chicagotech

Have you installed a new software recenetly? Try to use system restore to restire the system.

Assuming you use Windows IIS, Open IIS, right click on the deault web and select virtual web site. point it to the location you want to.

If you have routers/firewall between two computers, you may need open port 5800 to/or 5900. this web page may help, Which port does VNC use. Where I can download VNC. VNC stands for Virtual Network Computing. It is, in essence, a remote display system which allows you to ... http://www.chicagotech.net/vnc.htm

it could be the MTU issue. check these pages, vpn connection issues after 2003 sp1 Resolution: Set my VPN client MTU to 1400. To modify MTU, please refer to this page, How to change MTU settings for PPP or VPN. Related Topics ... http://www.howtonetworking.com/casestudy/2003sp1&mtu.htm - Similar pages black screen when rdp over vpn Finally, We reduce MTU from 1500 to 1400 in the SonicWall. ... http://www.howtonetworking.com/casestudy/mtu1.htm

can you ping each other? posting the results of both computers' ipconfig /all here may help. or check this page http://www.howtonetworking.com/Troubleshoo...ccessibale0.htm

sure, you can do that. this how to may help, http://www.howtonetworking.com/Networking/enablesharing0.htm

quoted from http://www.howtonetworking.com/ipconfig.htm Can't obtain/renew IP addresses from the DHCP server Symptoms: 1) you have a DHCP client which may not be able to obtain/renew IP addresses from the DHCP server intermittently. 2) after setup a workstation to obtain an IP address from DHCP, the machine can't ping others and ipconfig /all shows Autoconfiguration IP Address. . . : 169.254.x.x. Resolutions: 1) If this is XP, obtain the latest service pack for Windows XP. 2) Use the Network Diagnostics tool to identify any failed settings. To do this, go to Help and Support>Use Tools to view your computer information and diagnose problems>Network Diagnostics>Scan your system. When the process finishes, check for any items marked "FAILED" in red, expand those categories, and view the additional details about what the testing showed. 3) Assign a static ip on the client and ping the DHCP server. If you can't ping the DHCP server, check the connection and hardware. 4) If you can ping the DHCP after assigning static ip, check the DHCP settings. 5) Make sure no firewall is running on your LAN. 6) Run Repair this connection if it is XP. Or use netsh to reset TCP/IP configuration. 7) If it is win98/w2k, remove and reinstall TCP/IP. 8) Try to upgrade the new NIC driver. 9) Make sure you don't run out of IPs in the DHCP scope. 10) If you use a router as DHCP, you may want to upgrade the firmware.

it could be a virus or spyware. this page may help, http://www.howtonetworking.com/whatis/whatis.htm.

assuming one of 3 computer hae 2 NICs, yes, you can make the computer with 2 NICs as a router. quoted from http://www.howtonetworking.com/Networking/routing.htm. How to Configure Windows server to Be a Router RRAS is installed under w2k server by default, but not activated. To setup Windows 2000 as a router for a LAN, you need to two network adapters. To setup Windows 2000/2003 as a router for a LAN, you need to two network adapters. To enable LAN routing. go to Administrative Tools>Routing and Remote Access>Action>Configure and Enable Routing and Remote Access, and then complete the wizard. Right-click the server for which you want to enable routing, and then click Properties>General>Router, check Local area network (LAN) routing only, and then click OK.

any errors in event viewer? posting the result of ipconfig /all here may help.

it could be routing issue. postin gthe result of ipconfig here may help.

this may help. quoted from http://www.chicagotech.net Can't access some web sites Symptoms: 1) If you're using MS ICS or Windows server as router to access the Internet, your clients may not be able to access certain web sites. However, the ICS host or the server doesn't have this problem. 2) After installed a new router or cable modem replacing dial-up to access the Internet, you can't access some web sites. 3) You also find that most web sites you can't access are block to ping or they are security sites using HTTPS. Causes: 1) The problem occurs because many web servers block ICMP messages and the packets are dropped. As a result, the requested web site doesn't load. 2) This problem is caused also by an incompatible MTU networking setting. You may try to install the latest SP. If you use MS ICS, you may want to configure all your Client computers to use the new, lower MTU as the default for all Internet communication. To modify the MTU size, locate the following registry key: HKEY_LOCAL_MACHINE\ SYSTEM\ CurrentControlSet\ Services\ Tcpip\ Parameters\ Interfaces. If you use a router like Cisco DSL Router, you may want to adjusting the PPPoE MTU Size. For example, to adjusting the PPPoE MTU Size on the Cisco DSL Router, do interface ethernet0 no shut ip address <ip address> <subnet mask> ip adjust-mss 1452

this may help. quoted from www.chicagotech.net. Workgroup common Issue 2 - problem in a mixed OS Symptoms: 1) win9x computers can see each others but not W2K or XP. 2) win9x and W2K/XP can ping each other by using IP but not computer names. 3) Net view \\computername shows error 53. Resolutions: this is a name resolution issue. Since this is a workgroup without WINS server, you may need to enable NetBIOS over TCP/IP on W2K/XP. Note: some people find that installing NetBEUI or IPX also work. But loading NetBEUI or IPX is not recommended. If enabling NetBIOS over TCP/IP doesn't work while loading NetBEUI works, this is not name resolution issue. This may cause because of a software like firewall is running.

Computer browsing over vpn is the popular issue. In your case, you may want to install WINS since you have windows 2000. The VPN will assign WINS to the VPN client.

do you have win 2000 pro or server? if it is pro, it will except only one vpn. however, you may setup another ipsec vpn. more for information or other VPM tips, check http://www.chicagotech.net.