MSI RG54G3 Wireless 802.
Hiermit erklärt Micro Star International CO., LTD dass sich dieses Produkt in Übereinstimmung mit den grundlegenden Anforderungen und den anderen relevanten Vorschriften der Richtlinie 1999/5/EG befindet. Die Konformitätserklärung kann auf folgender website eingesehen werden: http://www.msi-technology.de/support/dl_man.php?Prod_Typ=9 Hereby, Micro Star International CO., LTD declares that this device relevant provisions of Directive 1999/5/EC.
FCC Caution 1. 2. 3. 4. The device complies with Part 15 of the FCC rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) This device must accept any interference received, including interference that may cause undesired operation. FCC RF Radiation Exposure Statement: The equipment complies with FCC RF radiation exposure limits set forth for an uncontrolled environment.
Important Safety Precautions Always read and follow these basic safety precautions carefully when handling any piece of electronic component. 1. 2. 3. 4. 5. 6. 7. 8. Keep this User Manual for future reference. Keep this equipment away from humidity. Lay this equipment on a reliable flat surface before setting it up. The openings on the enclosure are for air convection hence protects the equipment from overheating. All cautions and warnings on the equipment should be noted.
Contents Chapter 1 Introduction .......................................................................................................... 1 Functions and Features..................................................................................................... 1 Packing List ..................................................................................................................... 3 Chapter 2 Hardware Installation.................................................................................
C Chhaapptteerr 11 IInnttrroodduuccttiioonn Congratulations on your purchase of this outstanding Wireless Broadband Router. This product is specifically designed for Small Office and Home Office needs. It provides a complete SOHO solution for Internet surfing, and is easy to configure and operate even for non-technical users. Instructions for installing and configuring this product can be found in this manual.
Wireless functions l High speed for wireless LAN connection Up to 54Mbps data rate by incorporating Orthogonal Frequency Division Multiplexing (OFDM). l Roaming Provides seamless roaming within the IEEE 802.11b (11M) and IEEE 802.11g (54M) WLAN infrastructure. l IEEE 802.11b compatible (11M) Allowing inter-operation among multiple vendors. l IEEE 802.11g compatible (54M) Allowing inter-operation among multiple vendors. l Auto fallback 54M, 48M, 36M, 24M, 18M, 12M, 6M data rate with auto fallback in 802.
Advanced functions l System time Supported Allow you to synchronize system time with network time server. l E-mail Alert Supported The router can send its info by mail. l Dynamic dns Supported At present,the router has 3 ddns.dyndns,TZO.com and dhs.org. l SNMP Supported The router supports basic SNMP function. l Routing Table Supported Now, the router supports static routing.
C Chhaapptteerr 22 H Haarrddw waarree IInnssttaallllaattiioonn 2.1 Panel Layout 2.1.1. Front Panel Figure 2-1 Front Panel LED Function Power POWER Color Status Green On Green Blinking Description Power is being applied to this product. indication System Status M1 is flashed once per second to indicate system is alive. status WAN port WAN activity Wireless WLAN Link/Act. On The WAN port is linked. Green Green Blinking The WAN port is sending or receiving data.
2.1.2. Rear Panel Antenna LAN Ports 1~4 Reset PWR WAN Port Figure 2-2 Rear Panel Port Description PWR Power inlet WAN the port where you will connect your cable (or DSL) modem or Ethernet router. LAN Port 1-4 the ports where you will connect networked computers and other devices.
2.2 Procedure for Hardware Installation 2. Decide where to place your Wireless Broadband Router You can place your Wireless Broadband Router on a desk or other flat surface, or you can mount it on a wall. For optimal performance, place your Wireless Broadband Router in the center of your office (or your home) in a location that is away from any potential source of interference, such as a metal wall or microwave oven. This location must be close to power and network connection. 2. Setup LAN connection a.
C Chhaapptteerr 33 N Neettw woorrkk SSeettttiinnggss aanndd SSooffttw waarree IInnssttaallllaattiioonn To use this product correctly, you have to properly configure the network settings of your computers and install the attached setup program into your MS Windows platform (Windows 95/98/NT/2000). 3.1 Make Correct Network Settings of Your Computer The default IP address of this product is 192.168.1.254, and the default subnet mask is 255.255.255.0.
C Chhaapptteerr 44 C Coonnffiigguurriinngg W Wiirreelleessss B Brrooaaddbbaanndd R Roouutteerr This product provides Web based configuration scheme, that is, configuring by your Web browser, such as Netscape Communicator or Internet Explorer. This approach can be adopted in any MS Windows, Macintosh or UNIX based platforms.
4.1 Start-up and Log in Activate your browser, and disable the proxy or add the IP address of this product into the exceptions. Then, type this product’s IP address in the Location (for Netscape) or Address (for IE) field and press ENTER. For example: http://192.168.1.254. After the connection is established, you will see the web user interface of this product. To log in as an administrator, enter the system password (the factory setting is ”admin”) in the Password field and click on the OK button.
Setup Wizard - Select WAN Type: For detail settings, please refer to 4.3.1 IP Setting. 4.
4.3.1 IP Setting – WAN Type, IP Mode Press “Change” This option is primary to enable this product to work properly. The setting items and the web appearance depend on the WAN type. Choose correct WAN type before you start.
1. LAN IP Address: the local IP address of this device. The computers on your network must use the LAN IP address of your product as their Default Gateway. You can change it if necessary. 2. WAN Type: WAN connection type of your ISP. You can click Change button to choose a correct one from the following four options: A. Static IP Address: ISP assigns you a static IP address. B. Dynamic IP Address: Obtain an IP address from ISP automatically. C. Dynamic IP Address with Road Runner Session Management.(e.g.
4. Maximum Transmission Unit (MTU): Most ISP offers MTU value to users. The most common MTU value is 1492. 5. Connection Control:There are 3 modes to select: Connect-on-demand:The device will link up with ISP when the clients send outgoing packets. Auto-Reconnect(Always-on):The device will link upw with ISP until the connection is established. Manually:The device will not make the link until someone clicks the connect-button in the Staus-page. 4.3.1.5 PPTP 1.
4.3.1.6 L2TP First,Please check your ISP assigned and Select Static IP Address or Dynamic IP Address. For example:Use Static 1. My IP Address and My Subnet Mask: the private IP address and subnet mask your ISP assigned to you. 2. Server IP Address: the IP address of the PPTP server. 3. PPTP Account and Password: the account and password your ISP assigned to you. If you don't want to change the password, keep it empty. 3. Connection ID: optional. Input the connection ID if your ISP requires it. 4.
6. Connection Control:There are 3 modes to select: Connect-on-demand:The device will link up with ISP when the clients send outgoing packets. Auto-Reconnect(Always-on):The device will link upw with ISP until the connection is established. Manually:The device will not make the link until someone clicks the connect-button in the Staus-page. 4.3.2 Wireless Setting, and 802.
Wireless settings allow you to set the wireless configuration items. 1. Network ID (SSID): Network ID is used for identifying the Wireless LAN (WLAN). Client stations can roam freely over this product and other Access Points that have the same Network ID. (The factory setting is “default”) 2. Channel: The radio channel number. The permissible channels depend on the Regulatory Domain. The factory setting is as follow: channel 6 for North America; channel 7 for European (ETSI); channel 7 for Japan. 3.
WPA-PSK 1. Select Preshare Key Mode If you select HEX,you have to fill in 64 hexadecimal (0, 1, 2…8, 9, A, B…F) digits If ASCII,the length of preshare key is from 8 to 63. 2. Fill in the key, Ex 145678 WPA Check Box was used to switch the function of the WPA. When the WPA function is enabled, the Wireless user must authenticate to this router first to use the Network service. RADIUS Server IP address or the 802.1X server’s domain-name.
4.3.3 WDS The Wireless Distribution System (WDS) supports peer-to-peer AP communication. Select Enable to allow Bridge (WDS) mode between routers or Disable to block communication between routers. To enable WDS, set the Wireless Bridging (WDS) function to Enable. Enter the Wireless MAC address of the router to communicate with in the form of two characters separated by a colon and click Save. 4.3.4 Dynamic DNS To host your server on a changing IP address, you have to use dynamic domain name service (DDNS).
You have to define: Provider Host Name Username/E-mail Password/Key You will get this information when you register an account on a Dynamic DNS server. 4.3.5 DHCP Server Press “More>>” The settings of a TCP/IP environment include host IP, Subnet Mask, Gateway, and DNS configurations. It is not easy to manually configure all the computers and devices in your network. Fortunately, DHCP Server provides a rather simple approach to handle all these settings. This product supports the function of DHCP server.
1. DHCP Server: Choose “Disable” or “Enable.” 2. Lease Time: Define the period of time for the IP address leased. 3. IP pool starting Address/ IP pool starting Address: Whenever there is a request, the DHCP server will automatically allocate an unused IP address from the IP address pool to the requesting computer. You must specify the starting and ending address of the IP address pool. 4. Domain Name: Optional, this information will be passed to the client. 5.
4.4 Advanced 4.4.
Discard PING from WAN side When this feature is enabled, any host on the WAN cannot ping this product. SPI Mode When this feature is enabled, the router will record the packet information pass through the router like IP address, port address, ACK, SEQ number and so on. And the router will check every incoming packet to detect if this packet is valid. DoS Attack Detection When this feature is enabled, the router will detect and log the DoS attack comes from the Internet.
controlling of which wireless client can associate to the wireless LAN. If a client is denied to associate to the wireless LAN, it means the client can't send or receive any data via this device. Choose "allow" or "deny" to allow or deny the clients, whose MAC addresses are not in the "Control table", to associate to the wireless LAN. Control table "Control table" is the table at the bottom of the "MAC Address Control" page.
MAC address of the client you select to the ID selected in the “ID” Combobox. Previous page and Next Page To make this setup page simple and clear, we have divided the “Control table” into several pages. You can use these buttons to navigate to different pages. 4.4.3 Packet Filtering Packet Filter enables you to control what packets are allowed to pass the router. Outbound filter applies on all outbound packets.
For source or destination IP address, you can define a single IP address (4.3.2.1) or a range of IP addresses (4.3.2.1-4.3.2.254). An empty implies all IP addresses. For source or destination port, you can define a single port (80) or a range of ports (1000-1999). Add prefix "T" or "U" to specify TCP or UDP protocol. For example, T80, U53, U2000-2999. No prefix indicates both TCP and UDP are defined. An empty implies all port addresses.
(1.2.3.10-1.2.3.20) They can do everything (block nothing) Others are all blocked. Example 2: (1.2.3.100-1.2.3.119) They can do everything except read net news (port 119) and transfer files via FTP (port 21) Others are all allowed. After Inbound Packet Filter setting is configured, click the save button. Outbound Filter: To enable Outbound Packet Filter click the check box next to Enable in the Outbound Packet Filter field.
Example 1: (192.168.1.100-192.168.1.149) They are allowed to send mail (port 25), receive mail (port 110), and browse Internet (port 80); port 53 (DNS) is necessary to resolve the domain name. (192.168.1.10-192.168.1.20) They can do everything (block nothing) Others are all blocked.
Example 2: (192.168.1.100-192.168.1.119) They can do everything except read net news (port 119) and transfer files via FTP (port 21) Others are allowed After Outbound Packet Filter setting is configured, click the save button.
4.4.4 Domain Filtering Domain Filter Let you prevent users under this device from accessing specific URLs. Domain Filter Enable Check if you want to enable Domain Filter. Log DNS Query Check if you want to log the action when someone accesses the specific URLs. Privilege IP Addresses Range Setting a group of hosts and privilege these hosts to access network without restriction. Domain Suffix A suffix of URL to be restricted. For example, ".com", "xxx.com".
Example: In this example: 1. URL include “www.msn.com” will be blocked, and the action will be record in log-file. 2. URL include “www.sina.com” will not be blocked, but the action will be record in log-file. 3. URL include “www.google.com” will be blocked, but the action will not be record in log-file. 4. IP address X.X.X.1~ X.X.X.20 can access network without restriction.
4.4.5 URL Filtering URL Blocking will block LAN computers to connect to pre-defined Websites. The major difference between “Domain filter” and “URL Blocking” is Domain filter require user to input suffix (like .com or .org, etc), while URL Blocking require user to input a keyword only. In other words, Domain filter can block specific website, while URL Blocking can block hundreds of websites by simply a keyword. URL Blocking Enable Checked if you want to enable URL Blocking.
In this example: 1. URL include “msn” will be blocked, and the action will be record in log-file. 2. URL include “sina” will be blocked, but the action will be record in log-file 3. URL include “cnnsi” will not be blocked, but the action will be record in log-file. 4.
4.4.6 Routing Table Routing Tables allow you to determine which physical interface address to use for outgoing IP data grams. If you have more than one routers and subnets, you will need to enable routing table to allow packets to find proper routing path and allow different subnets to communicate with each other. Routing Table settings are settings used to setup the functions of static. Static Routing: For static routing, you can specify up to 8 routing rules.
Example: Configuration on NAT Router Destination SubnetMask Gateway Hop Enabled 192.168.1.0 255.255.255.0 192.168.1.216 1 ˇ 192.168.0.0 255.255.255.0 192.168.1.103 1 ˇ So if, for example, the client3 wanted to send an IP data gram to 192.168.0.2, it would use the above table to determine that it had to go via 192.168.1.103 (a gateway), And if it sends Packets to 192.168.1.11 will go via 192.168.1.216 Each rule can be enabled or disabled individually.
4.4.7 Schedule Rule You can set the schedule time to decide which service will be turned on or off. Select the “enable” item. Press “Add New Rule” You can write a rule name and set which day and what time to schedule from “Start Time” to “End Time”.
After configure Rule 1à Schedule Enable Selected if you want to Enable the Scheduler. Edit To edit the schedule rule. Delete To delete the schedule rule, and the rule# of the rules behind the deleted one will decrease one automatically.
Exanple1: Virtual Server – Apply Rule#1 (ftp time: everyday 14:10 to 16:20) Exanple2: Packet Filter – Apply Rule#1 (ftp time: everyday 14:10 to 16:20).
4.4.8 Virtual Server This product’s NAT firewall filters out unrecognized packets to protect your Intranet, so all hosts behind this product are invisible to the outside world. If you wish, you can make some of them accessible by enabling the Virtual Server Mapping. A virtual server is defined as a Service Port, and all requests to this port will be redirected to the computer specified by the Server IP. Virtual Server can work with Scheduling Rules, and give user more flexibility on Access control.
4.4.9 DMZ IP Address of DMZ Host DMZ (DeMilitarized Zone) Host is a host without the protection of firewall. It allows a computer to be exposed to unrestricted 2-way communication for Internet games, Video conferencing, Internet telephony and other special applications. NOTE: This feature should be used only when needed. Non-standard FTP port You have to configure this item if you want to access an FTP server whose port number is not 21. This setting will be lost after rebooting.
4.4.10 Special AP Some applications require multiple connections, like Internet games, Video conferencing, Internet telephony, etc. Because of the firewall function, these applications cannot work with a pure NAT router. The Special Applications feature allows some of these applications to work with this product. If the mechanism of Special Applications fails to make an application work, try setting your computer as the DMZ host instead. 1. Trigger: the outbound port number issued by the application.. 2.
4.5 Administration 4.5.1 Change Password You can change Password here. We strongly recommend you to change the system password for security reason.
4.5.2 Firmware Upgrade You can upgrade firmware by clicking Firmware Upgrade button. 4.5.3 Backup Setting You can backup your settings by clicking the Backup Setting button and save it as a bin file. Once you want to restore these settings, please click Firmware Upgrade button and use the bin file you saved.
4.5.4 Reset to factory default You can also reset this product to factory default by clicking the Reset to default button. 4.5.5 Reboot You can also reboot this product by clicking the Reboot button. 4.5.
Get Date and Time by NTP Protocol Selected if you want to Get Date and Time by NTP Protocol. Time Server Select a NTP time server to consult UTC time Time Zone Select a time zone where this device locates. Set Date and Time manually Selected if you want to Set Date and Time manually. Set Date and Time manually Selected if you want to Set Date and Time manually. Function of Buttons Sync Now: Synchronize system time with network time server Daylight Saving:Set up where the location is. 4.5.
perform remote administration. If the specified IP address is 0.0.0.0, any host can connect to this product to perform administration task. You can use subnet mask bits "/nn" notation to specified a group of trusted IP addresses. For example, "10.1.2.0/24". NOTE: When Remote Administration is enabled, the web server port will be shifted to 88. You can change web server port to other port, too. Administrator Time-out The time of no activity to logout automatically. Set it to zero to disable this feature. 4.
4.5.9 Diagnostic This is the graphic interface of “Ping” command, you can enter the Domain Name or IP address to ping if it is working. 4.
4.6.1 System Status This item shows the static data of the router, 4.6.
4.6.3 Log Notification This page support two methods to export system logs to specific destination by means of syslog(UDP) and SMTP(TCP). The items you have to setup including: IP Address for Syslog Host IP of destination where syslogs will be sent to. Check Enable to enable this function. E-mail Alert Enable Check if you want to enable Email alert (send syslog via email). SMTP Server IP and Port Input the SMTP server IP and port, which are concated with ':'.
4.6.4 SNMP Setting In brief, SNMP, the Simple Network Management Protocol, is a protocol designed to give a user the capability to remotely manage a computer network by polling and setting terminal values and monitoring network events. Enable SNMP You must check either Local or Remote or both to enable SNMP function. If Local is checked, this device will response request from LAN. If Remote is checked, this device will response request from WAN.
A Appppeennddiixx A A T TC CP P//IIP PC Coonnffiigguurraattiioonn ffoorr W Wiinnddoow wss 9955//9988 This section introduces you how to install TCP/IP protocol into your personal computer. And suppose you have been successfully installed one network card on your personal computer. If not, please refer to your network card manual. Moreover, the Section B.2 tells you how to set TCP/IP values for working with this NAT Router correctly. A.1 Install TCP/IP Protocol into Your PC 1.
6. The TCP/IP protocol shall be listed in the Network window. Click OK to complete the install procedure and restart your PC to enable the TCP/IP protocol. A.2 Set TCP/IP Protocol for Working with NAT Router 1. Click Start button and choose Settings, then click Control Panel. 2. Double click Network icon. Select the TCP/IP line that has been associated to your network card in the Configuration tab of the Network window. 3. Click Properties button to set the TCP/IP protocol for this NAT Router. 4.
a. Select Obtain an IP address automatically in the IP Address tab. b. Don’t input any value in the Gateway tab.
c. Choose Disable DNS in the DNS Configuration tab. B. Configure IP manually a. Select Specify an IP address in the IP Address tab. The default IP address of this product is 192.168.1.254. So please use 192.168.1.xxx (xxx is between 1 and 253) for IP Address field and 255.255.255.0 for Subnet Mask field.
b. In the Gateway tab, add the IP address of this product (default IP is 192.168.1.254) in the New gateway field and click Add button. c. In the DNS Configuration tab, add the DNS values which are provided by the ISP into DNS Server Search Order field and click Add button.
A Appppeennddiixx B B 880022..11xx SSeettttiinngg Figure 1: Testing Environment (Use Windows 2000 Radius Server) 1 Equipment Details PC1: Microsoft Windows XP Professional without Service Pack 1. D-Link DWL-650+ wireless LAN adapter Driver version: 3.0.5.0 (Driver date: 03.05.2003) PC2: Microsoft Windows XP Professional with Service Pack 1a. Z-Com XI-725 wireless LAN USB adapter Driver version: 1.7.29.0 (Driver date: 10.20.
1.Enable DHCP server. 2.WAN setting: static IP address. 3.LAN IP address: 192.168.1.254/24. 4.Set RADIUS server IP. 5.Set RADIUS server shared key. 6.Configure WEP key and 802.1X setting. The following test will use the inbuilt 802.1X authentication method such as ,EAP_TLS, PEAP_CHAPv2(Windows XP with SP1 only), and PEAP_TLS(Windows XP with SP1 only) using the Smart Card or other Certificate of the Windows XP Professional. 3. DUT and Windows 2000 Radius Server Setup 3-1-1.
4. We will change EAP type to fit the variable test condition. Figure 2: Enable IEEE 802.
Figure 3: Smart card or certificate properties 4. Windows 2000 RADIUS server Authentication testing: 4.1DUT authenticate PC1 using certificate. (PC2 follows the same test procedures.) 1. Download and install the certificate on PC1. (Fig 4) 2. PC1 choose the SSID of DUT as the Access Point. 3. Set authentication type of wireless client and RADIUS server both to EAP_TLS. 4. Disable the wireless connection and enable again. 5.
Figure 4: Certificate information on PC1 Figure 5: Authenticating 59
Figure 6: Authentication success 4.2DUT authenticate PC2 using PEAP-TLS. 1. PC2 choose the SSID of DUT as the Access Point. 2. Set authentication type of wireless client and RADIUS server both to PEAP_TLS. 3. Disable the wireless connection and enable again. 4.The DUT will send the user's certificate to the RADIUS server, and then send the message of authentication result to PC2. 5. Windows XP will prompt that the authentication process is success or fail and end the authentication procedure. 6.
A Appppeennddiixx C C W WP PA A--P PSSK K aanndd W WP PA A Wireless Router: LAN IP: 192.168.123.254 WAN IP: 192.168.122.216 Radius Server: 192.168.122.1 UserA : XP Wireless Card:Ti-11g Tool: Odyssey Client Manager Refer to: www.funk.com Download: http://www.funk.com/News&Events/ody_c_wpa_preview_pn.
Or Another Configuration: WPA-PSK In fact, it is not necessary for this function to authenticate by Radius Server, the client and wireless Router authenticate by themselves. Method1: 1. Go to the Web manager of Wireless Router to configure, like below: 2. Go to Odyssey Client Manager, first choose “Network” Before doing that, you should verify if the software can show the wireless card.
3.
4. Back to Connection: Then Select “Connect to network” You will see: Method2: 1. First, patch windows XP and have to install “Service package 1” Patch: http://www.microsoft.com/downloads/details.aspx?displaylang=en&FamilyID=5039ef4a-61e0 -4c44-94f0-c25c9de0ace9 2. Then reboot. 3. Setting on the router and client: Router: Client: Go to “Network Connection” and select wireless adapter.
Choose “View available Wireless Networks” like below: Advancedà choose “1kk” 65
WPA: For this function, we need the server to authenticate. This function is like 802.1x. The above is our environment: Method 1: 1. The UserA or UserB have to get certificate from Radius, first. http://192.168.122.1/certsrv account : fae1 passwd : fae1 2. Then, Install this certificate and finish. 3.
4. Go to Odyssey Client Manager, choose “Profiles” and Setup Profile name as “1” Login name and passwd are fae1 and fae1. Remember that you get certificate from Radius in Step1.
5. Then Choose “certificate” like above.
6. Then go to Authentication and first Remove EAP/ TLS and Add EAP/TLS again.
7.
8. Back to Connection and Select “1kk. If successfully, the wireless client has to authenticate with Radius Server, like below: 9.Result: Method 2: 1. The UserA or UserB have to get certificate from Radius,first. http://192.168.122.
2. Then Install this certificate and finish. 3.
Client: Go to “Network Connection” and select wireless adapter. Choose “View available Wireless Networks” like below: Advancedà choose “1kk” Select “WirelessCA and Enable” in Trusted root certificate authority: Then, if the wireless client wants to associate, it has to request to authenticate.
A Appppeennddiixx D D F FA AQ Q aanndd T Trroouubblleesshhoooottiinngg Reset to factory Default There are 2 methods to reset to default. 1. Restore with RESET button First, turn off the router and press the RESET button in. And then, power on the router and push the RESET button down until the M1 and or M2 LED (or Status LED) start flashing, then remove the finger. If LED flashes about 8 times, the RESTORE process is completed. However, if LED flashes 2 times, repeat. 2.
A Appppeennddiixx E E P Prroodduucctt SSppeecciiffiiccaattiioonn Hardware and Port Characteristic CPU AMRISC 10100 Memory Flash 1MB, DRAM 2MB LAN Port 4 x RJ45, 10/100 Mbps with Auto-MDI/MDIX WAN Port 1 x RJ45, 10/100 Mbps with Auto-MDI/MDIX Input Power AC 12V1A Operational & Functional Characteristic Firmware Platform MSI Proprietary Kernel Management Method Web-based Static IP Address Dynamic IP Address (DHCP Client) Supported WAN Type PPP over Ethernet Multi-session PPP over Ethernet (F
Email Alert VPN Supporting IPSec, PPTP, LT2P Pass-Through Routing Static Route Upgrade Method Web-based Windows Application DDNS Supported Other Features UPnP Supported SNMP Supported Wireless Support Standard IEEE 802.11b / 802.11g Data Rate* 6/12/18/24/36/48/54Mbps in 802.11g mode 1/2/5.5/11Mbps in 802.11b mode Operating Frequency 2.4GHz Range Coverage Per cell indoors approx.
