Friday, August 20, 2010

Ten common issues involving VPN connections

Virtual private networking provides a secure path into private corporate networks, but plenty of things can go wrong. Here are 10 common situations.

1. Users can't access file servers

2. Users can't access anything on the corporate network

3. Users can't connect to VPN server from behind NAT devices

4. Users complain of slow performance

5. Users can connect via PPTP but not L2TP/IPSec

6. Site-to-site VPNs connect but no traffic passes between the VPN gateways

7. Users can't establish IPSec tunnel mode connections from behind some firewalls

8. Users can't reach some network IDs on the corporate network

9. Users can't connect to the Internet when connected to the VPN server

10. Multiple users connect to the VPN server using the same PPP authentication credentials