Two Ports
2010
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 DUAL TWO 2 RS232 9 PIN PORTS SERIAL PCI EXPANSION CARD $6.49 Time Remaining: 26d 4h 58m Buy It Now for only: $6.49 |
 STARTECHCOM TWO 16C550 SERIAL ONE EPP PARALLEL PORT PCI COMBO CARD $14.99 Time Remaining: 3d 1h 48m |
 Two Ports 1394B + One Port 1394A Firewire PCI E TI Card $30.99 Time Remaining: 22d 21h Buy It Now for only: $30.99 |
 Used Cisco FEIP2 DSW 2TX with two fast ethernet ports rj45 $49.99 Time Remaining: 6d 9h 18m Buy It Now for only: $49.99 |
 Add two Hi speed long range RS422 485 Serial Ports PCI card increase speed $22.99 Time Remaining: 9d 1h 20m Buy It Now for only: $22.99 |
 CABLES TO GO PORT AUTHORITY2 TWO PORT KVM SWITCH WITH CABLES 35557 $59.99 Time Remaining: 28d 1h 5m Buy It Now for only: $59.99 |
 Silicom Two Port SX Multimode Fiber GigE PCI X Card PXG2BPFi $59.99 Time Remaining: 1d 18h 26m Buy It Now for only: $59.99 |
 J Tech Digital USB 30 Two Port Express Card 5Gb S JTD UH302E $24.98 Time Remaining: 27d 21h 32m Buy It Now for only: $24.98 |
 5PCs TSB41AB2 IEEE 1394a 2000 Two Port Transceiver $16.80 Time Remaining: 25d 17h 14m Buy It Now for only: $16.80 |
 USB 30 two Ports 34 54mm Interface Express Card $24.69 Time Remaining: 7d 11h 35m Buy It Now for only: $24.69 |
 Two USB Ports Big Fan Black Portable Notebook Cooling Pad Laptop Silent $5.99 Time Remaining: 29d 9h 18m Buy It Now for only: $5.99 |
 Cisco VIC 2FXS Two Port Voice Interface Card $34.99 Time Remaining: 25d 22h 57m Buy It Now for only: $34.99 |
 Manhattan SATA 150 RAID Controller PCI Card two internal ports $18.99 Time Remaining: 14d 1h 34m Buy It Now for only: $18.99 |
 DELL TOE 2 TWO PORT TOE KEY TCP OFFLOAD ENGINE ADAPTER FG027 $8.95 Time Remaining: 23d 6m Buy It Now for only: $8.95 |
 TWO PCI E ATI 109 A62931 01 128MB PCI E PCI Express Video Cards with DVI Ports $9.99 Time Remaining: 5d 5h 34m Buy It Now for only: $9.99 |
 NEW SIIG PCI ADAPTER W TWO SERIAL ONE PARALLEL PORT 2S1P JJ P21111 S4 $19.95 Time Remaining: 2d 4h 2m Buy It Now for only: $19.95 |
 Two Port USB Card $5.99 Time Remaining: 21d 23h 47m Buy It Now for only: $5.99 |
 Siig Add two Internal SATA ports PCI Card $5.00 Time Remaining: 4d 3h 47m |
 DUAL TWO 2 RS232 9 PIN PORTS SERIAL PCI EXPANSION CARD $5.99 Time Remaining: 14d 21h 51m Buy It Now for only: $5.99 |
 PCI To Two COM Ports Controller Card MCS9835CV chipset $19.85 Time Remaining: 29d 7h 28m Buy It Now for only: $19.85 |
 Add two external SATA ports to any desktop PC with PCI Express slot 2 e SATA $17.99 Time Remaining: 23d 4h 25m Buy It Now for only: $17.99 |
 TSB41AB2 IEEE 1394a 2000 Two Port Transceiver $5.10 Time Remaining: 16d 8h 13m Buy It Now for only: $5.10 |
 Manhattan Serial PCI Card 158213 Two External DB9 Ports $8.00 Time Remaining: 5d 20h 19m Buy It Now for only: $8.00 |
 Toshiba Satellite A505 USB Port Cable Ports Two 6017B0195001 $2.80 Time Remaining: 10d 1h 13m Buy It Now for only: $2.80 |
 Two Serial RS232 DB9 and 1 Parallel Port LPT1 DB25 PCI Express PCIe Card $17.99 Time Remaining: 8d 5h 3m Buy It Now for only: $17.99 |
 FastPoint FTG Data Interface Card w sync Pen port two FX 421 Light Pens $89.99 Time Remaining: 12d 7h 28m Buy It Now for only: $89.99 |
 Quatech DS 100 Two Port Serial Interface Card EISA $9.99 Time Remaining: 9d 2h 12m Buy It Now for only: $9.99 |
 A Pair of Two Port USB Cards MP 861 02 $9.99 Time Remaining: 10d 25m Buy It Now for only: $9.99 |
 Two Serial RS232 DB9 and 1 Parallel Port LPT1 DB25 PCI Express PCIe Card $19.99 Time Remaining: 23d 4h 25m Buy It Now for only: $19.99 |
 PCI To Two COM Male Ports Controller Card MCS9835CV chips New $19.84 Time Remaining: 23d 20h 16m Buy It Now for only: $19.84 |
 HP G60 Laptop Speakers 496829 8K0940 with two USB Ports 554BRD33001 $13.49 Time Remaining: 25d 12m Buy It Now for only: $13.49 |
 PCI To Two COM Ports Controller Card MCS9835CV chipset $19.82 Time Remaining: 16d 22h 39m Buy It Now for only: $19.82 |
 PCI To Two COM Male Ports Controller Card MCS9835CV chips New $19.68 Time Remaining: 23d 12h 22m Buy It Now for only: $19.68 |
 USB 30 PCI E Express Card w TWO PORT Super Speed NEW $12.99 Time Remaining: 18d 16h 45m Buy It Now for only: $12.99 |
 Adaptec Firewire AFW 4300 card 3 ports with two 2 1394 cables combo $4.99 Time Remaining: 5d 5h 32m Buy It Now for only: $8.99 |
 Lot of 45 USB 30 Two Port Front Panel 20 Pin usb30 desktop computer USB 20 $250.00 Time Remaining: 27d 1h 10m Buy It Now for only: $250.00 |
 SIIG Two Port Serial 16550 I O Card Model JJ P20211 S6 $39.95 Time Remaining: 21d 17m Buy It Now for only: $39.95 |
 PCI To Two COM Male Ports Controller Card MCS9835CV chips New $18.74 Time Remaining: 16d 9h 18m Buy It Now for only: $18.74 |
 SIIG 2 Two Port Serial I O Card Model JJ P20211 UJ172 $9.95 Time Remaining: 11d 22h 50m Buy It Now for only: $9.95 |
 Two Ports USB30 PCI E X1 Network Card w Disc Driver $22.13 Time Remaining: 20d 4h 7m Buy It Now for only: $22.13 |
 PCI RS232 Serial Port to Two COM Ports PCI Card MCS9835CV Chip $18.75 Time Remaining: 13d 4h 20m Buy It Now for only: $18.75 |
 2 Port SuperSpeed USB 30 PCI Express x1 Controller Card Add Two USB 30 Ports t $15.02 Time Remaining: 4d 8h 23m Buy It Now for only: $15.02 |
 New Dual Two 2xRS232 9 PIN Ports Serial PCI Expansion Card Free Shipping $7.59 Time Remaining: 21d 6h 18m Buy It Now for only: $7.59 |
 Two Specialix 4 Port RS 232 Terminal Adaptor Adapter 4 $24.95 Time Remaining: 8d 6h 9m Buy It Now for only: $24.95 |
 Two 9 PIN Serial 16550 Port JJ P20511 S2 $12.95 Time Remaining: 21d 14h 31m Buy It Now for only: $12.95 |
 PCI To Two COM Male Ports Controller Card MCS9835CV chips New $20.10 Time Remaining: 8d 23h 35m Buy It Now for only: $20.10 |
 GOOD Two Port I O RS232 9 Pin Serial PCI Expansion Card Connector NEW BLACK $6.59 Time Remaining: 18d 7h 16m Buy It Now for only: $6.59 |
 PCI To Two COM Male Ports Controller Card MCS9835CV chips New $19.67 Time Remaining: 22d 19h 7m Buy It Now for only: $19.67 |
 Adesso API 811 2 Port FireWire 800 PCI Controller Card Add Two FireWire Ports to $36.71 Time Remaining: 22d 7h 20m Buy It Now for only: $36.71 |
 Mukii Two USB30 Port PCI Express Host Card TIP PU301 $27.79 Time Remaining: 22d 11h 2m Buy It Now for only: $27.79 |
 HP a730n Front I O connector panel Two USB ports One IEEE 1394 Audio ports $14.95 Time Remaining: 12d 10h 39m Buy It Now for only: $14.95 |
 Two Serial RS232 DB9 and 1 Parallel Port LPT1 DB25 PCI Express PCIe Card $16.99 Time Remaining: 6d 41m |
 PCMCIA SLOT FOR SONY VAIO PCG F350 TWO PORTS $4.49 Time Remaining: 4d 4h 10m Buy It Now for only: $4.49 |
 PCI RS232 Serial Port to Two COM Ports PCI Card MCS9835CV Chip $19.85 Time Remaining: 11d 5h 58m Buy It Now for only: $19.85 |
 PCI RS232 Serial Port to Two COM Ports PCI Card MCS9835CV Chip $19.61 Time Remaining: 6d 12h 33m Buy It Now for only: $19.61 |
 USB 30 two Ports 34 54mm Interface Express Card $24.69 Time Remaining: 25d 8h 28m Buy It Now for only: $24.69 |
 ASUS USB MIR Rev 1111 Card Two USB Connectors $10.00 Time Remaining: 19d 8h 1m Buy It Now for only: $10.00 |
 10PCs TSB41AB2 IEEE 1394a 2000 Two Port Transceiver $29.99 Time Remaining: 20h 8m Buy It Now for only: $29.99 |
 EMC pair of 303 142 100A Two port 10 Gb s FCoE I O module w latch handle CX4 $1,895.00 Time Remaining: 28d 23h 5m Buy It Now for only: $1,895.00 |
 1pc TSB41AB2 IEEE 1394a 2000 Two Port Cable Transceiver $5.40 Time Remaining: 23d 13h 51m Buy It Now for only: $5.40 |
 9 Pin Serial Port RS 232 PCI Controller Card Add Two Comports to Your PC $14.99 Time Remaining: 22d 2h 18m Buy It Now for only: $14.99 |
 New Dual Two 2 Serial RS 232 9 PIN Ports PCI Card $12.99 Time Remaining: 7d 5h 40m Buy It Now for only: $12.99 |
 USB 30 two Ports 34 54mm Interface Express Card $24.69 Time Remaining: 22d 15h 1m Buy It Now for only: $24.69 |
 USB 30 two Ports 34 54mm Interface Express Card $24.69 Time Remaining: 23d 14h 2m Buy It Now for only: $24.69 |
 BYTECC BT PE2S1P Two DB9 Serial One DB25 Parallel Port PCI Express Controller $41.99 Time Remaining: 21d 19h 18m Buy It Now for only: $41.99 |
 GXT Serial ATA TWO PORT PCI ADAPTER $15.95 Time Remaining: 7d 8h 16m Buy It Now for only: $15.95 |
 Actiontstar 83 12405 Two Port USB Desk Dock 5ft 15M Cable Length $24.98 Time Remaining: 6d 5h 50m Buy It Now for only: $24.98 |
 5X TSB41AB2 IEEE 1394a 2000 Two Port Cable Transceiver $17.99 Time Remaining: 23d 13h 45m Buy It Now for only: $17.99 |
 TWO SERIAL PORT REAR PANEL BRACKET W CABLE TO MOTHERBOARD $6.99 Time Remaining: 23h 26m |
 Two Port Serial ATA RAID Controller One Port ATA 133 IDE PCI Card w VIA VT6421A $20.99 Time Remaining: 24d 19h 19m Buy It Now for only: $20.99 |
 Two Ports USB30 PCI E X1 Network Card w Disc Driver $22.22 Time Remaining: 5d 21h 35m Buy It Now for only: $22.22 |
 Sunix 5437A Two Port PCI Express Serial RS 232 Interface Expansion Card $75.69 Time Remaining: 22d 6h 31m Buy It Now for only: $75.69 |
 PCI I O CARD TWO 16650 SERIAL PORTS JJ P20212 15pcs $200.00 Time Remaining: 18d 1h 52m Buy It Now for only: $200.00 |
 Sunix USB2300D Two external USB 30 Ports PCI Express Expansion Card $49.69 Time Remaining: 22d 6h 31m Buy It Now for only: $49.69 |
 Sunix 5479A Two Port Serial RS 232+One Parallel Port PCI Express Expansion Card $99.69 Time Remaining: 22d 6h 31m Buy It Now for only: $99.69 |
 Two Ports USB30 PCI E X1 Network Card w Disc Driver $26.15 Time Remaining: 14d 21h 31m Buy It Now for only: $26.15 |
 83 11862 Two Port USB 30 Interface Card PCI Express Supports Up to 5Gbps Data $46.29 Time Remaining: 17d 10h 45m Buy It Now for only: $46.29 |
 SIIG JUP20412S2 Two Port USB 30 SuperSpeed PCIe Card $39.99 Time Remaining: 12d 19h 54m Buy It Now for only: $39.99 |
 5X TSB41AB2 IEEE 1394a 2000 Two Port Cable Transceiver $22.49 Time Remaining: 23d 13h 45m Buy It Now for only: $22.49 |
 IBM 5767 Two Port Ethernet Adapter new $150.00 Time Remaining: 5d 6h 22m Buy It Now for only: $150.00 |
 NEW SIIG JU HS2012 S2 USB TO 2 PORT SERIAL ROHS PROVIDES TWO RS232 SERIAL PORTS $57.63 Time Remaining: 29d 1h 54m Buy It Now for only: $57.63 |
 Siig SC SAE012 S2 SIIG Controller Card SATA SC SAE012 S2 PCI Express x1 Two port $70.26 Time Remaining: 19d 14h 54m Buy It Now for only: $70.26 |
 1pc TSB41AB2 IEEE 1394a 2000 Two Port Cable Transceiver $5.40 Time Remaining: 19d 13h 57m Buy It Now for only: $5.40 |
 Precision Fully Bi Directional Two Port DATA SWITCH $22.00 Time Remaining: 10d 9h 48m Buy It Now for only: $22.00 |
Two Ports
The explanation of port forwarding and reverse tunnel
What is Port Forwarding?
Port forwarding, can be called port mapping. A word of definition of port forwarding is a way that bridge the communication between one side and another side.
Port forwarding is necessary under the below scenarios and Port Forwarding Wizard can be used for those scenarios.
1.Port forwaridng with router: Normally, we surfy internet by using a router. That means our computer behind the router. Our compuer has a private ip address and the router has a public ip address. The requests of our computer will send to the router and the router will rely the requests to internet. This is how we surfy internet. Router is like a front door before your computer. But if internet users or applications want to access your computer, it will reach the router(front door) firstly. If there is no port opened for this request in your router. Your router don't know how to deal with this, So your router will refuse the request directly. This will result internet users or applications can not access your computer. Port forwarding is the right way to resolve this. What you need to do is just add a port forwarding entry into your router, then your router will know how to forward the request from internet users or applications to your computer that behind the router.
2. Port trigger instead of port forwarding for your router: Port Trigger is an option of router. Basically, port trigger and port forwarding are the same. They all open a port on your router and when there is connection or data from internet, your router will forward the connection or data to your local computer that behind router. The difference between port trigger and port forwarding is, when you use port forwarding function of your router, your router will always open the port no matter you are using it or not and the internal address be forwarded is static, if you want to change the address that you want to forward, you must edit the port forwarding entry in your router. Comparing with port forwading, port trigger is a little more secure and it is dynamic.
3.Port forwarding without router: Port forwarding is not just for router. Port forwarding is also very important for the scenario without router. For example, there is three computers, A, B and C. There is a server application running under computer C and computer A need to access the application. But A just can not directly access the application on computer C, A must log in computer B as a hop. Port forwarding is very userful for this, what you need to do is just deploy Port Forwarding Wizard on computer B. this port forwarding software will bridge the communication between computer A and C. Computer A can directly access the application on computer C by this way.
4.Port Forwarding to multi-destinations at the same time: Sometime, you need to port forwarding request to multi-destinations at the same time. Two important strategys integrated with Port Forwarding Wizard can be used to accomplish this. One strategy is port forwarding based the ip address of incoming requests and the others strategy is port forwarding of round-robin. We call the two port forwarding strategys as smart route. As we all know, the function of port forwarding supported by router can just port forwarding to only one destination one time. We can port forwarding to multi-destinations at the same time by combining smart router with your router, This will extend port forwarding function of your router, you can port forwarding to multi-destinations at the same time when you want to port forwarding with your router.
5.Convert port forwarding to http proxy: If you have two computers, A and B. Only computer A can access internet. Then you can deploy Port Forwarding Wizard on your computer A and you can add a port forwarding entry into Port Forwarding Wizard, select the option of "Run as a http proxy". Then you can config Computer A as the http proxy of Computer B. It is like magical that you two computers can surfy internet at the same time now.
What is reverse tunnel?
Reverse tunnel is a very useful way to access some application on the computer that behind a restricted Firewall/Gateway/Router. For security concern, a lots of administrators will configure Firewall/Gateway/Router to refuse the connection from outside. So you just can not directly access those computers without reverse tunnel technology. Normally, reverse tunnel include two components. One you can call client component and the other is server component. You should deploy the client component on the side of the computer that behind Firewall/Gateway/Rourter and the server component on the side of your computer. The client and server component will automatically create a session connection to control reverse tunnel. The server component will listen on a port that you can connect. So when you access the port of server component. The server component will control the client component to create a reverse tunnel connection to the server component. The Firewall/Gateway/Router will not restrict this. Then client component can receive data from server component and port forwarding to the application on the computer that behind Firewall/Gateway/Router. This is the basic idea of reverse tunnel that can let you access some application that you can not directly access.
Software solution
If you are looking for a software solution for port forwarding and reverse tunnel, you can get more info from here http://www.port-forwarding.net
About the Author
Need a router with two ethernet ports?
Right i need a router with two ethernet ports, one for computer one for xbox, any suggestions? Pc world maybe?
@GTB: If he doesnt already know what he needs, how is he going to understand half of what you said?
All you need is any router. I suggest looking on www.ebuyer.com, as you can get them on next day delivery.
As for the router brand, it doesnt really matter, but I would get either a linksys or a belkin.
You could always try and get one from your ISP (the company your intrnet is supplied by).
Quake II PSX (Part 1 of 15)
