Security is still important for Mobile IPv6

We have explained and introduced many aspects of mobile IPv6, including its composition, architecture, and application. Now we are talking about its security. Some security risks of mobile communication still exist in IPv6, but there are still some improvements compared with v4.

Mobile IPv6 technology allows users to freely roam without interrupting network connections, which brings great convenience to users. However, in a mobile IP environment, terminals can be moved freely, in addition, it can use a variety of transmission media, including wireless channels, which also brings many security risks ｡

Mobile IPv6 communication faces the following security risks:

(1) Denial of Service (Denial of Service) attacks allow attackers to block all traffic on unprotected links and prevent communication between mobile terminals and other terminals ｡

(2) The redirection function of Binding Update packets to the group allows attackers to send Binding Update packets to the communication terminal by impersonating a mobile terminal, redirects the Group sent to the mobile terminal to the location specified by the attacker, causing the communication information to be leaked ｡

(3) Although the attribution address option solves the problem of the inbound network filter router, however, the current location information of the mobile terminal is exposed, which poses a security threat to some communications that wish to hide the location information of the mobile terminal ｡

(4) In the mobile IPv4 protocol, the foreign proxy will authenticate the mobile terminal before the mobile terminal obtains the forwarding address. In the Mobile IPv6 protocol, the foreign proxy is canceled, the security policy of mobile access requires a vro to access the network ｡

(5) The binding between the mobile terminal and the communication terminal eliminates the triangular routing and achieves route optimization. When the mobile terminal and the communication terminal are in the same local network, you can establish a security association by manually distributing keys or establishing an authentication organization. However, if the communication terminal is another node in the network, especially an untrusted node, it is difficult to establish security associations. At this time, a wide range of public key infrastructure needs to be established ｡

Mobile IPv6 uses the IPSec protocol to provide security protection for mobile terminal communication ｡

IPSec has two basic objectives:

First, protect the security of IP packets

Second, provide protection against Network Attacks

IPSec provides an open system security framework, two security mechanisms are provided: authentication and encryption. The authentication mechanism enables the data receiver of IP communication to confirm the real identity of the Data sender and whether the data is changed during transmission; encryption mechanisms ensure data confidentiality by encoding data. These mechanisms are implemented at the network layer and transparent to applications at or above the network layer ｡

Conclusion

This article discusses the packet delay caused by regional switching of mobile terminals and the security of Mobile IPv6. in practical applications of mobile terminal communication, there will be many problems, for example, the implementation of mobile terminal identity authentication, authorization, billing, and service quality assurance during communication will make the implementation of mobile terminal communication more complex ｡