Concept of anonymous surfing was born as result of many unethical web activities and snoops over globs, lead security personnels to find web safety solution. Unidentified web access for privacy and security of individual and organization is known as anonymous. To execute hidden surfing many algorithms and protocols have been defined. The initial way for unrecognised web surfing is to change IP of network with specific subnet mask and default gateway.Though we make use of variants like VPN for network authentication.
A free proxy server is established which allows traffic to filter and pass through proxy only, this is separate route/channel created which cannot be decrypted. SSL is another secure socket layer feature used by VPN. The plus pint is that SSL doesn't requires special VPN client software .
Masses across globe prefer to use online free vpn which provides network and data security as per mechanisms. The most common method to hide ip address is to use a proxy server in one form or another.
VPN permissions are given only to secure user and routers who already have passwords verified from service providers. If host and network devices of particular network are not legitimate then connections may be turned off.
There are 2 types of authentication : end user and automaton level.
Patron level: The data is sent via PPTP or L2TP tunnel in which user domain should be protected. This can be done by PPP authentication.
Machine level: To establish VPN connection, IPSec protocol is used. IPSec works at network layer). Machine verification can be executed by IPSec connection by digital certificates exchange or via Internet key exchange.
Encryption: VPN use encryption protocols to encode the data between terminals and network. This is done by transport and tunneling. L2TP, PPTP, IPSec are basic tunneling protocols used. Though non encrypted connection is possible but not allowed. But data encryption for VPN grant end to end terminal security, except security between client and VPN server. Though you can have each end terminal security after VPN connection with IPSec protocol.
Packet filtering: Packet filtering mode has to be ON on servers to enhance security. SSL is very useful technology by VPN. Thsi operates at session layer.This protocol is friendly as it is clientless and will not cater specific, rather it uses web browsers as immediate client application. To grant specific access, applications using java have to be setup as SSL can be handled by less VPN protocols.
Lets see how free proxy server concept works. You can be confidential from proxy server to remote server only. Proxies act as catalyst between 2 networks. Let's consider an instance, when you browse Google, your free proxy server IP is known. Hence admin has record of your related web searches. So, sending mails or chat becomes difficult. Sometimes free proxy server connected to is not well authenticated for network, so anonymous surfing becomes testing.