General
Net Accelerator can improve your connection speed no matter what type of connection you are using (Dialup, DSL, LAN, Cable etc.).
It’s very hard to configure your connection automatically because there are a lot of different hardware vendors in the market and each computer is a little bit different than the other. After choosing your configuration, Please click on the ‘Apply’ button.
Automatic optimization modes (Automatic #1, Automatic #2, Automatic #3):
After a lot of research, Net Accelerator offers three different Automatic Optimization Modes which will improve your connection speed. You should try all three of them to find out which Automatic Optimization Mode suits your hardware configuration best. If you are unsatisfied with the three automatic optimization modes results you may try the manual mode.
Manual optimization mode:
Since each system is different, there aren’t fixed rules. If you don’t obtain satisfactory results with the Automatic Optimization Modes, you should try various setting combinations. Watch your Internet performance to find out which configuration suits your hardware configuration best.

MTU (Maximum Transmission Unit):
This is the default packet size that Windows uses to negotiate with. When a connection is opened between two computers, they must agree on an MTU. It’s done by comparing MTU and selecting the smaller of the two. If the MTU is set too large for routers that are between the computers, these routers then fragment this information into a packet size that the router can handle. This fragmentation can double the amount of time it takes to send a single packet.
Windows has a built-in MTU Discovery that will adjust for this by sending out a packet that is marked as "Not Fragmental". Then the router sends back an error to the computer saying that the packet was too large, and Windows then lowers the MTU until there are no more errors. 
  If your ISP uses an MTU of 576, then every time you start a connection, Windows must adjust down to this value. Even though Windows automatically adjusts the packet size, it still takes it time to negotiate an acceptable MTU. By setting this value manually, you greatly reduce the amount of work that Windows must do to negotiate. 
RWIN (Receive Window):
This is the default packet size that Windows uses to negotiate with. When a connection is opened between two computers, they must agree on an MTU. It’s done by comparing MTU and selecting the smaller of the two. If the MTU is set too large for routers that are between the computers, these routers then fragment this information into a packet size that the router can handle. This fragmentation can double the amount of time it takes to send a single packet.
Windows has a built-in MTU Discovery that will adjust for this by sending out a packet that is marked as "Not Fragmental". Then the router sends back an error to the computer saying that the packet was too large, and Windows then lowers the MTU until there are no more errors. 
  If your ISP uses an MTU of 576, then every time you start a connection, Windows must adjust down to this value. Even though Windows automatically adjusts the packet size, it still takes it time to negotiate an acceptable MTU.  By setting this value manually, you greatly reduce the amount of work that Windows must do to negotiate. 
TTL (Time To Live):
TTL is a field in the IP header which indicates how long a packet should be allowed to survive before it is discarded. This value specifies the maximum number of routers that a packet may be forwarded through on to its destination. TTL essentially determines the maximum number of hops permitted.
Windows 95 default is 32, but with the Internet growing larger all the time, we recommend to set it to the larger setting of 128.