I cannot see PC W2K from PC XPHE SP2 in lan

Dear all,
Have anyone experienced similar problem??


I have a small lan 3 PC connected thru an hub to an ADSL router.
They receive IP from DHCP server (provider).
When I try to connect from PC having W2K Pro (Sygate firewalled) to
other two (XP) I can easily.
When I connect I connect directly thru a cross cable with input fixed
IP I cannot access to XP from W2K, but exactly the opposite.


When I try to connect from one of two PC XP to W2K I cannot see it.
I tried several solutions before writing this note with no success:
when I ping the IP address of W2K PC I get time out error.
If I run nbtstat - n, I see W2K PC.


This is what I get from IPconfig /all (the addresses are modified for
privacy reason but are similar):


PC con W2000 Pro (english)


Windows 2000 IP Configuration


Host Name . . . . . . . . . . . . : PIPPO
Primary DNS Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : mycompany.mycompany.com
Ethernet adapter Local Area Connection:


Connection-specific DNS Suffix . : mycompany.com
Description . . . . . . . . . . . : 3Com 3C920 Integrated Fast
Ethernet Controller (3C905C-TX Compatible)
Physical Address. . . . . . . . . : 00-06-5B-E5-AA-94
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IP Address. . . . . . . . . . . . : 100.12.0.xxx
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 100.12.0.x
DHCP Server . . . . . . . . . . . : 100.12.0.x
DNS Servers . . . . . . . . . . . : 192.100.0.34
Lease Obtained. . . . . . . . . . : 31 March, 2005 10:39:40
Lease Expires . . . . . . . . . . : 01 April, 2005 10:39:40


PC1 Windows XP HE SP2 (Italian)
Configurazione IP di Windows
Nome host . . . . . . . . . . . . . . : PLUTO
Suffisso DNS primario . . . . . . . :
Tipo nodo . . . . . . . . . . . . . . : Sconosciuto
Routing IP abilitato. . . . . . . . . : No
Proxy WINS abilitato . . . . . . . . : No


Scheda Ethernet Connessione alla rete locale (LAN):


Suffisso DNS specifico per connessione:
Descrizione . . . . . . . . . . . . . : National Semiconductor Corp.
DP83815/816 10/100 MacPhyter PCI Adapter
Indirizzo fisico. . . . . . . . . . . : 00-0E-7F-70-11-C5
DHCP abilitato. . . . . . . . . . . . : Sì
Configurazione automatica abilitata : Sì
Indirizzo IP. . . . . . . . . . . . . : 100.12.0.xxx
Subnet mask . . . . . . . . . . . . . : 255.255.255.0
Gateway predefinito . . . . . . . . . : 100.12.0.x
Server DHCP . . . . . . . . . . . . . : 100.12.0.x
Server DNS . . . . . . . . . . . . . : 100.12.0.x
Lease ottenuto. . . . . . . . . . . . : 31 marzo 2005 10.39.40
Scadenza lease . . . . . . . . . . . : 1 aprile 2005 10.39.40


PC2 Windows XP HE SP2 (Italian)
Configurazione IP di Windows
Nome host . . . . . . . . . . . . . . : TOPO
Suffisso DNS primario . . . . . . . :
Tipo nodo . . . . . . . . . . . . . . : Sconosciuto
Routing IP abilitato. . . . . . . . . : No
Proxy WINS abilitato . . . . . . . . : No


Scheda Ethernet Connessione alla rete locale (LAN):


Suffisso DNS specifico per connessione:
Descrizione . . . . . . . . . . . . . : National Semiconductor Corp.
DP83815/816 10/100 MacPhyter PCI Adapter
Indirizzo fisico. . . . . . . . . . . : 00-0E-7F-70-0B-B9
DHCP abilitato. . . . . . . . . . . . : Sì
Configurazione automatica abilitata : Sì
Indirizzo IP. . . . . . . . . . . . . : 100.12.0.xxx
Subnet mask . . . . . . . . . . . . . : 255.255.255.0
Gateway predefinito . . . . . . . . . : 100.12.0.x
Server DHCP . . . . . . . . . . . . . : 100.12.0.x
Server DNS . . . . . . . . . . . . . : 100.12.0.x
Lease ottenuto. . . . . . . . . . . . : 31 marzo 2005 10.39.40
Scadenza lease . . . . . . . . . . . : 1 aprile 2005 10.39.40

.

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