Help Me With My 4800/320 !!!

[energello]

Hi, i'm energello from Italy

I have a very strange problem with my DSL 4800/320, my ISP is "LIBERO".

My download speed is VERY VERY low (about 25-30kb/s from any server!).
But when i try to download the same file from the same server with a download manager (like DAP or GetRight) my download speed go up..

I can see that takes 25-30 kb/s from multiple same server (it's the function of download manager.. i know) an my top speeds arrive to 450-480 kb/s!

But i won't use Download manager! i can't use during video streaming or online gaming !!!

I report the tcp analyzer scan.. plz help me..

I have tried to set manually tcp optimizer but now my top download speed is 15 Kb/s !!!

TCP options string = 020405ac01010402

MTU = 1492
MTU is optimized for PPoE DSL broadband. If not, consider raising MTU to 1500 for optimal throughput.

MSS = 1452
MSS is optimized for PPPoE DSL broadband. If not, consider raising your MTU value.

Default TCP Receive Window (RWIN) = 63888
RWIN Scaling (RFC1323) = 0 bits
Unscaled TCP Receive Window = 63888

RWIN is a multiple of MSS
Other RWIN values that might work well with your current MTU/MSS:
511104 (MSS x 44 * scale factor of 8)
255552 (MSS x 44 * scale factor of 4)
127776 (MSS x 44 * scale factor of 2)
63888 (MSS x 44) <-- current value

bandwidth * delay product (Note this is not a speed test):

Your TCP Window limits you to: 2555.52 kbps (319.44 KBytes/s) @ 200ms
Your TCP Window limits you to: 1022.208 kbps (127.776 KBytes/s) @ 500ms

MTU Discovery (RFC1191) = ON

Time to live left = 53 hops
TTL value is ok.

Timestamps (RFC1323) = OFF
Selective Acknowledgements (RFC2018) = ON

IP type of service field (RFC1349) = 00000000 (0)

[mnosteele52]

Your settings look perfect. Try the following:

1. Under your LAN connection - properties - general tab, uninstall all the protocols there that you do not need. For a stand alone pc all you need is Internet Protocol TCP/IP.

2. Open IE and select tools - internet options - connections - LAN settings, make sure NOTHING there is checked.

3. ALWAYS connect your modem via ethernet (NIC) and make sure you have the latest drivers for your NIC from the manufacturer and set your duplex mode to "auto". If you are using a router make sure you have the latest firmware.

4. Clean out your temporary internet files with CrapCleaner.

5. Power cycle your modem i.e. unplug it for at least 15 seconds.

6. Download, update and scan with SpyBot S&D 1.4, Ad-Aware SE 1.06, ewido anti-spyware 4.0 & SUPERAntiSpyware to remove any spyware then install and update SpywareBlaster 3.5.1 to stay spyware FREE.

7. If you aren't currently using a firewall then I suggest you install Kerio Personal Firewall 2.1.5, it's FREE and uses next to no resources.

8. Do a FREE online virus scan from BitDefender Online Scan and remove all that it finds.

9. Make sure you have ALL of the latest Windows Updates.

10. Just an FYI, if you are using Zone Alarm for a firewall it can noticeably drop your speeds.