Airport Extreme Double NAT / AT & T NVG510

Similar Questions

• Are not relayed queries ARP on bridged Airport Extreme

  I have a router Xfinity and set up Airport extreme as a router jumpered to connect LAN devices on a different floor.

  Looking at network traffic, I noticed that the ARP requests are delayed or not relayed on the router bridge making it appear that these devices are offline.  These applications should get relayed?  Is there a special way to configure this option to get there?

  I used tcpdump to monitor network traffic.

  It is one of these small problems that make it difficult to use sometimes Apple routers... ARP is a problem.

  Apple recommended using the extreme double NAT... I don't like it, but you can see why.

  I recommend using static IP approach.

  Re: time capsule Airport Guard disconnection

  You sound like you know what you're doing, so it's not difficult for a person with some networks nouse.

  Post again if you find this difficult.

  One thing I added is the default domain in the Airport extreme is local and it seems never even change in bridge... I doubt that you can change the domain of the Xfinity router setting but if you can do then. Do local as well since you can not change the configuration of the router from apple.

  Finally if you still want to use the bridge... try connecting to the WAN port ethernet port LAN of the extreme... In bridge WAN is connected to the local network, but it may be less accurate in bridge, you can even set a static IP address and with the connection to the LAN port ethernet customers should get all the information directly from the Xfinity... If your extreme is the KT model... There is definitely something wrong with the extreme WAN.

• The settings DHCP Airport extreme & NAT - cannot change default of NAT IPs?

  Hello

  I'm trying to configure Airport extreme, the most convenient to use for our office.

  Our Office IP is 10.255.x.x

  When I'm trying to Setup DHCP and NAT, in NAT options, there is only 10.0.x.x, 172.16.x.x and 192.168.x.x

  How can I get NAT to have 10.255.x.x?

  Without the NAT settings, I can not get this Airport Extreme to assign valid IP addresses and so unnecessary

  Sorry, but Apple will only accept the 10.0.x.x addresses to be assigned by the AirPort Extreme.

• The AirPort Extreme has it double bands?

  I'm looking into buying an AirPort Extreme. Support double bands? If Yes, can I set up so that the two groups have the same network name, and the device can choose which one to use?

  Support double bands?

  Yes, by default.

  can I set up so that both groups have the same network name.

  It is the default set up for AirPort Extreme.  It is also possible to assign different names to the bands 5 GHz and 2.4 GHz if you wish.

  and the device can choose which one to use?

  In theory, Yes. In practice, things don't always work out so although theory suggests, you need to check and see how well facilities choose their connections in your home.

• How to use Airport Extreme with ethernet leased line

  Hello friends,

  I was wondering if Airport Extreme is a true router, can I connect gout ethernet of my leased line directly in its WAN port, rather than put the provided ISP router between the two? I have lived many positions and all seem to suggest the connection of a cable/dsl modem to the WAN port on the extreme. Not found any information where it shows the ethernet line rented directly linking in the Giga WAN port, without any 2nd device in the meantime.

  If it's possible, then I guess also what public IP provided PSI can be put into the WAN of AE interface. Can someone develop more on it and detail the steps of configuration? Given that EI has basic firewall NAT, I think it's doable, but can someone confirm please.

  Thank you very much.

  Temporarily, if you connect your computer directly to the Ethernet line, can you get a good connection Internet in this way?

  If so, then AIrPort Extreme could function as a router for you, but you are also likely to face a Double NAT error on the network. How well... or, even if... This might work cannot be known until try you it.

  If the computer cannot connect, then what is required of your supplier for the computer to connect and get Internet access?

• Apple Airport Extreme and new FIOS router - problem

  Hello, I have an Apple Airport Extreme 802.11n base station, which worked well with a Comcast router.  When you set up with Comcast router, I set the router to comcast to bridge and the Airport Extreme has done all the work as the main router. When I switched to Verizon FIOS today, I get the typical mistake of NAT double (that I did with the Comcast before configuring the router to Comcast to bridge).  However, the tech support guy FIOS said that was not an option, so he set up my Airport Extreme in bridge - router off mode mode.  This really live to the top incoming access using SSH, Timbuktu or the Apple screen sharing, given that I can't assign fixed IP addresses to the computers on my network and can not use the Airport Utility Network Port settings to open "pipes" for a particular computer.  In addition, I'm more comfortable using Airport Extreme, rather than things FIOS. Someone at - it other than enter Comcast suggestions?

  I did a search and didn't see a post on this in the discussion forum.  Thank you

  What is the brand and model of your router Verizon? Verizon provides you with administrator access to it to allow you to make changes?

• I just installed an airport extreme router and WiFi works, but the status light still flashes.

  I just installed an airport extreme router and WiFi works, but the status light still flashes.

  Open airport utility... Click EI... and see what the cause of the problem. It will give the list of questions on the summary page. Click on each of them and he will offer you even solutions.

  for example the firmware needs to be updated... nothing major... or DNS is wrong or double NAT...

  Without our crystal ball, we do not know what is the issue.

• Airport Extreme and Broadband Modem/Router

  I have my Airport Extreme (5th generation) plugged into a Broadband Modem/Router combo. I would like to have both able to use their wireless capabilities. The Airport Extreme has been previously connected to a Modem broadband all my IP addresses came by Airport Extreme (192.168.2. *). With the New Modem/Router combo broadband, it uses 10.0.0 * so I would be able to use Airport Extreme to add the 192.168.2. * While having the 10.0.0. * the Broadband Modem/Router combo.

  Is this possible and, if so, how do I configure Airport Extreme to do?

  Normally, you don't want two devices on the same network as the two try to act as routers to the same network. Which will produce conflicts of IP addresses... which can possibly be addressed... and a Double NAT problem, which cannot.

  The Double NAT error can cause a number of unpredictable issues... things like the problems of communication between the devices on the network, slow navigation... or, not navigation in the case of certain websites, Internet access slower, to name a few.

  Yes, some users may get away with a Double NAT on a single home network, but unnecessarily complicating things over a network is normally something you want to avoid.

  We do not recommend it, but if you really want AirPort Extreme for use range 192.168.2.x however, you can easily make this change using AirPort Utility. If you are not sure how to do this and need help, then we will need to know which version of AirPort utility you are using.

  To find, open AirPort Utility, and then click the menu of AirPort Utility in the far left of the screen corner. Click on about AirPort Utility to see what version you have and post back with that info.

• Airport Extreme network 4G connection

  I currently have the following configuration for my internet appliances:

  I have an Airport Extreme unit serving wireless three units Airport Express to extend WiFi coverage throughout the House. Physically connected to the Airport Extreme via ethernet are two televisions Panasonic who can access the same places predetermined via the internet (for example, BigPond movies and television, People, ABC iView, SBS OnDemand). To enable connectivity to other sites such as Netflix, Stan etc every Panasonic TV has its own unit of Apple TV connected to Airport Extreme via WiFi.

  I use Airport Extreme for all my other internal needs such as web connectivity MacBook and iPhone.

  The Airport Extreme WAN port is so physically connected to the ADSL modem and line phone Telstra for the Exchange, which is about 4 km.

  The problem is that the speed of download of the ADSL 2 + are poor, maxing out at about 3.5mbps. When I listen to the live broadcast of MotoGP and World Superbike racing the picture often freezes while he puts in buffer. Watched movies via Netflix and Stan often freezes too.

  I just ran a speed test on the Telstra Mobile 4 G network and I got a download speed of 111.94Mbps 41.77Mbps upload speed.

  Now, I'm thinking it would be great if I could connect my home network to the internet via their WiFi 4 G device X Pro Advanced.

  My question is this:

  Is it possible to connect the Airport Extreme to the Telstra WiFi 4 G device and the use of the mobile network for my internet and get rid of the ADSL modem? I don't think I can use USB Extreme airport connection, I think that the port is only to connect a printer, but I do not know if the Airport Extreme talk wireless Telstra 4 G device. Documentation of Telstra said their device will connect up to 10 devices using WiFi, but I do not know if there would be problems with the Airport Extreme router to talk to her.

  After spending heaps on all these units of Apple (1 x Airport Extreme) and 3 x Airport Express I don't want to lose, but if there is no way to Airport Extreme wireless unit of Telstra (or if this method is ridiculous) so maybe I might be able to get the device of Telstra to talk to all my other WiFi devices directly. Then, I might be able to sell the extreme and expresses it.

  I had a discussion with Apple Support through their chat session, but the person with which I spoke was not able to help.

  Thanks in advance.

  You need a device that is able to connect via Ethernet to the AirPort Extreme base station.

  With a plain/direct USB 4 G modem, a router broadband mobile sometimes can act in Bridge mode and thus provide a conversion method. For example, Dovado has these routers, but their modem (http://www.dovado.com/en/support/modems) compatibility list appears to cite that a single Telstra USB 4 G modem (ZTE) which supports the mode bridge.

  Your question indicates, however, that the 4G modem is actually a mobile access point (providing a local Wi - Fi network). If so, it may or may not be possible to use the wireless Ethernet Bridge (maybe even a model of Apple AirPort Express appropriate) to join this hotspot wireless and then connect via Ethernet to the entrance of the AirPort Extreme. This is all experimental, however. Various problems, including double NAT, are to be expected.

• Garage double NAT & DHCP - bridge Possible issue error

  Help...

  So it's my game on a yacht...

  I have a MacMini (run bootcamp Windows 7 Pro), so actually it's a PC.

  • I use internal WiFi adapter of the MacMini to get my internet connection of various different Marina I could stay in
  • I then share the connection with the internal LAN adapter WiFi adapter WiFi
  • This allows me to share the WiFi port with other devices on the yacht

  Then I have an AirPort Extreme-

  • I then run an Ethernet on the MacMini Port CAT6 cable
  • on port WAN on AirPort Extreme
  • AirPort Extreme now has an internet connection (from the marina, WiFi)
  • I then activated the WiFi on AirPort Extreme to create a WiFi network on the yacht
  • and it gets its internet connection from the WAN port, which comes in turn the MacMini, which in turn comes from the Marina WiFi

  Connected to the AirPort Extreme are-

  -iPhones, iPads, MacBook, Apple TV, Smart TV, etc etc.

  -Some devices are connected using the LAN ports and AirPort Extreme cable

  -Some devices are connected by WiFi using WiFi airports

  I want DHCP to be handled by the AirPort Extreme-, mode I set as "DHCP and NAT".

  What is the problem-

  • AirPort Extreme shows an error
  • "double NAT and DHCP.
  • and suggested I turn it in Bridge mode
  • but I don't want to do that

  Any thoughts?

  Concerning

  Tim

  Would help if we could get the exact message you see.  You will probably need to change the DHCP-range on the AirPort Extreme to a different value, and then use the option 'Ignore' the Double NAT then the airport will show a green light.

  You will have to live with the Double NAT if you want AirPort Extreme to act as a remote router that provides a private network.

• Airport Extreme network orientation parameters

  Here is our network (diagram below) configuration:

  Internet is available through a pass by modem cable to the Sonic Wall set with a static IP address. The wall of sound, we have a port to a point of cradle that is not with a static IP and gives on a totally different range of the IPS via DHCP to our POS. Another port of the Sonic Wall, I had going to the WAN port on our new airport extreme. I have a switch with some control machines connected to the Airport extreme via an ethernet cable. All devices connected via wifi or hard cable with Airport extreme are placed for IPS via DHCP.

  I am trying to configure parameters on a new device extreme airport our Wi - Fi to my company. We recently had some problems of internet connectivity for a minute or two at a time and I wonder if it could be some sort of conflict of IP address or if it was just a failure of the internet that did not affect the status of the modem lights cable (all were green = connected). Brief history: the most extreme airport on a port of our Sonic wall with the airport extreme is default DHCP and NAT (he gave me the orange light, and he suggested that I put it in Bridge mode). Internet in all of our network seemed to work very well, so I just left it alone.

  30 days later we have a brief interruption in internet connectivity with our credit card processing POS two days in a row for a minute or two of. After the second case, we shut down the extreme airport just in case that was causing our problem. I had a technician COMPUTER down and he suggested I put the airport with a static IP (x.x.7.80) outside the range of IP addresses of our wall router Sonic DHCP-range (let's say it was x.x.7.100 - x.x.7.252) he has been giving and then configured the network settings for DHCP LAN only Airport (I used x.x.7.10 - x.x.7.70) with a range that doesn't overlap the IP of the Sonic Wall range. Part of the confusion, I had during the configuration of the airport was if I needed to plug in our Sonic Wall static IP address in the 'router' address and if I needed to use the DNS servers that appeared in the Sonic Wall settings (I thought he was shooting at those of the cable company). After you make these changes, I got a green light on the airport and the connection was working fine when tested. The next day, we had another interruption of connectivity where our treatment card and internet from WIFI got interrupted. I unplugged the power of WIFI and it seemed that our POS network has begun to process cards normally again.

  The point side cradle of the network is to grasp what IP the sonic wall gives him and give the address on a completely different system that is used in the other part of the network. Another question would be if I can just put the Airport extreme to DHCP mode under the 'Internet' parameter and go to the bridge on "Network" setting Mode I don't know how the bridge Mode would affect our network. I'm not wanting to do anything on the side POS (point of cradle) which is rather difficult with someone like me who is not an expert. Any thoughts are appreciated to help me resolve this issue.

  

  Brief history: the most extreme airport on a port of our Sonic wall with the airport extreme is default DHCP and NAT (he gave me the orange light, and he suggested that I put it in Bridge mode). Internet in all of our network seemed to work very well, so I just left it alone.

  There are two schools of thought on this.  The traditional method (better, in my opinion) would have the AirPort Extreme, put in place in Bridge Mode... Since you already have another router... (the Sonic Wall device which is upstream of your network)... providing routing services.

  Although you might be able to make a network work well with two different devices acting both as of the routers on the network, it complicates things, adds another firewall to the network, and also produces a base called Double NAT network error.

  Sometimes you can get away with a Double NAT error on a simple network, but the double layers of NAT may cause some unpredictable problems. The usual problem is slower navigation, or you will not be able to access some Web sites.  Network devices may not communicate reliably, or communicate at all in some cases.

  This is why Apple software configuration you advise to set up AirPort Extreme in bridge... Mode to fix the Double NAT error. This type of configuration simplifies your network... Since one device will put a router... not two.

  In recent years in particular, we have seen some tips on forums that goes against the rules of traditional networking.  These people that it is OK to have two devices both try to act as routers to the same network... and to 'ignore' the Double NAT error on the network.

  It's interesting tips, since the Apple software advises you avoid having a Double NAT on the network... and some advanced features like Back to My Mac specifically Apple advise to avoid a Double NAT error on the network.  If you have a console online game and you want to play interactively on Internet, you already know that a Double NAT error will not allow this.

  My suggestion would be so... If you have not already tried it... to set up the AirPort Extreme in Bridge Mode.  Apple calls this setting off (Bridge Mode)... which simply means that routing services are turned 'Off' Mode bridge.

  You can still assign a static to AirPort Extreme IP address, if you want, but the devices that are connected to the AirPort Extreme will receive the Sonic Wall router network IP addresses... Since the airport acts as a simple device to "go" when he returns and in Bridge Mode.

• Connectivity with AT & T-Motorola 3360 and Airport Extreme problems

  Bought a new extreme-Airport (7.7.3) to replace my old AE after 9 years of service.  The installation procedure, but could not get the airport to connect with my modem (Motorola 3360).  Called at & T and they crossed put me the modem in Bridge mode and which seemed to work.  But only temporarily (about 5 hours).  Restart the modem and the airport was not working.  Troubleshooting I tried to plug my MacBook directly into the modem, but even the computer couldn't get an internet connection.  Another call to AT & T and they reconfigure the modem to their end.  After 90 minutes and try everything they could, they have finally admitted defeat and told me that they could not solve the problem.

  However, after a fairly exhaustive search of this forum, seems to be two issues that many people is with Airport extreme.  One is that the modem (in this case a Motorola 3360) is perhaps not fully compatible with the airport.  The AT & T support person was not aware of this until I asked about it, so she did a quick search and was rather surprised to see that there is a lot of people having problems with the Motorola Modem.  She told me that they use no more Motorola modems but ship the 6200 of Netgear.  "All know issues?", I asked.  She sought and, to his surprise, even once, there was.

  So, first question.  Does anyone know a modem that is compatible with the airport or use one that they had to limit problems with?

  The second question prevailing seems to be with the IPv6 protocol.  Anyone know if there are problems with the AT & T IPv6 protocol and the most extreme airport?  I did not disable IPv6 yet to see if that helps.  I thought I'd ask here first.  Couldn't find anything on the AT & T site.

  When I return from the road (great place to go to get away from technology) I will make a new round of full power of all the components and try Setup again from scratch.

  Any ideas or suggestions would be greatly appreciated.  Miss all know profanity.

  Thank you.

  Any other relevant information: 6.3.1 the utility Airport, Airport Extreme 7.7.3, MacBook Pro running 10.8.4, modem Motorola 3360, AT & T high speed DSL, shoe size 11-1/2 wide.

  When you have configured the 3360 as a 'bridge', this would mean that the AirPort Extreme should then be put in place to provide the PPPoE connection service. The airports are not known for their reliability in this type of installation... no matter the type of modem that you can select, so I drop this method as a connection option.

  If you want to keep the 3360... and you have time to experiment... then you can set the 3360 to its original default settings and configure the router from the airport most convenient to connect using DHCP in router Mode of DHCP and NAT.  That will produce what is called a message Double NAT, but maybe it's not of concern on a simple home network, and Apple provides you with the option 'Ignore' the Double NAT, so the airport will display a green light instead a light orange blinking slow.

  You need to try this configuration for a few days to see if the Double NAT will be a problem or not, because it is not possible to predict the effect of a Double NAT on a network... you have to test a few days see how things behave.  If this configuration works well, for you, then you can leave it as what.

  Please note that I do not recommend this type of installation, just suggesting it as an option this work could , if you want to keep the 3360.

  How Double NAT affect IPv6, I can't tell, since I did not use att for several years, and I'm not familiar with their implementation. On wired, IPv6 works fine on the airport with Comcast and Time Warner.  We can provide these parameters for you if want, but have no idea how well... (or if)... they will work with ATT.

  If the installation of Double NAT does not work, your best option would be to go there and get a modem/router or gateway to ATT device and then set up the most convenient airport in Bridge Mode works correctly with the modem/router ATT.  You will turn on the routing of ATT function in this type of installation, but the airport can also produce a signal from the wireless network that you can use.  The modem/router ATT will also provide a wireless signal that you could use for guests, or disable the feature, if you do not need two wireless networks.

  This may also be the best option if you want to configure IPv6 as IPv6 of ATT service must be compatible with the modems/routers and gateways.

• problem w / Airport Extreme base station and modem Netgear broadband

  I just changed to ATT Uverse to Time Warner - internet only.  With Uverse, I was using my Airport Extreme base station to create a wireless network, and it has worked well in this capacity.  When you switch to TWC, the tech got the modem (TWC allows you to buy your own modem, so I bought a Netgear CM600 a recommended model) enabled and works very well, but could not get the Airport base station to talk about her (yellow light blink on the base station).  So, he opted for a TWC wireless modem/router.  Interestingly, I found that I could plug the Airport base station in the TWC modem (without any reconfiguration, just plugged into the WAN port base station to the modem ethernet port, as I had had with Uverse equipment) and voila!  It worked immediately.

  So, I called TWC to retry my Netgear modem.  I have the base station power off, plugged on the ethenet port Netgear, put back under tension and just got the blinking light.  I know that the modem does not work, because my iMac's network to the internet through the base station, for the Netgear, and go outside and I can fine surf in this way.  So it is something in the wireless configuration that must be different between the TWC modem and the Netgear modem.

  Obviously, I'm not an expert at this, basic troubleshooting tips would be appreciated.  The base station functions as a router (I can connect through a port ethernet through it), it is simply not generate a WiFi network for me...

  Thanks for the tips

  Steve

  Carlsbad, CA

  So, he opted for a TWC wireless modem/router.  Interestingly, I found that I could plug the Airport base station in the TWC modem (without any reconfiguration, just plugged into the WAN port base station to the modem ethernet port, as I had had with Uverse equipment) and voila!  It worked immediately.

  If your AirPort Extreme has been in its original configuration, it would act as a wireless Internet router. If you connect another router upstream to the extreme, there is work, but you'll have a condition known as: Double NAT. This isn't necessarily bad, but should be avoided if possible. To do this is simply to reconfigure the downstream router (in this case, the extreme) under a bridge. This disable its functions of routing and remove the error condition.

  However, if your extreme base station has been reconfigured as a bridge, if connect you directly to a simple modem, like the Netgear CM600, then this configuration will not work because no device will provide the necessary routing functions.

  It's always a good idea to perform a full power recycle your network hardware during change of equipment. Maybe that's the only thing your missed when you design your own? If you haven't done so already, please give it a try with the CM600 & Extreme combo. After return your results.

• AirPort Extreme A1408 (5th generation) low flow on both WiFi and wired

  Hi all

  I have an extreme A1408 Airport (5th generation), which is connected to the internet via a cable UTP (wall plug, the internet provider has its routers in the basement of the apartment building). My plan is to 1000 / 200 MB (down / up - Romanian RCS & RDS, Fib), however, I'm getting averages of 90 / 80 MB speeds on speedtest.net. The best I've ever had was about 180 / 200 Mbps, but that happened once.

  The low speed produce on both WiFi and wired (I have an iMac, a MBP, a 6s iPhone and an iPad Mini that connect through WiFi, on the 5 GHz network and a Mac Mini that is connected to the router), with my wireless devices to full signal strength and connection to 450 Mbps. Since low speeds correspond to the cable wire / WiFi (I expected to the Mac mini to outdo the other, since its on gigabit ethernet), this is not a discussion on how to choose the best channel (I tried auto or manual installation, with it on different channels) or change its placement (this corresponds with the MBP even right next to the router) to get the best reception.

  I tested the connection directly paste the cable in the MBP (via the adapter ethernet of love at first sight) and got 850 / 200 Mbps, then my provider connection works as expected.

  I also changed all cables UTP CAT 5, in order to support gigabit speeds to.

  My AirPort Extreme is on firmware 7.6.4, set up as follows:

  • PPPoE: always on
  • IPv6: link-local
  • Wireless:
    • WPA2 Personal (faster)
    • No network comments
    • the radio 802 mode value. 11A / n - 802.11b/g/n (self)
    • country of Romania
    • tried auto and manual selection of channels 2.4 Ghz and 5 GHz (by analyzing other autour networks)
  • Router mode: DHCP and NAT (NAT Port Mapping Protocol active)

  All iDevices I use are updated to their latest version of the OS.

  Is there something that I am missing? Any ideas?

  Thanks in advance for your time!

  Most likely the problem you see is that Apple has not designed the more practical to work with fiber Internet airport base stations. Although, the 5th generation 802.11n AirPort Extreme can manage, at best, 400 - 500 Mbps of throughput (in bridged mode) via its WAN - LAN interface, you will see about half of this when it is enabled as a router (as yours is.) In addition, if your ISP has their router activated ahead of yours, you can also receive a "Double NAT" error as well.

• Airport Extreme with guest network configuration

  Hello

  I have a two-storey house and want to spend an Airport Extreme on each floor.

  In technichal room I have my ISP and a witch (192.168.1.0) dhcp router

  There is also a switch and a patchpanel which I have connected my extreme two boxes to.

  Does anyone have a suggestion on how to implement it properly? I would like to have internal wich wpa2 network and a network of comments without password and of course I want to have the same ssid, etc. on each floor.

  Thanks in advance.

  Henning

  Does anyone have a suggestion on how to implement it properly?

  There's the rub.  Since you have a router supports DHCP and NAT services to the network 'upstream' extremes of the airport, the airports must be configured in Bridge Mode to avoid Double NAT error that occurs when you have more than one router on a network.

  Unfortunately, the network comments feature does not work correctly when the airport is in Mode Bridge connected to another router.  The 'main' or private network works OK, but 'guests' will not be able to access the Internet.

  The only way to do what you want would be to configure things wrong by...

  (1) connect to an AirPort Extreme to the switch and configure it as a router to "create a wireless network" using DHCP and NAT.

  (2) linking the second AirPort Extreme for the first AirPort Extreme... not to the switch... and implement the extreme second "extend using Ethernet.

  Since you will have a Double NAT on the network, there is no guarantee that things will not work properly. Sometimes you can get away with a Double NAT error on a simple network, but it can cause difficulties of communication between devices on the network and the difficulties with Internet connections as well.

  If you have a console online game and want to play interactively on the Internet, the Double NAT error will not allow this to happen.  Similarly, if you plan to use Back To My Mac or Port Forwarding for access over the Internet to remote devices, the Double NAT will allow these connections probably not happen.

  We do not recommend a Double NAT Setup, but we have some ideas on how to do it. There of probably no harm in trying the Double NAT configuration if you have the time and are willing to experiment to see if it peut work for you, I'm sorry, but there are no guarantees here.