A
Troubleshooting
This appendix provides solutions to problems that may occur during the installation and operation of the router. Read the descriptions below to help solve your problems. If you can’t find an answer here, check the Cisco website at www.cisco.com
.
I need to set a static IP address on a PC.
The router, by default, assigns an IP address range of 192.168.1.100 to
192.168.1.149 using the DHCP server on the router. To set a static IP address, you can only use the ranges 192.168.1.2 to 192.168.1.99 and 192.168.1.150 to
192.168.1.254. Each PC or network device that uses TCP/IP must have a unique address to identify itself in a network. If the IP address is not unique to a network,
Windows will generate an IP conflict error message. You can assign a static IP address to a PC by performing the following steps:
Windows 2000
STEP 1 Click Start, Settings, and Control Panel. Double-click Network and Dial-Up
Connections.
STEP 2 Right-click the Local Area Connection that is associated with the Ethernet adapter you are using, and click Properties.
STEP 3 In the “Components checked are used by this connection” box, select Internet
Protocol (TCP/IP), and click Properties. Select Use the following IP address.
STEP 4 Enter a unique IP address that is not used by any other computer on the network connected to the router. You can only use an IP address in the ranges 192.168.1.2 to 192.168.1.99 and 192.168.1.151 to 192.168.1.254.
STEP 5 Enter the Subnet Mask, 255.255.255.0.
STEP 6 Enter the Default Gateway, 192.168.1.1 (Router’s default IP address).
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STEP 7 Select Use the following DNS server addresses, and enter the Preferred DNS server and Alternative DNS server (provided by your ISP). Contact your ISP or go on its website to find the information.
STEP 8 Click OK in the Internet Protocol (TCP/IP) Properties window, and click OK in the
Local Area Connection Properties window.
STEP 9 Restart the computer if asked.
Windows XP
STEP 1 Click Start and Control Panel.
STEP 2 Click the Network and Internet Connections icon and then the Network
Connections icon.
STEP 3 Right-click the Local Area Connection associated with your Ethernet adapter, and click Properties.
STEP 4 In the This “connection uses the following items” box, select Internet Protocol
(TCP/IP). Click Properties.
STEP 5 Select Use the following IP address, and enter a unique IP address that is not used by any other computer on the network connected to the router. You can only use an IP address in the ranges 192.168.1.2 to 192.168.1.99 and 192.168.1.151 to
192.168.1.254.
STEP 6 Enter the Subnet Mask, 255.255.255.0.
STEP 7 Enter the Default Gateway, 192.168.1.1 (Router’s default IP address).
STEP 8 Select Use the following DNS server addresses, and enter the Preferred DNS server and Alternative DNS server (provided by your ISP). Contact your ISP or go on its website to find the information.
STEP 9 Click OK in the Internet Protocol (TCP/IP) Properties window. Click OK in the Local
Area Connection Properties window.
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I want to test my Internet connection.
STEP 1 Check your TCP/IP settings.
Windows 2000
a. Click Start, Settings, and Control Panel. Double-click Network and Dial-Up
Connections.
b. Right-click the Local Area Connection that is associated with the Ethernet adapter you are using, and click Properties. c. In the “Components checked are used by this connection” box, select Internet
Protocol (TCP/IP), and click Properties. Make sure that Obtain an IP address
automatically and Obtain DNS server address automatically are selected.
d. Click OK in the Internet Protocol (TCP/IP) Properties window, and click OK in the Local Area Connection Properties window.
e. Restart the computer if asked.
Windows XP
The following instructions are for the default interface of Windows XP. If you are using the Classic interface (the icons and menus look like previous Windows versions), please follow the instructions for Windows 2000.
a. Click Start and Control Panel.
b. Click the Network and Internet Connections icon and then the Network
Connections icon.
c. Right-click the Local Area Connection associated with your Ethernet adapter, and click Properties.
d. In the “This connection uses the following items” box, select Internet Protocol
(TCP/IP) and click Properties. Make sure that Obtain an IP address
automatically and Obtain DNS server address automatically are selected.
STEP 2 Open a command prompt: a. Windows 98 and Millennium: Click Start and Run. In the Open field, type
command. Press Enter or click OK.
b. Windows 2000 and XP: Click Start and Run. In the Open field, type cmd. Press
Enter or click OK.
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STEP 3 At the command prompt, type ping 192.168.1.1 and press Enter.
• If you get a reply, the computer is communicating with the router.
STEP 4
• If you do NOT get a reply, check the cable, and make sure Obtain an IP
address automatically is selected in the TCP/IP settings for your Ethernet adapter.
At the command prompt, type ping followed by your Internet IP address and press
Enter. The Internet IP Address can be found in the web interface of the router. For example, if your Internet IP address is 1.2.3.4, you would enter ping 1.2.3.4 and press Enter.
• If you get a reply, the computer is connected to the router.
• If you do NOT get a reply, try the ping command from a different computer to verify that your original computer is not the cause of the problem.
STEP 5 At the command prompt, type ping www.cisco.com and press Enter.
• If you get a reply, the computer is connected to the Internet. If you cannot open a web page, try the ping command from a different computer to verify that your original computer is not the cause of the problem.
• If you do NOT get a reply, there may be a problem with the connection. Try the ping command from a different computer to verify that your original computer is not the cause of the problem.
I am not getting an IP address on the Internet with my Internet connection.
STEP 1 Refer to
“I want to test my Internet connection.” on page 188
above to verify that you have connectivity.
STEP 2 If you need to clone the MAC address of your Ethernet adapter onto the router, see the MAC Address Clone section of Chapter 5, “Setting Up and Configuring the
Router” for details.
STEP 3 Make sure you are using the right Internet settings. Contact your ISP to see if your
Internet connection type is DHCP, Static IP Address, or PPPoE (commonly used by
DSL consumers). Please refer to the Basic Setup section of Chapter 5, “Setting
Up and Configuring the Router” for details on Internet Connection Type settings.
STEP 4 Make sure you use the right cable. Check to see if the Internet LED is solidly lit.
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STEP 5 Make sure the cable connecting from your cable or DSL modem is connected to the router’s Internet port. Verify that the Status page of the router’s web-based utility shows a valid IP address from your ISP.
STEP 6 Turn off the computer, router, and cable/DSL modem. Wait 30 seconds, and then turn on the router, cable/DSL modem, and computer. Check System > Summary from the router’s web-based utility to see if you get an IP address.
I am not able to access the router’s web-based utility Setup window.
STEP 1
Refer to “I want to test my Internet connection.,” on page 188 to verify that your
computer is properly connected to the router.
STEP 2 Verify that your computer has an IP Address, Subnet Mask, Gateway, and DNS.
STEP 3
Set a static IP address on your system; refer to “I need to set a static IP address on a PC.” on page 186
above.
STEP 4 Refer to
“I am a PPPoE user and I need to remove the proxy settings or the dial-up pop-up window.,” on page 194
.
I can’t get my Virtual Private Network (VPN) to work through the router.
Access the router’s web interface by going to http://192.168.1.1 or the IP address of the router, and go to VPN > VPN Pass Through. Make sure you have
IPSec passthrough and/or PPTP passthrough enabled.
VPNs that use IPSec with the ESP (Encapsulation Security Payload known as protocol 50) authentication will work fine. At least one IPSec session will work through the router; however, simultaneous IPSec sessions may be possible, depending on the specifics of your VPNs.
VPNs that use IPSec and AH (Authentication Header known as protocol 51) are incompatible with the router. AH has limitations due to occasional incompatibility with the NAT standard.
Change the IP address for the router to another subnet to avoid a conflict between the VPN IP address and your local IP address. For example, if your VPN server assigns an IP address 192.168.1.X (X is a number from 1 to 254) and your local
LAN IP address is 192.168.1.X (X is the same number used in the VPN IP address), the router will have difficulties routing information to the right location. If you change the router’s IP address to 192.168.2.1, that should solve the problem.
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Change the router’s IP address through the Setup menu of the web-based utility. If you assigned a static IP address to any computer or network device on the network, you need to change its IP address accordingly to 192.168.2.Y (Y being any number from 1 to 254). Note that each IP address must be unique within the network. Your VPN may require port 500/UDP packets to be passed to the computer that is connecting to the IPSec server. Check the Cisco website at www.cisco.com
for more information.
I need to set up a server behind my router.
To use a server like a web, ftp, or mail server, you need to know the respective port numbers they are using. For example, port 80 (HTTP) is used for web; port 21
(FTP) is used for FTP, and port 25 (SMTP outgoing) and port 110 (POP3 incoming) are used for the mail server. You can get more information by viewing the documentation provided with the server you installed. Follow these steps to set up port forwarding through the router’s web-based utility. We will be setting up web, ftp, and mail servers.
STEP 1 Access the router’s web-based utility by going to http://192.168.1.1 or the IP address of the router. Go to Firewall > Single Port Forwarding.
STEP 2 Select the Service from the Application column.
STEP 3 Enter the IP Address of the server that you want the Internet users to access. For example, if the web server’s Ethernet adapter IP address is 192.168.1.100, you would enter 100 in the field provided. Then check the Enable checkbox for the entry. Consider the examples below:
Application
HTTP
FTP
SMTP
(Outgoing)
POP3
(Incoming)
Start and End
80 to 80
21 to 21
25 to 25
110 to 110
Protocol
Both
TCP
Both
Both
IP Address
192.168.1.100
192.168.1.101
192.168.1.102
192.168.1.102
Enable
X
X
X
X
STEP 4 Configure as many entries as you like.
STEP 5 When you have completed the configuration, click Save Settings.
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I can’t get an Internet game, server, or application to work.
If you are having difficulties getting any Internet game, server, or application to function properly, consider exposing one PC to the Internet using DeMilitarized
Zone (DMZ) hosting. This option is available when an application requires too many ports or when you are not sure which port services to use. Make sure you disable all the forwarding entries if you want to successfully use DMZ hosting, since forwarding has priority over DMZ hosting. (In other words, data that enters the router will be checked first by the forwarding settings. If the port number that the data enters from does not have port forwarding, then the router will send the data to whichever PC or network device you set for DMZ hosting.) Follow these steps to set DMZ hosting:
STEP 1 Access the router’s web-based utility by going to http://192.168.1.1 or the IP address of the router. Go to the Firewall > Single Port Forwarding.
STEP 2 Disable the entries you have entered for forwarding.
STEP 3 Go to Setup > DMZ.
STEP 4 Enter the Ethernet adapter’s IP address of the computer you want exposed to the
Internet. This will bypass the NAT security for that computer.
STEP 5 Select Enable to enable DMZ Hosting.
STEP 6 When you have completed the configuration, click Save Settings.
I need to set up online game hosting or use other Internet applications.
If you want to play online games or use Internet applications, most will work without doing any port forwarding or DMZ hosting. There may be cases when you want to host an online game or Internet application. This would require you to set up the router to deliver incoming packets or data to a specific computer. This also applies to the Internet applications you are using. The best way to get the information on what port services to use is to go to the website of the online game or application you want to use. Follow these steps to set up online game hosting or use a certain Internet application:
STEP 1 Access the router’s web-based utility by going to http://192.168.1.1 or the IP address of the router. Go to Firewall > Single Port Forwarding.
STEP 2 Select the Service from the Application column.
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STEP 3 Enter the IP Address of the server that you want the Internet users to access. For example, if the web server’s Ethernet adapter IP address is 192.168.1.100, you would enter 100 in the field provided. Then check the Enable checkbox for the entry. Consider the examples below:
Application
UT
Halflife
PC Anywhere
VPN IPSEC
Start and End
7777 to 27900
27015 to 27015
5631 to 5631
500 to 500
Protocol
Both
Both
UDP
UDP
IP Address
192.168.1.100
192.168.1.105
192.168.1.102
192.168.1.100
STEP 4 Configure as many entries as you like.
STEP 5 When you have completed the configuration, click Save Settings.
Enable
X
X
X
X
I forgot my password or the password prompt always appears when saving settings to the router.
Reset the router to factory defaults by pressing the Reset button for ten seconds and then releasing it. If you are still getting prompted for a password when saving settings, then perform the following steps:
STEP 1 Access the router’s web interface by going to http://192.168.1.1 or the IP address of the router. Enter the default password admin, and click Administration >
Management.
STEP 2 Enter the old password in the Old Password field.
STEP 3 Enter a different password in the New Password field, and enter the new password in the Confirm New Password field to confirm the password.
STEP 4 Click Save Settings.
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I am a PPPoE user and I need to remove the proxy settings or the dial-up pop-up window.
If you have proxy settings, you need to disable these on your computer. Because the router is the gateway for the Internet connection, the computer does not need any proxy settings to gain access. Please follow these directions to verify that you do not have any proxy settings and that the browser you use is set to connect directly to the LAN.
For Microsoft Internet Explorer 5.0 or higher:
STEP 1 Click Start, Settings, and Control Panel. Double-click Internet Options.
STEP 2 Click the Connections tab.
STEP 3 Click LAN settings and remove anything that is checked.
STEP 4 Click OK to go back to the previous window.
STEP 5 Click the option Never dial a connection. This will remove any dial-up pop-ups for
PPPoE users.
For Netscape 4.7 or higher:
STEP 1 Start Netscape Navigator, and click Edit, Preferences, Advanced, and Proxies.
STEP 2 Make sure you have Direct connection to the Internet selected on this window.
STEP 3 Close all the windows to finish.
To start over, I need to set the router to factory default.
Hold the Reset button for up to 30 seconds and then release it. This will return the password, forwarding, and other settings on the router to the factory default settings. In other words, the router will revert to its original factory configuration.
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I need to upgrade the firmware.
In order to upgrade the firmware with the latest features, you need to go to the
Cisco website and download the latest firmware. For the firmware download link, see Appendix G, “Where to Go From Here.” Follow these steps:
STEP 1 Go to the Cisco website and download the latest firmware. For the firmware download link, see Appendix G, “Where to Go From Here.” From the firmware download link, click Download Software. Select the router from the menu and choose the firmware from the options.
STEP 2 Extract the firmware file on your computer.
STEP 3 To upgrade the firmware, follow the steps in the Upgrade section found in
Chapter 5, “Setting Up and Configuring the Router.”
The firmware upgrade failed.
The upgrade could have failed for a number of reasons. Use the WRVS4400N
Firmware Upgrade Utility to upgrade the firmware. Follow these steps to upgrade the firmware:
STEP 1 Go to the Cisco website at www.cisco.com
and download WRVS4400N Firmware
Upgrade Utility v1.3, which will be listed with the firmware. Save the zip file to your computer.
STEP 2 Extract the file setup.exe from the zip file, then run setup.exe to install the utility on your computer.
STEP 3 Disconnect the network cables from all of the router’s LAN and WAN ports, except the network cable to the computer that has the firmware upgrade utility.
STEP 4 Run the utility by clicking Start, All Programs, Cisco Small Business, RVS4400N
Upgrade Utility, RVS4400N Upgrade Utility, or by double-clicking the icon on your desktop.
STEP 5 Follow the on-screen instructions to perform the upgrade.
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My DSL service’s PPPoE is always disconnecting.
PPPoE is not actually a dedicated or always-on connection. The DSL ISP can disconnect the service after a period of inactivity, just like a normal phone dial-up connection to the Internet. There is a setup option to “keep alive” the connection.
This may not always work, so you may need to re-establish connection periodically.
STEP 1 To connect to the router, go to the web browser, and enter http://192.168.1.1 or the IP address of the router.
STEP 2 Enter the password, if asked (default password is admin).
STEP 3 On the Setup > WAN menu, select the option Keep Alive, and set the Redial
Period option at 20 (seconds).
STEP 4 Click Save Settings.
If the connection is lost again, follow steps 1 and 2 to re-establish connection.
I can’t access my e-mail, web, or VPN, or I am getting corrupted data from the Internet.
The Maximum Transmission Unit (MTU) setting may need to be adjusted. By default, the MTU is set at 1500. For most DSL users, it is strongly recommended to use MTU 1492. If you are having difficulties, perform the following steps:
STEP 1 To connect to the router, go to the web browser, and enter http://192.168.1.1 or the IP address of the router.
STEP 2 Enter the password, if asked (the default password is admin).
STEP 3 Go to the Setup > WAN menu.
STEP 4 Look for the MTU option, and select Manual. In the Size field, enter 1492.
STEP 5 Click Save Settings to continue.
If your difficulties continue, change the Size to different values. Try this list of values, one value at a time, in this order, until your problem is solved: 1462, 1400,
1362, and 1300.
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I need to use port triggering.
Port triggering looks at the outgoing port services used and will trigger the router to open a specific port, depending on which port an Internet application uses.
Follow these steps:
STEP 1 To connect to the router, go to the web browser, and enter http://192.168.1.1 or the IP address of the router.
STEP 2 Enter the password, if asked (the default password is admin).
STEP 3 Click Firewall > Port Range Triggering.
STEP 4 Enter any name you want to use for the Application Name.
STEP 5 Enter the Start and End Ports of the Triggered Range. Check with your Internet application provider for more information on which outgoing port services it is using.
STEP 6 Enter the Start and End Ports of the Forwarded Range. Check with your Internet application provider for more information on which incoming port services are required by the Internet application.
STEP 7 Check the Enabled checkbox for the entry.
STEP 8 When you have completed the configuration, click Save Settings.
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When I enter a URL or IP address, I get a time-out error or am prompted to retry.
• Check if other PCs work. If they do, ensure that your workstation’s IP settings are correct (IP Address, Subnet Mask, Default Gateway, and DNS).
Restart the computer that is having a problem.
• If the PCs are configured correctly, but still not working, check the router.
Ensure that it is connected and powered on. Connect to it and check its settings. (If you cannot connect to it, check the LAN and power connections.)
• If the router is configured correctly, check your Internet connection (DSL/ cable modem, etc.) to see if it is working correctly. You can remove the router to verify a direct connection.
• Manually configure the TCP/IP with a DNS address provided by your ISP.
• Make sure that your browser is set to connect directly and that any dial-up is disabled. For Internet Explorer, click Tools, Internet Options, and then the
Connection tab. Make sure that Internet Explorer is set to Never dial a
connection. For Netscape Navigator, click Edit, Preferences, Advanced, and Proxy. Make sure that Netscape Navigator is set to Direct connection
to the Internet.
I’m trying to access the router’s web-based utility but I do not see the login window. Instead, I see a window saying, “404 Forbidden.”
If you are using Windows Explorer, perform the following steps until you see the web-based utility’s login window (Netscape Navigator will require similar steps):
STEP 1 Click File. Make sure Work Offline is NOT checked.
STEP 2 Press CTRL + F5. This is a hard refresh, which will force Windows Explorer to load new web pages, not cached ones.
STEP 3 Click Tools. Click Internet Options. Click the Security tab. Click the Default level button. Make sure the security level is Medium or lower. Then click the OK button.
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Frequently Asked Questions
A
Frequently Asked Questions
Q. What is the maximum number of IP addresses that the router will support?
The router will support up to 253 IP addresses.
Q. Is IPSec Passthrough supported by the router?
Yes, enable or disable IPSec Passthrough on the VPN > VPN Pass Through window.
Q. Where is the router installed on the network?
In a typical environment, the router is installed between the cable/DSL modem and the LAN. Plug the router into the cable/DSL modem’s Ethernet port.
Q. Does the router support IPX or AppleTalk?
No. TCP/IP is the only protocol standard for the Internet and has become the global standard for communications. IPX, a NetWare communications protocol used only to route messages from one node to another, and AppleTalk, a communications protocol used on Apple and Macintosh networks, can be used for
LAN to LAN connections, but those protocols cannot connect from the Internet to the LAN.
Q. What is Network Address Translation and what is it used for?
Network Address Translation (NAT) translates multiple IP addresses on the private
LAN to one public address that is sent out to the Internet. This adds a level of security since the address of a PC connected to the private LAN is never transmitted on the Internet. Furthermore, NAT allows the router to be used with low cost Internet accounts, such as DSL or cable modems, when only one TCP/IP address is provided by the ISP. The user may have many private addresses behind this single address provided by the ISP.
Q. Does the router support any operating system other than Windows 98,
Millennium, 2000, or XP?
Yes, but Cisco does not, at this time, provide technical support for setup, configuration or troubleshooting of any non-Windows operating systems.
Q. Does the router support ICQ send file?
Yes, with the following fix: click ICQ menu => preference => connections tab=>, and check I am behind a firewall or proxy. Then set the firewall time-out to 80 seconds in the firewall setting. The Internet user can then send a file to a user behind the router.
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Frequently Asked Questions
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Q. I set up an Unreal Tournament Server, but others on the LAN cannot join. What do I need to do?
If you have a dedicated Unreal Tournament server running, you need to create a static IP for each of the LAN computers and forward ports 7777, 7778, 7779, 7780,
7781, and 27900 to the IP address of the server. You can also use a port forwarding range of 7777 to 27900. If you want to use the UT Server Admin, forward another port (8080 usually works well but is used for remote admin; you may have to disable this), and then in the [UWeb.WebServer] section of the server.ini file, set the ListenPort to 8080 (to match the mapped port above) and
ServerName to the IP assigned to the router from your ISP.
Q. Can multiple gamers on the LAN get on one game server and play simultaneously with just one public IP address?
It depends on which network game or what kind of game server you are using. For example, Unreal Tournament supports multi-login with one public IP.
Q. How do I get Half-Life: Team Fortress to work with the router?
The default client port for Half-Life is 27005. The computers on your LAN need to have “+clientport 2700x” added to the HL shortcut command line; the x would be
6, 7, 8, and on up. This lets multiple computers connect to the same server. One problem: Version 1.0.1.6 won’t let multiple computers with the same CD key connect at the same time, even if on the same LAN (not a problem with 1.0.1.3). As far as hosting games, the HL server does not need to be in the DMZ. Just forward port 27015 to the local IP address of the server computer.
Q. How can I block corrupted FTP downloads?
If you are experiencing corrupted files when you download a file with your FTP client, try using another FTP program.
The web page hangs; downloads are corrupt, or nothing but junk characters are being displayed on the window. What do I need to do?
Force your Ethernet adapter to 10 Mbps or half duplex mode, and turn off the
“Auto-negotiate” feature of your Ethernet adapter as a temporary measure.
(Please look at the Network Control Panel in your Ethernet adapter’s Advanced
Properties tab.) Make sure that your proxy setting is disabled in the browser.
Check our website at www.cisco.com
for more information.
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Frequently Asked Questions
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Q. If all else fails in the installation, what can I do?
Reset the router by holding down the Reset button for ten seconds. Reset your cable or DSL modem by powering the unit off and then on. Obtain and flash the latest firmware release that is readily available on the Cisco website at www.cisco.com
.
Q. How can I be notified of new router firmware upgrades?
All Cisco firmware upgrades are posted on the Cisco website at www.cisco.com
, where they can be downloaded for free. The router’s firmware can be upgraded using the web-based utility. If the router’s Internet connection is working well, there is no need to download a newer firmware version, unless that version contains new features that you would like to use. Downloading a more current version of router firmware will not enhance the quality or speed of your Internet connection, and may disrupt your current connection stability.
Q. Will the router function in a Macintosh environment?
Yes, but the router’s setup pages are accessible only through Internet Explorer 5.0 or Netscape Navigator 5.0 or higher for Macintosh.
Q. I am not able to get the web configuration window for the router. What can I do?
You may have to remove the proxy settings on your Internet browser, e.g.,
Netscape Navigator or Internet Explorer. Or remove the dial-up settings on your browser. Check with your browser documentation, and make sure that your browser is set to connect directly and that any dial-up is disabled. Make sure that your browser is set to connect directly and that any dial-up is disabled. For
Internet Explorer, click Tools, Internet Options, and then the Connection tab. Make sure that Internet Explorer is set to Never dial a connection. For Netscape
Navigator, click Edit, Preferences, Advanced, and Proxy. Make sure that Netscape
Navigator is set to Direct connection to the Internet.
Q. What is DMZ Hosting?
Demilitarized Zone (DMZ) allows one IP address (computer) to be exposed to the
Internet. Some applications require multiple TCP/IP ports to be open. It is recommended that you set your computer with a static IP if you want to use DMZ
Hosting.
Q. If DMZ Hosting is used, does the exposed user share the public IP with the router?
No.
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Frequently Asked Questions
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Q. Does the router pass PPTP packets or actively route PPTP sessions?
The router allows PPTP packets to pass through.
Q. Is the router cross-platform compatible?
Any platform that supports Ethernet and TCP/IP is compatible with the router.
Q. How many ports can be simultaneously forwarded?
Theoretically, the router can establish 2,048 sessions at the same time, but you can only forward 30 ranges of ports.
Q. Does the router replace a modem? Is there a cable or DSL modem in the router?
No, this version of the router must work in conjunction with a cable or DSL modem.
Q. Which modems are compatible with the router?
The router is compatible with virtually any cable or DSL modem that supports
Ethernet.
Q. How can I check whether I have static or DHCP IP addresses?
Ask your ISP to find out.
Q. How do I get mIRC to work with the router?
From the Firewall > SIngle Port Forwarding menu, set port forwarding to 113 for the PC on which you are using mIRC.
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