VPN slow issues
Symptom 1: You
experience extreme slow while accessing to remote resources over the VPN.
could be the MTU issue.
to determine the optimal MTU
Symptom 2: When running an application over the
VPN, it takes over 10 minutes to open it.
The application is written for a LAN no for a WAN.
2. The VPN client run the application using name instead of IP.
Symptom 3: Browsing
the shared folders of remote computers is very slow, for example changing one
folder to another it takes around 5 minutes.
browser is involved NetBIOS and name resolution.
Suggestion: 1. Use IP instead of host name.
2. Use TCP/IP only.
Symptom 4: Browsing some shared folders is
normal while others is very slow.
Cause: If the folder has too many subfolders and
files, browsing may be slow.
Symptom 5: The download is very slow on VPN
client after establishing the VPN.
Cause: The VPN Client may use the remote network
Suggestion: Change the default gateway from
remote to local. To do this, go to properties of the VPN connection>Properties
of TCP/IP>Advanced, uncheck Use default gateway on remote network.
Symptom 6: The client run Access over VPN. It
takes over several minutes to open a database.
Suggestion: Setup Terminal Server running
Access. Then have all VPN clients run TS over VPN.
Client can log on but can't browse the LAN or browse the LAN slow
1. It is better to set the workgroup to match the domain name on all Win9x
2. You might not want your clients to browse if you have more than 15 or 20
nodes because browsing a large network over a slow dial-up connection can be
extremely slow. Instead, predefining or manually mapping UNC connections to
needed shares and resources after establishing the VPN.
3. Make sure you have correct IP, Default Gateway, DNS and WINS settings.