Professional Information Technology-Programming Book part 153 pptx

shares when 'File and Print Sharing for Netware Networks' is enabled, this setting
controls those packets.
Disable Automatic Netware Logon (Windows 95/98/Me)
This setting disables automatically logging on to Netware servers.
Change the Number of Simultaneous Connections (Windows 95/98/Me)
This setting specifies the maximum number of concurrent connections accepted.
Control the Timeout for LMHOST Name Resolution (Windows 95/98/Me)
This setting controls the period of time the system will wait before timing out
when seeking LMHOSTS for name resolution.
Control the DNS Port Used for Lookups (Windows 95/98/Me)
This setting controls which port is used for DNS lookup requests. The default is
port 53, but in some firewall situations the settings can be useful to specify an
alternate port.
Binding Multiple IP Address to a Single Network Card (Windows 95/98/Me)
The Windows 9x GUI does not accept having multiple IP addresses specified for a
single network adapter. This tweak allows you to add additional IP addresses using
the registry.
Specify the WinSock Database Files Location (Windows NT/2000/XP)
This parameter specifies the path to the standard internet database files (HOSTS,
LMHOSTS, NETWORKS, PROTOCOLS) used by the Windows Sockets
interface.
Manage Persistent Connections (Windows NT/2000/XP)
This setting controls whether new network mappings should be created as
persistent connections that are automatically reconnected at logon.
Speed Up ISP Logon Time (Windows 95/98/Me) Popular
On some systems it can take a long time to connect to the Internet, you can
decrease the time required to connect to your ISP by trying these simple steps.
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Disable Internet Access (All Windows)
By using this tweak you are able to restrict access to the Internet when using
Internet Explorer and other Microsoft compatible products such as Office.
Cable Modem and DSL Speed Tweak to Increase Performance (Windows
95/98/Me) Popular
These settings allow you to boost the speed of your broadband Internet connection
when using a Cable Modem or DSL Router with Windows 95, 98 and Millennium
Edition.
Dial-Up Networking Password Box Greyed Out (Windows 95/98/Me)
If you are having problems trying to get DUN to remember your password and you
find the option grayed out then there are a few things you can try.
Configure Internet Connection Sharing (ICS) (Windows 98/Me)
Windows 98SE and Me include a feature called Internet Connection Sharing (ICS)
which enables networked PCs to easily share a single Internet connection. These
settings allow you to configure some ICS parameters.
Enable Remote Assistance (Windows XP)
The Remote Assistance feature is a convenient way for an administrator to
remotely connect to a computer and with permission view the screen, move the
mouse, use the keyboard and chat online.
Optimize Broadband Cable Modem and DSL Connections (Windows 2000/XP)
Popular
These settings allow you to boost the speed of your broadband Internet connection
when using a Cable Modem or DSL Router with Windows 2000 and Windows XP.
Enable IP Packet Forwarding (Windows NT/2000/XP)
By default, TCP/IP forwarding is not enabled in Windows, this setting can be used
to enable TCP/IP forwarding for all network connections that are installed and
used by the computer.

Speed-up Modem and Serial Connections (Windows 95/98/Me)
Windows is normally limited to a default maximum speed of 115,200 bps for serial
communications. By using compression and high-speed UARTS modern modems
may reach this limit and not be allowed to operate at full speed. This tweak allows
Windows to communicate with speeds of 230400, 460800 and 921600 bps.
Optimize the DefaultRcvWindow & DefaultTTL Settings (Windows 95/98/Me)
Popular
The optimization of RcvWindow and DefaultTTL along with other registry
settings such as MaxMTU and MaxMSS can speed up TCPIP modem and Internet
connections.
Optimize Internet Connection Speed (Windows 95/98/Me) Popular
By optimizing the MaxMTU & MaxMSS settings along with the RWIN and TTL
settings you can increase dialup modem and broadband connection reliability and
performance by as much as 200%.
Keep Remote Connections Active After Logging Off (Windows NT/2000/XP)
When you log off from a Windows client any Remote Access Service (RAS)
connections will be automatically disconnected. Enable this setting to remain
connected after logging off.
Modify the Internet Auto-Dial Settings (All Windows)
Windows has the option to automatically dial your Internet Service Provider (ISP)
to establish an Internet connection. This option can be controlled using this tweak.
Optimize Broadband PPPoE Connections (Windows Me)
This setting optimized the IP MTU value so that there is reduced packet
fragmentation when using a broadband connection with PPPoE (Point-to-Point
Protocol over Ethernet).
Increase Transfer Rates with ICS and Broadband Connections (Windows 98)
If you are using Internet Connection Sharing ("ICS") with a broadband connection
then remove this key to increase the performance.
Disable Automatic Modem Connections at Startup (All Windows)
If remote connections are enabled in Windows, the system may try to initiate an

Internet connection at Windows startup or at the start of many applications. This
setting disables that behaviour.
Cable Modem and DSL Speed Tweak to Increase Performance (Windows NT)
Use these settings with your Cable Modem or DSL broadband Internet connection,
to boost network throughput performance with Windows NT.
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Network

: Protocols


TCP-IP
Transmission Control Protocol
Internet Protocol Enhancements


WINS
Windows Internet Name Service
Enhancements

Disable SSDP Discovery in Windows Messenger (Windows 2000/XP)
Windows Messenger uses the Simple Service Discovery Protocol (SSDP) to
attempt to locate upstream Internet gateways on UDP port 1900. This tweak allows
you to disable Universal Plug and Play Network Address Translation discovery to
reduce bandwidth and increase security.
Change the Number of Simultaneous HTTP Sessions (All Windows) Popular
Windows normally limits the number of simultaneous connections made to a single
web server. This behavior can be seen in Internet Explorer when downloading

multiple files from a web site and only a certain number will be active at any one
time.
Change the RPC Packet Size (Windows 2000/XP)
This setting allows you to modify the size limit of incoming Microsoft Remote
Procedure Call (RPC) packets.
Specify the NetBIOS Name Resolution Mode (Windows 95/98/Me)
There are several modes used in the resolution of NetBIOS, including WINS and
LMHOSTS lookups and broadcast queries. This setting controls which mode is
used.
Specify the NetBIOS Name Cache Timeout Period (Windows 95/98/Me)
This setting specifies the period that NetBIOS names are cached before requiring
an additional name query.
Specify the Timeout Period for Broadcast Queries (Windows 95/98/Me)
This setting allows you to specify the period of time the system will wait before
timing out broadcast name queries.
Specify the Number of Broadcast Name Resolution Attempts (Windows
95/98/Me)
This setting controls the number of attempts to resolve a NetBIOS name using a
broadcast query.
Specify the Number of NetBIOS Entries to Store (Windows 95/98/Me)
These settings control the maximum number of NetBIOS entries to store in the
name and session tables.
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Network

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Protocols

: TCP
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IP

Change the TIME_WAIT Timeout to Increase Connections (Windows
NT/2000/XP)
This setting determines the length of time that a connection will stay in the
TIME_WAIT state before being closed. The default is 240 seconds which on a
busy server will limit the maximum connections to around 200/sec. Reducing this
setting will increase the maximum connection limit.
Harden the TCP/IP Stack for Denial of Service Attacks (Windows 2000/XP)
Denial of service attacks are network attacks that are aimed at making a computer
or a particular service unavailable to network users. These settings can be used to
increase the ability for Windows to defend against these attacks when connected
directly to the Internet.
Disables DHCP Router Discovery (All Windows)
The ICMP Router Discovery Protocol (IRDP) comes enabled by default for
Windows clients using DHCP. This can be a security issue because by spoofing
IRDP Router Advertisements, an attacker can remotely add default route entries on
a remote system.
Protect Against SYN Flood Attacks (Windows NT/2000/XP)
Windows includes protection that allows it to detect and adjust when the system is
being targeted with a SYN flood attack (a type of denial of service attack). When
enabled the connection responses time out more quickly in the event of an attack.
Configure DHCP Server for Unicast (Windows NT/2000/XP)
By default, the Windows DHCP server sends all DHCP responses as IP broadcasts
to the limited broadcast address (255.255.255.255). However, the DHCP server
can be configured send to unicast responses by applying this tweak.
Specify the Router Buffer Size (Windows NT/2000/XP)
This parameter determines how much memory IP allocates to store packet data in

the router packet queue. When this buffer space is filled, the router begins
discarding packets at random from its queue.