摘要:
Technology for applying a communications traffic security policy in which a distinct communications traffic flow is segregated based upon a security value; whereby the communications traffic security policy include one or both of a detection and an enforcement policy. The detection policy may include determining whether the segregated communications traffic flow involves malware; and, the enforcement policy may include a malware policy.
摘要:
Technology for applying a communications traffic security policy in which a distinct communications traffic flow is segregated based upon a security value; whereby the communications traffic security policy include one or both of a detection and an enforcement policy. The detection policy may include determining whether the segregated communications traffic flow involves malware; and, the enforcement policy may include a malware policy.
摘要:
A method to negotiate computer settings in advance is presented. A prediction is made to determine if the computer setting will be needed, and if needed, whether a value outside of a normal range of values will be needed. A value for the computer setting that is outside of the normal range of values is determined and the value is set to the outside value. A value within the normal range of values is used if it was predicted that there is no need for a value outside of the normal range of values.
摘要:
A method and system that enables a security policy to separate developer-provided detection criteria from an administrator-provided custom policy is provided. The security system allows a developer of detection criteria to provide a signature file containing the signatures that are available for use by a security policy. The security system also allows an administrator of a computer system to specify a custom policy that uses the signatures of the signature file. The developer may distribute the signature file to host computer systems independently of the administrator's distribution of the rules of the custom policy to the host computer systems. When a security enforcement event occurs at the host computer system, the security system applies the rules of the security policy to the event.
摘要:
An initial sequence number generator is provided that prevents the local server from being attacked while maintaining reliable data transfer. A random intermediate value is created that is unique to each connection identifier and is combined with a random value created from a global counter to generate the initial sequence number. The counter capable of monotonically increasing by both a fixed and variable amount for ensuring that the same connection identifier does not have data collisions from competing sequence numbers within a predetermined period of time, and also to ensures randomness of the initial sequence number on a per connection basis for preventing attacks on the local server.
摘要:
A method for a firewall-aware application to communicate its expectations to a firewall without requiring the firewall to change its policy or compromise network security. An application API is provided for applications to inform a firewall or firewalls of the application's needs, and a firewall API is provided that informs the firewall or firewalls of the application's needs. An interception module watches for connect and listen attempts by applications and services to the network stack on the local computer. The interception module traps these attempts and determines what user is making the attempt, what application or service is making the attempt, and conducts a firewall policy look-up to determine whether the user and/or application or service are allowed to connect to the network. If so, the interception module may instruct the host and/or edge firewall to configure itself for the connection being requested.
摘要:
A firewall acts as a transparent gateway to a server within a private network by initiating an unsolicited challenge to a client to provide authentication credentials. After receiving the client's credentials, the firewall verifies the authentication credentials and establishes a secure channel for accessing the server. Data destined for the server from the client may be forwarded through the firewall using the secure channel. The firewall may sign, or otherwise indicate that data forwarded to the server is from a client that the firewall has authenticated. The firewall also may provide some level of authentication to the client. While connected to the server, the client may access other servers external to the private network without having the data associated with the other servers pass through the private network. The firewall reduces configuration information that a client otherwise must maintain to access various private network servers.
摘要:
A conditional activation system distributes a security policy to the computer systems of an enterprise. Upon receiving a security policy at a computer system, the computer system may install the received security policy without activation. When a security policy is installed without activation, it is loaded onto a computer system but is not used to process security enforcement events. The computer system may then determine whether a security policy activation criterion has been satisfied and, if so, activate the security policy.
摘要:
A system and method for protecting a computer system connected to a communication network from a potential vulnerability. The system and method protects a computer system that is about to undergo or has just undergone a change in state that may result in placing the computer system at risk to viruses, and the like, over a communication network. The system and method first detect an imminent or recent change in state. A security component and a fixing component react to the detection of the change in state. The security component may raise the security level to block incoming network information, other than information from a secure or known location, or information requested by the computer system. The fixing component implements a fixing routine, such as installing missing updates or patches, and on successfully completing the fixing routine, the security level is relaxed or lowered.
摘要:
A method and system for selectively excluding a program from a security policy is provided. The security system receives from a user an indication of a program with a problem that is to be excluded from the security policy. When the program executes and a security enforcement event occurs, the security system does not apply the security policy. If the problem appears to be resolved as a result of excluding the program from the security policy, then the user may assume that the security policy is the cause of the problem.