[Solved] Connected but no access to youtube, facebook, twi

[fromMars]

I connected with vpnclient on Ubuntu 12.04 LTS, the ip address location by google also shows the connection is successful. But I still have no access to youtube, facebook and twitter, what's wrong with my setting? Anyone knows?

here is my settings:
declare root
{
bool CheckServerCert false
uint64 CreateDateTime 0
uint64 LastConnectDateTime 0
bool StartupAccount false
uint64 UpdateDateTime 0

declare ClientAuth
{
uint AuthType 1
byte HashedPassword H8N7rT8BH44q0nFXC9NlFxetGzQ=
string Username vpn
}
declare ClientOption
{
string AccountName vgp1
uint AdditionalConnectionInterval 1
uint ConnectionDisconnectSpan 0
string DeviceName vg
bool DisableQoS false
bool HalfConnection false
bool HideNicInfoWindow false
bool HideStatusWindow false
string Hostname %s
string HubName VPNGATE
uint MaxConnection 1
bool NoRoutingTracking false
bool NoTls1 false
bool NoUdpAcceleration false
uint NumRetry 4294967295
uint Port %s
uint PortUDP 0
string ProxyName $
byte ProxyPassword $
uint ProxyPort 0
uint ProxyType 0
string ProxyUsername $
bool RequireBridgeRoutingMode false
bool RequireMonitorMode false
uint RetryInterval 15
bool UseCompress false
bool UseEncrypt true
}
}

P.S. under Windows 8, i can visit those sites.

[fromMars]

Allright, i solved this by using DNS 8.8.8.8.