| Registry DataBase : TCP/IP |
| There is a not so well-known though very useful Windows tool : Winipcfg.exe. |
| Key :
HKLM \SYSTEM \CurrentControlSet \Services \Vxd \MSTCP System : 95, 95+IE4.x, 98, ME, NT, 2K Entry : BroadcastAddress Type : REG_DWORD |
| NetBIOS name query address. Default value is based on IP address and sub-network mask. |
| Key :
HKLM \SYSTEM \CurrentControlSet \Services \Vxd \MSTCP System : 95, 95+IE4.x, 98, ME, NT, 2K Entry : BcastNameQueryCount Type : REG_DWORD Default : 3 |
| Number of attempts for a NetBIOS name query. |
| Key :
HKLM \SYSTEM \CurrentControlSet \Services \Vxd \MSTCP System : 95, 95+IE4.x, 98, ME, NT, 2K Entry : BcastQueryTimeout Type : REG_DWORD Range : 100 to 750 |
| Delay between 2 requests for a NetBIOS name query. |
| Key :
HKLM \SYSTEM \CurrentControlSet \Services \Vxd \MSTCP System : 95, 95+IE4.x, 98, ME, NT, 2K Entry : BSDUrgent Type : REG_DWORD Range : 0 or 1 Default : 1 |
| Urgent data handling method. 0 : RFC 1122 Standard 1 : Unix Style |
| Key :
HKLM \SYSTEM \CurrentControlSet \Services \Vxd \MSTCP System : 95, 95+IE4.x, 98, ME, NT, 2K Entry : CacheTimeout Type : REG_DWORD Minimum : 60,000 (1 minute) Default : 360,000 (6 minutes) |
| Delay in milliseconds during which NetBIOS long names are stored in the cache. |
| Key :
HKLM \SYSTEM \CurrentControlSet \Services \Vxd \MSTCP System : 95, 95+IE4.x, 98, ME, NT, 2K Entry : DeadGWDetect Type : REG_DWORD Range : 0 or 1 Default : 1 |
| 1 : Tells TCP/IP to use another gate if the current gate is unavailable. |
| Key :
HKLM \SYSTEM \CurrentControlSet \Services \Vxd \MSTCP System : 95, 95+IE4.x, 98, ME, NT, 2K Entry : DefaultRcvWindow Type : REG_DWORD Default : 8192 |
| Specifies default TCP/IP reception window. |
| Key :
HKLM \SYSTEM \CurrentControlSet \Services \Vxd \MSTCP System : 95, 95+IE4.x, 98, ME, NT, 2K Entry : DefaultTOS Type : REG_DWORD Valeur standard : 0 |
| IP packet default type of service. |
| Key :
HKLM \SYSTEM \CurrentControlSet \Services \Vxd \MSTCP System : 95, 95+IE4.x, 98, ME, NT, 2K Entry : DefaultTTL Type : REG_DWORD Default : 32 Suggested : 64 |
| 64 : Default time to live. Maximum number of
routers when looking for a site. When you type a website address, your query goes through different routers until it reaches the server hosting the website. If the number of routers exceeds 32, Internet Explorer says the site does not respond. Increase the number of routers. |
| Key :
HKLM \SYSTEM \CurrentControlSet \Services \Vxd \MSTCP System : 95, 95+IE4.x, 98, ME, NT, 2K Entry : DnsServerPort Type : REG_DWORD Default : 53 |
| DNS server port used for domain name resolution. |
| Key :
HKLM \SYSTEM \CurrentControlSet \Services \Vxd \MSTCP System : 95, 95+IE4.x, 98, ME, NT, 2K Entry : EnableProxy (TCP/IP) Type : REG_DWORD Default : 0 |
| Specifies whether the computer is a WINS
proxy agent. 0 : No 1 : Yes |
| Key :
HKLM \SYSTEM \CurrentControlSet \Services \Vxd \MSTCP System : 95, 95+IE4.x, 98, ME, NT, 2K Entry : IGMPLevel Type : REG_DWORD Default : 2 |
| IP multitransmission support level, according to RFC 1122. |
| Key :
HKLM \SYSTEM \CurrentControlSet \Services \Vxd \MSTCP System : 95, 95+IE4.x, 98, ME, NT, 2K Entry : InitialRefreshT.O. Type : REG_DWORD Range : 16 minutes to 50 days Default : 960,000 (16 minutes) |
| Delay in milliseconds to contact WINS in order to refresh the name. |
| Key :
HKLM \SYSTEM \CurrentControlSet \Services \Vxd \MSTCP System : 95, 95+IE4.x, 98, ME, NT, 2K Entry : KeepAliveTime Type : REG_DWORD Default : 7.200.000 (2 hours) |
| Idle period in milliseconds after which TCP/IP tries to revive the connection if this mode has been defined. |
| Key :
HKLM \SYSTEM \CurrentControlSet \Services \Vxd \MSTCP System : 95, 95+IE4.x, 98, ME, NT, 2K Entry : KeepAliveInterval Type : REG_DWORD Default : 1000 (1 second) |
| Delay in milliseconds for tryinng to revive connections when reaching KeepAliveTime. MaxDataRetries defines the number of retries. |
| Key :
HKLM \SYSTEM \CurrentControlSet \Services \Vxd \MSTCP System : 95, 95+IE4.x, 98, ME, NT, 2K Entry : LmhostsTimeout Type : REG_DWORD Minimum : 1000 (1 second) Default : 10,000 (10 seconds) |
| Delay in milliseconds the syetm waits before asking LMHOSTS for name resolution. |
| Key :
HKLM \SYSTEM \CurrentControlSet \Services \Vxd \MSTCP System : 95, 95+IE4.x, 98, ME, NT, 2K Entry : MaxConnections Type : REG_SZ Default : 100 |
| Maximum number of simultaneous connections. |
| Key :
HKLM \SYSTEM \CurrentControlSet \Services \Vxd \MSTCP System : 95, 95+IE4.x, 98, ME, NT, 2K Entry : MaxConnectRetries Type : REG_SZ Default : 3 |
| Maximum number of connection retries. Initial delay is 3 seconds and doubles each time until 2 minutes maximum. |
| Key :
HKLM \SYSTEM \CurrentControlSet \Services \Vxd \MSTCP System : 95, 95+IE4.x, 98, ME, NT, 2K Entry : MaxDataRetries Type : REG_SZ Default : 5 |
| Maximum number of retries to reenable a lost connection. |
| Key :
HKLM \SYSTEM \CurrentControlSet \Services \Vxd \MSTCP System : 95, 95+IE4.x, 98, ME, NT, 2K Entry : NameServerPort Type : REG_DWORD Default : 137 |
| UDP port number on the name server to which resolution queries are sent. |
| Key :
HKLM \SYSTEM \CurrentControlSet \Services \Vxd \MSTCP System : 95, 95+IE4.x, 98, ME, NT, 2K Entry : NameSrvQueryCount Type : REG_SZ Default : 3 |
| Number of contact attempts with the WINS server for NetBIOS name resolution. |
| Key :
HKLM \SYSTEM \CurrentControlSet \Services \Vxd \MSTCP System : 95, 95+IE4.x, 98, ME, NT, 2K Entry : NameSrvQueryTimeout Type : REG_DWORD Valeur minimale : 100 Default : 750 |
| Delay between 2 name server queries. |
| Key :
HKLM \SYSTEM \CurrentControlSet \Services \Vxd \MSTCP System : 95, 95+IE4.x, 98, ME, NT, 2K Entry : NameTableSize Type : REG_DWORD Range : 1 to 255 Default : 17 |
| Maximum number of entries in the NetBIOS name table. |
| Key :
HKLM \SYSTEM \CurrentControlSet \Services \Vxd \MSTCP System : 95, 95+IE4.x, 98, ME, NT, 2K Entry : NodeType Type : REG_SZ Range : 1, 2, 4 or 7 Default : 1 or 7 |
| Name resolution mode used by NetBIOS
on TCP/IP. Can be configured via DHCP. 1 : b-node, if WINS servers are specified 2 : p-node 4 : m-node 7 : h-node, if WINS servers are specified |
| Key :
HKLM \SYSTEM \CurrentControlSet \Services \Vxd \MSTCP System : 95, 95+IE4.x, 98, ME, NT, 2K Entry : PMTUBlackHoleDetect Type : REG_DWORD Default : 0 |
| About MTU (Maximum Transmission Unit) router queries which do not send back messages with (ICMP) fragmentation. An incorrect setting may damage performance. |
| Key :
HKLM \SYSTEM \CurrentControlSet \Services \Vxd \MSTCP System : 95, 95+IE4.x, 98, ME, NT, 2K Entry : PMTUDiscovery Type : REG_DWORD Default : 1 |
| About MTU activation. 0 : Off 1 : On |
| Key :
HKLM \SYSTEM \CurrentControlSet \Services \Vxd \MSTCP System : 95, 95+IE4.x, 98, ME, NT, 2K Entry : RandomAdapter Type : REG_DWORD Default : 0 |
| If more than one network adapters are
present :, 0 : Indicates if the IP address is the one of the adapter transmitting the query. 1 : Chooses a random IP address in the list of available IP addresses. |
| Key :
HKLM \SYSTEM \CurrentControlSet \Services \Vxd \MSTCP System : 95, 95+IE4.x, 98, ME, NT, 2K Entry : RoutingBufSize Type : REG_DWORD Default : 73216 |
| Buffer size allocated for transmission units. |
| Key :
HKLM \SYSTEM \CurrentControlSet \Services \Vxd \MSTCP System : 95, 95+IE4.x, 98, ME, NT, 2K Entry : RoutingPackets Type : REG_DWORD Default : 50 |
| Number of packets which can be routed simultaneously. |
| Key :
HKLM \SYSTEM \CurrentControlSet \Services \Vxd \MSTCP System : 95, 95+IE4.x, 98, ME, NT, 2K Entry : SessionKeepAlive Type : REG_DWORD Range : 60.000 to 3.600.000 |
| Delay in milliseconds for attempts at sending live packets to active sessions. |
| Key :
HKLM \SYSTEM \CurrentControlSet \Services \Vxd \MSTCP System : 95, 95+IE4.x, 98, ME, NT, 2K Entry : SessionTableSize Type : REG_DWORD Range : 1 to 255 Default : 255 |
| Maximum number of entries in theNetBIOS session table. |
| Key :
HKLM \SYSTEM \CurrentControlSet \Services \Vxd \MSTCP System : 95, 95+IE4.x, 98, ME, NT, 2K Entry : SingleResponse Type : REG_DWORD Range : 0 or 1 Default : 0 |
| Number of answers to a WINS
name query. 0 : Returns all available addresses. 1 : Returns 1 address only. |
| © Franck Kiechel 2000-2001 |