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Virtual Private Network (VPN) Security Requirements Guide

Rules, Groups, and Values defined within the XCCDF Benchmark

  • SRG-NET-000519

    <GroupDescription></GroupDescription>
    Group
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  • The VPN Client must display an explicit logout message to users indicating the reliable termination of authenticated communications sessions.

    &lt;VulnDiscussion&gt;If a user cannot explicitly end a session, the session may remain open and be exploited by an attacker; this is referred to a...
    Rule Medium Severity
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  • SRG-NET-000522

    <GroupDescription></GroupDescription>
    Group
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  • For site-to-site, VPN Gateway must be configured to store only cryptographic representations of pre-shared Keys (PSKs).

    &lt;VulnDiscussion&gt;Pre-shared keys need to be protected at all times, and encryption is the standard method for protecting passwords. If PSKs ar...
    Rule Medium Severity
    Show

  • SRG-NET-000525

    <GroupDescription></GroupDescription>
    Group
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  • The IPsec VPN must use AES256 or greater encryption for the IPsec proposal to protect the confidentiality of remote access sessions.

    &lt;VulnDiscussion&gt;Without confidentiality protection mechanisms, unauthorized individuals may gain access to sensitive information via a remote...
    Rule High Severity
    Show

  • SRG-NET-000530

    <GroupDescription></GroupDescription>
    Group
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  • The TLS VPN Gateway that supports Government-only services must prohibit client negotiation to TLS 1.1, TLS 1.0, SSL 2.0, or SSL 3.0.

    &lt;VulnDiscussion&gt;Using older unauthorized versions or incorrectly configuring protocol negotiation makes the gateway vulnerable to known and u...
    Rule Medium Severity
    Show

  • SRG-NET-000540

    <GroupDescription></GroupDescription>
    Group
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  • The TLS VPN Gateway that supports citizen- or business-facing network devices must prohibit client negotiation to SSL 2.0 or SSL 3.0.

    &lt;VulnDiscussion&gt;Using older unauthorized versions or incorrectly configuring protocol negotiation makes the gateway vulnerable to known and u...
    Rule Medium Severity
    Show

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