

  so I was going to use the repair on the windows XP pro CD nice feature... but... when it tries to start windows I get the blue screen of death with the error "STOP: 0x0000007B" struck me bad drivers of HD said... I install the drivers on the CD and I can not find the DVD ROM USB that I put them outside the internal DVD ROM... as well as all my support I call usually do not respond to it phone... so I'm between a rock and a hard spot...

  If anyone has an idea please feel free to help...

  Curtis

  Hello

  Assuming that the computer is now clean.

  With XP, you can do a refresh install without really touching the current applications and data.

  Refresh the Installation of XP.

  Boot from the original XP CD. Ignore the first screen offers repair of the Console and continue as if you install a new XP.

  After accepting etc., the new Setup screen lights up and would detect the current XP installation.

  Choose repair by pressing R for repair.

  Use it, would take about 45 min. and you will have an all updated XP Installation by keeping all of your data and configuration of XP.

  P.S. If you have changed the WinXP security definition (special permission as Firewall), to look on them after the update, because they could go back to the default value.

  Jack-MVP Windows Networking. WWW.EZLAN.NET

• DHCP DNS options

  I have a small office, served by a SA520 and Road Runner cable modem.

  What is the recommended setting for our DNS users?  At the present time our DHCP (via the built-in router DHCP server) passes on its own address as the DHCP server.  Then client machines indicate that the DNS server on 192.168.1.1.  Our WAN config on this router then points to the servers DNS of Road Runner.

  Would it be better performance if we passed the DNS servers of direct Road Runner customers?  Or even open DNS servers of google?  It seems that the performance would be better if they went directly to a DNS server rather than the transmission by proxy through the router.

  Thank you

  DNS is a distributed system for balancing on multiple dns servers.  Basically, the sa520 is a proxy dns cache.  The way it works is:

  client wishes to connect to something (for example,www.cisco.com ).  The customer research in the local dns cache, if it has solved this recently he will use the locally cached IP address to connect.  (faster)

  If the local cache has expired or has no entry for www.cisco.com, the client goes to his server dns (sa520), if the site is cached, SA sends the dns response returned and the customer then goes to the site.  If the site is not cached, the sa520 will go to the resolver (Roadrunner) and dns RR can go to its resolver and the process continues until the dns process gets to a server who knows the .cisco .com.     and www (it could be 3 different servers)

  but, and this is where the local caching comes in to make it faster.  If you have several devices on the network, it is likely, someone has already gone on this site, it is cached locally and the router can return a result not resolve on the internet.

  This is more important with web pages that have multiple http connections on several sites (facebook icons, ads, twitter links, graphics, etc.).

  Local caching puts less load on the Web servers of root, or dns googles.

  for average config, you can point your dns 8.8.8.8 SA520 wan settings (google) and see if its impact on your performance, but it really depends on the combination of dns queries that happens on your network.

  generally local caching on the router pointing to a fast dns is the best combination to reduce DNS querys and traffic, but always respond quickly.

  Note, a lot of questions "slow internet" are really caused by the slow dns resolution (as well as the programming of web pages with 10s or hundreds of links on them.

  It will be useful,

  Dan

• SG300 DHCP DNS server secondary Allocation

  I'm not sure that this is possible, but is the DHCP server to assign a secondary DNS server.

  It seems to be an option to place a single DNS entry in.

  I have DHCP configuration to allocate an internet base DNS (DNS Google on 8.8.8.8) so my workstations can access the internet, but I want to allocate a secondary dns for my workstations are aware able to connect to my internal servers through host names.

  Is it possible on the SG300-20 for this

  Thank you

  Paul

  Weird, I'm trying to remember what I did today.  Here is my order show proving that it worked:

  switch706852(config-DHCP) #do sh ip dhcp pool network test

  Address name mask rental range.

  ------------------- --------------------------- ------------- -----------

  test 10.10.10.1 - 10.10.10.6 255.255.255.2 1 d: 0 h: 0 m

  48

  Statistics:

  All-range available free prealloue allocated expired declined

  ----------- ----------- ------ --------------- ----------- ---------- ----------

  6           6        6           0             0          0          0

  DNS server: 4.2.2.2; 8.8.8.8

  Ah ha, history buffer shows no comma, but the space!

  switch706852(config-DHCP) # 4.2.2.2 dns server 8.8.8.8

  -Please do not forget to rate and Marc answered useful posts.

• VPN site to Site, LRT214, Windows network active directory DNS, WINS, and DHCP

  Hi guys

  New to the forum. I'm trying to set up a network between 2 sites (one site to another). Each location has a DC with its own protocol, dhcp, dns and wins on the same domain service. I bought 2 LRT214 to establish the connection between the 2 sites.

  I tried searching, but all results are pretty generic (IE assuming you will use the LRT214 as DNS DHCP etc.).

  I went through the pages of the router configuration, and there are so many options. For my particular configuration objectives, which will be the best way to do this? Open vpn? EasyLink vpn? I think I'd rather do a standard vpn configuration, but then for that I have a lot of questions such as: security methods to use (FROM THE, 3DES, SHA1, MD5, etc.). can I export a cert of AD and import to the router, or export from the router and import to AD?

  I know the questions are in all directions and there is much more that I don't specifically know until I get by configuring this router at both ends. Just trying to come up with an initial plan. I guess someone must have made a similar setup and would like to know what is a good start (maybe less safe to operate), and while I get more familiar and it all worked, start to down to safety.

  Is there maybe a guide who walks through this installation with explanations of each parameter type?

  Sorry for the long post and thanks for any direction.

  I suggest you use the gateway to gateway installation and use all default settings it for this time. To start, you can try this link: http://kb.linksys.com/Linksys/ukp.aspx?vw=1&docid=240cfc1d772642dfad1deb7500a2fa6c_Creating_an_IPSec...

• Network/DNS/DHCP issues with testlab - virtual network Editor is killing me!

  Hey all - a little new with workstation and have been messing around trying to get this to work for so long, I want to just set up my lab already but can't find the catch here.

  So, here is what I tried to do:

  Have a hand of Windows Server 2008 R2 (Controller/DHCP/DNS/Active Directory domain / IIS) addresses/leases DHCP of an internal network (which means, I want some Windows 7 Ultimate customers to assign IPs to the DC and NOT of VMWare offers integrated DHCP). I want clients to be able to use only one NIC (preferably) and both authenticate to AD and connect to the Internet (so I think I'll pass on DNS to resolve external domains?). I'm having a pretty hard time trying to understand what...

  My physical network is an active router Linksys with DHCP, so them to assign an IP address to the PC that I'm looking for this laboratory-perhaps it is a problem as well and must also be configured or have my VMNet reflecting?

  I tried to use NAT, a bridge connection, etc... and even then, when I got my DC with an active internet connection, how would I configure my clients (Win7 devices) to join the network even on my domain controller is? I tried some configurations in these forums as well, but none seems to for what I'm trying (which seems very simple!). Can anyone offer some advice? I am not opposed to the fresh start. Thanks for taking a peek.

  Here is an example of configuration when all the virtual machines are configured for NAT.

  Virtual network Editor:

  DHCP disabled for NAT

  For an example, I assume that the NAT subnet in 192.168. 100. x. You can change this if you wish.

  DC:

  IP address: 192.168.100.10

  Subnet mask: 255.255.255.0

  Gateway: 192.168.100.2

  DNS server: 127.0.0.1

  Configuration of the DHCP server:

  Range: 192.168.100.150... 200

  Subnet: 255.255.255.0

  Gateway: 192.168.100.2

  DNS server: 192.168.100.10

  The DNS server configuration:

  DNS forwarding to: 192.168.100.2 (for other than the own domain URLS)

  Other servers or systems with static IP settings:

  IP address: 192.168.100.11... 149

  Subnet mask: 255.255.255.0

  Gateway: 192.168.100.2

  DNS server: 192.168.100.10

  Customer:

  Networking will be set to automatic.

  In this way, the domain controller will be the only DHCP and DNS server, but each virtual computer will be able to access directly to the Internet. And because the domain controller is the primary DNS, your ad cannot function properly.

  André

• DHCP Server R2 2012 problem

  Hello world.

  I am new to Windows Server. I'm setting up a server to connect thin clients and use it only as an internet point.

  Server roles installed: SC AD, AD DS, AD FS and AD LDS, AD RMS, App Server, DHCP, DNS, file storage Services, Hyper-V, IIS, IPAM, NAP, remote access, Remote Desktop Services. GOING to Services, WDS, Windows Server Essentials experience, WSUS Server Local, all servers.

  My problem is that DHCP does not dynamically IP addresses in the clients. In trying to check the DHCP problem, I used followed enough of ipconfig ipconfig / renew and got the error message "an error has occurred during the renewal of the vEthernet of the virtual interface (my static IP port): unable to contact your DHCP server. I even removed then added the DHCP function and no change.

  What I am doing wrong? Help, please!

  Other tips on this deployment will be welcome, because I'm out of my League here and have no money to wait for him.

  PS. I downloaded and installed SELFSSL for safety certification, as is (without modification).

  Hello

  Post your question in the TechNet Server Forums, as your question kindly is beyond the scope of these Forums.

  http://social.technet.Microsoft.com/forums/WindowsServer/en-us/home?category=WindowsServer

  See you soon.

• Server WRT1900AC DNS (?) Questions

  It is a separate, but related to the thread - question WRT1900AC DHCP do not distribute the specified static DNS entries

  I have not seen this documented function of anywhere, but it seems that the WRT1900AC has an internal DNS server? The router is set to dhcp clients local (front & reverse) on my local network with DNS suffix that is issued by my ISP (via external DHCP). Accordingly, it is causing conflicts on my network name resolution.

  Example: My router receives its external address via DHCP from my ISP (WebPass). The optional parameter "domain name" is not editable (see screenshot)

  

  Now, when a dhcp client internal registers on the network with a name in conflict (for example, the www host name) it will cause a DNS conflict on the LAN:

  Nslookup www.web-pass.com

  Server: 172.16.1.1

  Address: 172.16.1.1 #53

  Name:www.web-pass.com

  Address: 172.16.1.110

  where it should resolve correctly to 184.106.186.186. In addition

  Don't get me wrong, I'd like a DNS local on my router - but for it to be functional and conflict prevention, the following must be done:

  1. Allow editing of the "Domain name" field to create a distinct and not conflicting namespace.
  2. Allow the ability to add static DNS for non-dhcp clients
  3. Leave the option to disable the local DNS server, for those who use & prefer their own internal DNS server
  4. Fix the bug (DHCP/DNS) mentioned at the beginning of the wire

  If anyone has thoughts, observations, any other solution to workaround it please feel free add on this thread.

  Linksys support reached out for me and I got a call with one of its engineers (Julie Louh - which was very useful) on this subject. It also has the problem of DHCP/Static DNS (mentioned at the beginning of the original post) of design to allow the IP address of the router to resolve the site of smart wifi Linksys (Cloud / anywhere configuration). She confirmed that the router uses IP addresses is entered in the static DNS config for DNS lookups.

  On the DNS server issues described in this post, it should present the following feature requests:

  1. Allow editing of the "Domain name" field to create a distinct and not conflicting namespace.
  2. Allow the ability to add static DNS for non-dhcp clients

  Of course, these feature enhancements will move up the chain of management for approval. But I think that if these 2 are implemented it will solve the main problems described here.

  On a separate note, I was very pleased with the customer service and the reaction of Belkin/Linksys. The personal reachout to a technical support technician really shows that they are determined to make this powerful router and feature rich as they promised it would be.

• RV320 as SBS2011 router as DHCP server and use IPSEC

  p {margin-bottom: 0.25 cm; line-height: 120% ;}}

  Our society is really eager to acquire a VPN Cisco RV320 router to replace our old insecurity only PPTP VPN-router. Before actually buying the router, there are a few questions I'd like to have answered.

  In our current setup, we have a SBS2011 standard Server which is used as a DHCP, DNS, Exchange, and SMB server to our network of the company, all the peripheral functions within the same network (192.168.0.1/24).
  We would like to add the RV320 to our network to allow access of employees to the corporate network when they are at home or on the road using IPSEC VPN (client site).

  In our current configuration us use (or used) a VPN router and VPN clients allowed to acquire an IP address from the PPTP server, these IP addresses have fallen in a range that the DHCP SBS2011 server was free to distribute the. It's quite simple actually

  How can we configure the router RV320 so that there will be any conflict between the RV320 router and SBS2011 Server regarding distributing them IP addresses to the VPN IPSEC clients?

  Can configure us the RV320 to transfer earlier requests DHCP server SBS2011?  We want all customers (including IPSEC VPN clients so that they enter the same network).
  Is it possible to simply using the DHCP-relay option (in the web interface) and entering the IP address of the server SBS2011?

  We should disable the DHCP on the router-RV320, or is there another way to continue using the SBS2011 server as the DHCP server, while allowing client-to-site IPSEC VPN for access to our local network?

  Thanks in advance

  Hello and thanks for the exam Cisco for your network needs.

  First of all, I understand that you are used to working with the PPTP connection and now you want to switch to a more secure IPSec connection.

  It's a great idea, but there are a few things to consider:

  1. the RV320 supports the IPSec VPN via the Cisco VPN Client 5.0, you can download it from the site Web of Cisco if after you buy a contract for the router.

  The contract will set will cost about $70, depending on where you decide to buy it, but it has several features including 3 years of telephone support 24/7 and next day replacement guarantee for business if the unit doesn't respond, it also allows you to download special software like the Cisco VPN Client.

  2. for client VPN connection, you can not, or you need to try to relay the DHCP request what, whether the router will handle it and he will probably be on a different subnet from your local network, but it will you access to all devices on the network.

  3-If you do not want to buy the contract, then you can always use PPTP to the RV320 and it will give you the same access that you are already accustomed.

  I hope that was helpful, please let us know if you have any other questions.

• ISA570 DNS internal blocking

  Hello

  I have a new client that I recently installed an ISA 570 to replace a Cisco 1800 router. The customer has a DHCP/DNS internal (10.1.0.10) server that is on the default subnet (10.1.0.0/16). After about an hour the DNS no longer works and the server can no longer access the Internet. The server cannot ping the gateway by default either, but it can ping on its subnet on the other clients.

  Between the ISA 570 and the server is a managed switch that is unmanaged, but I connected directly to ISA with the same results. After a few hours of troubleshooting, we changed the IP address of the server (10.1.0.5) and it started working. Eureka! then an hour later it stops working again. I turned off each additional safety on the ISA function. I have since changed to the 1800 router and have 0 problems.

  I'm puzzled. I made a screenshot of the interface by default ISA package and looked at wireshark. I see the number of packets from the server and 0 with it as a destination.

  last code 1.2.17 and tried 1.2.15 just to check

  any help would be appreciated.

  Thanks in advance

  Try it to point to the ISA and see if that helps. Shouldn't really make the difference and a little stabbed in the dark, but what you feel doesn't really make sense or the other, since you have all the security features disabled. My thought is that it is to see multiple requests to a single host DNS when he expects to manage the DNS. As I was saying, stab in the dark. ;-)

  Sent by Cisco Support technique iPhone App

• RV325: DNS Service for MAC/IP links?

  The RV325 has a possibility to serve DNS responses for the local server names? Most routers these days @home have a list of local devices that they resolve so that there is no need to configure a dedicated DNS. I was wondering if the RV325 can do as well, or I need to configure an additional server?

  Hello Steve,.

  The RV325 option like this, called a local database of DNS.  It is available under DHCP > DNS the local database.  This will allow you to name links to IP Configuration without needing a full DNS server.

  Hope that helps and thanks for using Cisco,

  Christopher Ebert - Advanced Network Support Engineer

  Cisco Small Business Support Center

  * Please note the useful messages *.

• DHCP does not work on 877W.-m.

  I have a 2nd hand 877W-M, updated the bootloader and iOS for more later.

  and now im trying to configure DHCP, as it seems to me, it is done now and should be 'working '.

  but I did not at all given ip, and the weird part is that he trows an error just after the command 'write '.

  I have also reset the router for ' conf-registration 0 x 2101 ' but when it reloads, it goes to 36 * something.

  regarding the error TI trows in after 'write' sound "% IP addresses may not configured on L2 links."

  Here's the version on how it works now:

  With the help of 3350 131072 bytes

  !

  ! Last modification of the configuration at 07:45:46 UTC Saturday, March 27, 2010

  version 15.1

  no service button

  horodateurs service debug datetime msec

  Log service timestamps datetime msec

  no password encryption service

  !

  877W.-m host name.

  !

  boot-start-marker

  boot the system to boot tftp 255.255.255.255

  boot system flash: c870-advipservicesk9 - mz.151 - 4.M6.bin

  start the system flash c870-advipservicesk9 - mz.151 - 4.M6

  Start flash system

  boot-end-marker

  !

  !

  enable secret 5 *.

  activate the password *.

  !

  No aaa new-model

  !

  Crypto pki token removal timeout default 0

  !

  Crypto pki trustpoint TP-self-signed-2740876176

  enrollment selfsigned

  name of the object cn = IOS - Self - signed - certificate - 2740876176

  revocation checking no

  rsakeypair TP-self-signed-2740876176

  !

  !

  TP-self-signed-2740876176 crypto pki certificate chain

  certificate self-signed 01

  *****

  quit smoking

  dot11 syslog

  IP source-route

  no ip Routing

  !

  !

  DHCP excluded-address IP 192.168.2.0 192.168.2.20

  !

  IP dhcp pool lan.local

  network 192.168.2.0 255.255.255.0

  default router 192.168.2.3

  Server DNS 192.168.2.3

  !

  !

  IP dhcp dns update

  !

  no ip cef

  No ipv6 cef

  !

  Authenticated MultiLink bundle-name Panel

  !

  !

  !

  Archives

  The config log

  hidekeys

  0 username cisco password Cisco

  !

  !

  !

  !

  !

  !

  !

  !

  !

  ATM0 interface

  no ip address

  no ip route cache

  Shutdown

  No atm ilmi-keepalive

  CDP enable

  !

  interface FastEthernet0

  no ip address

  !

  interface FastEthernet1

  no ip address

  Shutdown

  !

  interface FastEthernet2

  no ip address

  Shutdown

  !

  interface FastEthernet3

  no ip address

  Shutdown

  !

  interface Dot11Radio0

  no ip address

  no ip route cache

  Shutdown

  Base speed - 1.0 2.0 basic basic-5, 5 6.0 9.0 basic-11, 0 12.0 18.0 24.0 36.0 48.0

  54.0

  root of station-role

  !

  interface Vlan1

  no ip address

  no ip route cache

  Shutdown

  !

  IP forward-Protocol ND

  IP http server

  local IP http authentication

  IP http secure server

  !

  !

  !

  !

  !

  !

  !

  !

  control plan

  !

  !

  Line con 0

  exec-timeout 0 0

  no activation of the modem

  Speed 115200

  line to 0

  line vty 0 4

  password *.

  opening of session

  transport of entry all

  !

  max-task-time 5000 Planner

  end

  IM guess im overlooking something simple, but I don't have experience with router and yet, that's why I bought this type

  Hello

  -reactivate the ip Routing:

  config t

  IP routing

  -As Paolo said if you want to use the ethernet and wireless, you will have to fill:

  Bridge Protocol ieee 1

  Bridge IRB

  1 channel ip bridge

  int bvi1

  IP add 192.168.2.3 255.255.255.0

  int vlan 1

  Bridge-Group 1

  Concerning

  Alain

  Remember messages useful rate.

• Problem of DNS with AnyConnect on SAA

  / * Style definitions * / table. MsoNormalTable {mso-style-name : « Table Normal » ; mso-tstyle-rowband-taille : 0 ; mso-tstyle-colband-taille : 0 ; mso-style-noshow:yes ; mso-style-priorité : 99 ; mso-style-qformat:yes ; mso-style-parent : » « ;" mso-rembourrage-alt : 0 cm 5.4pt cm 0 5.4pt ; mso-para-marge-haut : 0 cm ; mso-para-marge-droit : 0 cm ; mso-para-marge-bas : 10.0pt ; mso-para-marge-gauche : 0 cm ; ligne-hauteur : 115 % ; mso-pagination : widow-orphelin ; police-taille : 11.0pt ; famille de police : « Calibri », « sans-serif » ; mso-ascii-font-family : Calibri ; mso-ascii-theme-font : minor-latin ; mso-fareast-font-family : « Times New Roman » ; mso-fareast-theme-font : minor-fareast ; mso-hansi-font-family : Calibri ; mso-hansi-theme-font : minor-latin ; mso-bidi-font-family : « Times New Roman » ; mso-bidi-theme-font : minor-bidi ;}

  Hello

  I have a problem with the local domain name resolution when connected via a VPN SSL using anyconnect.

  I've identified it is due to the fact that the assigned DHCP DNS is not by adding a domain suffix.

  I proved this by adding the local domain after the host name, I'm ping.

  On the the ASA5505 ASDM I ensured that the appropriate field is identified on the DNS, but this still does not work.

  Please could someone guide me in the right direction. It should be on the profile that is downloaded or a configuration that automatically adds the correct suffix when DNS queries are sent to the DNS server.

  Hi again,

  I just figured my DNS suffix name resolution problem and I thought I'd share my solution in case it helps you:

  • Connect to ASDM, select VPN remote access, expand access to the network (Client), highlight the group policies.
  • On the right, edit the group policy that you connect your remote users.
  • Screen that comes up, highlight the server on the left and then click on the small arrow to the right to display other editing options in group policy.
  • Fill in the default domain with your internal domain name (for example, mydomainname.local)
  • Click Ok to save and save config to Flash running.

  Test of reconnection to with a client AnyConnect and performing a ipconfig/all.

  For me, I can now see the suffix dns that I defined in the group policy and successfully, I can ping internal hosts by name.

  Good luck!