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Guide to the Secure Configuration of SUSE Linux Enterprise 12

Rules, Groups, and Values defined within the XCCDF Benchmark

  • net.ipv6.conf.all.accept_ra_defrtr

    Accept default router in router advertisements?
    Value
    Show

  • net.ipv6.conf.all.accept_ra_pinfo

    Accept prefix information in router advertisements?
    Value
    Show

  • net.ipv6.conf.all.accept_ra_rtr_pref

    Accept router preference in router advertisements?
    Value
    Show

  • net.ipv6.conf.all.accept_ra

    Accept all router advertisements?
    Value
    Show

  • net.ipv6.conf.all.accept_redirects

    Toggle ICMP Redirect Acceptance
    Value
    Show

  • net.ipv6.conf.all.accept_source_route

    Trackers could be using source-routed packets to generate traffic that seems to be intra-net, but actually was created outside and has been redirected.
    Value
    Show

  • net.ipv6.conf.all.forwarding

    Toggle IPv6 Forwarding
    Value
    Show

  • net.ipv6.conf.all.max_addresses

    Maximum number of autoconfigured IPv6 addresses
    Value
    Show

  • net.ipv6.conf.all.router_solicitations

    Accept all router solicitations?
    Value
    Show

  • net.ipv6.conf.default.accept_ra_defrtr

    Accept default router in router advertisements?
    Value
    Show

  • net.ipv6.conf.default.accept_ra_pinfo

    Accept prefix information in router advertisements?
    Value
    Show

  • net.ipv6.conf.default.accept_ra_rtr_pref

    Accept router preference in router advertisements?
    Value
    Show

  • net.ipv6.conf.default.accept_ra

    Accept default router advertisements by default?
    Value
    Show

  • net.ipv6.conf.default.accept_redirects

    Toggle ICMP Redirect Acceptance By Default
    Value
    Show

  • net.ipv6.conf.default.accept_source_route

    Trackers could be using source-routed packets to generate traffic that seems to be intra-net, but actually was created outside and has been redirected.
    Value
    Show

  • net.ipv6.conf.default.autoconf

    Enable auto configuration on IPv6 interfaces
    Value
    Show

  • net.ipv6.conf.default.forwarding

    Toggle IPv6 default Forwarding
    Value
    Show

  • net.ipv6.conf.default.max_addresses

    Maximum number of autoconfigured IPv6 addresses
    Value
    Show

  • net.ipv6.conf.default.router_solicitations

    Accept all router solicitations by default?
    Value
    Show

  • Configure Accepting Prefix Information in Router Advertisements on All IPv6 Interfaces

    To set the runtime status of the <code>net.ipv6.conf.all.accept_ra_pinfo</code> kernel parameter, run the following command: <pre>$ sudo sysctl -w net.ipv6.conf.all.accept_ra_pinfo=0</pre> To make ...
    Rule Unknown Severity
    Show

  • Disable Accepting ICMP Redirects for All IPv6 Interfaces

    To set the runtime status of the <code>net.ipv6.conf.all.accept_redirects</code> kernel parameter, run the following command: <pre>$ sudo sysctl -w net.ipv6.conf.all.accept_redirects=0</pre> To mak...
    Rule Medium Severity
    Show

  • Disable Kernel Parameter for Accepting Source-Routed Packets on all IPv6 Interfaces

    To set the runtime status of the <code>net.ipv6.conf.all.accept_source_route</code> kernel parameter, run the following command: <pre>$ sudo sysctl -w net.ipv6.conf.all.accept_source_route=0</pre> ...
    Rule Medium Severity
    Show

  • Disable Kernel Parameter for IPv6 Forwarding

    To set the runtime status of the <code>net.ipv6.conf.all.forwarding</code> kernel parameter, run the following command: <pre>$ sudo sysctl -w net.ipv6.conf.all.forwarding=0</pre> To make sure that ...
    Rule Medium Severity
    Show

  • Configure Maximum Number of Autoconfigured Addresses on All IPv6 Interfaces

    To set the runtime status of the <code>net.ipv6.conf.all.max_addresses</code> kernel parameter, run the following command: <pre>$ sudo sysctl -w net.ipv6.conf.all.max_addresses=1</pre> To make sure...
    Rule Unknown Severity
    Show

  • Configure Denying Router Solicitations on All IPv6 Interfaces

    To set the runtime status of the <code>net.ipv6.conf.all.router_solicitations</code> kernel parameter, run the following command: <pre>$ sudo sysctl -w net.ipv6.conf.all.router_solicitations=0</pre...
    Rule Unknown Severity
    Show

  • Disable Accepting Router Advertisements on all IPv6 Interfaces by Default

    To set the runtime status of the <code>net.ipv6.conf.default.accept_ra</code> kernel parameter, run the following command: <pre>$ sudo sysctl -w net.ipv6.conf.default.accept_ra=0</pre> To make sure...
    Rule Medium Severity
    Show

  • Configure Accepting Default Router in Router Advertisements on All IPv6 Interfaces By Default

    To set the runtime status of the <code>net.ipv6.conf.default.accept_ra_defrtr</code> kernel parameter, run the following command: <pre>$ sudo sysctl -w net.ipv6.conf.default.accept_ra_defrtr=0</pre...
    Rule Unknown Severity
    Show

  • Configure Accepting Router Preference in Router Advertisements on All IPv6 Interfaces By Default

    To set the runtime status of the <code>net.ipv6.conf.default.accept_ra_rtr_pref</code> kernel parameter, run the following command: <pre>$ sudo sysctl -w net.ipv6.conf.default.accept_ra_rtr_pref=0<...
    Rule Unknown Severity
    Show

  • Disable Kernel Parameter for Accepting ICMP Redirects by Default on IPv6 Interfaces

    To set the runtime status of the <code>net.ipv6.conf.default.accept_redirects</code> kernel parameter, run the following command: <pre>$ sudo sysctl -w net.ipv6.conf.default.accept_redirects=0</pre...
    Rule Medium Severity
    Show

  • Configure Auto Configuration on All IPv6 Interfaces By Default

    To set the runtime status of the <code>net.ipv6.conf.default.autoconf</code> kernel parameter, run the following command: <pre>$ sudo sysctl -w net.ipv6.conf.default.autoconf=0</pre> To make sure t...
    Rule Unknown Severity
    Show

  • Disable Kernel Parameter for IPv6 Forwarding by default

    To set the runtime status of the <code>net.ipv6.conf.default.forwarding</code> kernel parameter, run the following command: <pre>$ sudo sysctl -w net.ipv6.conf.default.forwarding=0</pre> To make su...
    Rule Medium Severity
    Show

  • Configure Maximum Number of Autoconfigured Addresses on All IPv6 Interfaces By Default

    To set the runtime status of the <code>net.ipv6.conf.default.max_addresses</code> kernel parameter, run the following command: <pre>$ sudo sysctl -w net.ipv6.conf.default.max_addresses=1</pre> To m...
    Rule Unknown Severity
    Show

  • Configure Denying Router Solicitations on All IPv6 Interfaces By Default

    To set the runtime status of the <code>net.ipv6.conf.default.router_solicitations</code> kernel parameter, run the following command: <pre>$ sudo sysctl -w net.ipv6.conf.default.router_solicitation...
    Rule Unknown Severity
    Show

  • net.ipv4.conf.default.shared_media

    Controls whether the system can send(router) or accept(host) RFC1620 shared media redirects. <code>shared_media</code> for the interface will be enabled if at least one of conf/{all,interface}/shar...
    Value
    Show

  • net.ipv4.icmp_echo_ignore_broadcasts

    Ignore all ICMP ECHO and TIMESTAMP requests sent to it via broadcast/multicast
    Value
    Show

  • net.ipv4.icmp_ignore_bogus_error_responses

    Enable to prevent unnecessary logging
    Value
    Show

  • Kernel Parameters Which Affect Networking

    The sysctl utility is used to set parameters which affect the operation of the Linux kernel. Kernel parameters which affect networking and have security implications are described here.
    Group
    Show

  • Network Related Kernel Runtime Parameters for Hosts and Routers

    Certain kernel parameters should be set for systems which are acting as either hosts or routers to improve the system's ability defend against certain types of IPv4 protocol attacks.
    Group
    Show

  • net.ipv4.conf.all.accept_redirects

    Disable ICMP Redirect Acceptance
    Value
    Show

  • net.ipv4.conf.all.accept_source_route

    Trackers could be using source-routed packets to generate traffic that seems to be intra-net, but actually was created outside and has been redirected.
    Value
    Show

  • net.ipv4.conf.default.arp_filter

    Controls whether the ARP filter is enabled or not. 1 - Allows you to have multiple network interfaces on the same subnet, and have the ARPs for each interface be answered based on whether or not t...
    Value
    Show

  • net.ipv4.conf.default.arp_ignore

    Control the response modes for ARP queries that resolve local target IP addresses: 0 - (default): reply for any local target IP address, configured on any interface 1 - reply only if the target IP...
    Value
    Show

  • net.ipv4.conf.all.log_martians

    Disable so you don't Log Spoofed Packets, Source Routed Packets, Redirect Packets
    Value
    Show

  • net.ipv4.conf.all.rp_filter

    Enable to enforce sanity checking, also called ingress filtering or egress filtering. The point is to drop a packet if the source and destination IP addresses in the IP header do not make sense whe...
    Value
    Show

  • net.ipv4.conf.all.secure_redirects

    Enable to prevent hijacking of routing path by only allowing redirects from gateways known in routing table. Disable to refuse acceptance of secure ICMP redirected packets on all interfaces.
    Value
    Show

  • net.ipv4.conf.all.shared_media

    Controls whether the system can send (router) or accept (host) RFC1620 shared media redirects. <code>shared_media</code> for the interface will be enabled if at least one of conf/{all,interface}/sh...
    Value
    Show

  • net.ipv4.conf.default.accept_redirects

    Disable ICMP Redirect Acceptance?
    Value
    Show

  • net.ipv4.conf.default.accept_source_route

    Disable IP source routing?
    Value
    Show

  • net.ipv4.conf.default.log_martians

    Disable so you don't Log Spoofed Packets, Source Routed Packets, Redirect Packets
    Value
    Show

  • Disable Kernel Parameter for Accepting Source-Routed Packets on all IPv4 Interfaces

    To set the runtime status of the <code>net.ipv4.conf.all.accept_source_route</code> kernel parameter, run the following command: <pre>$ sudo sysctl -w net.ipv4.conf.all.accept_source_route=0</pre> ...
    Rule Medium Severity
    Show

Node 2

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The content of the drawer really is up to you. It could have form fields, definition lists, text lists, labels, charts, progress bars, etc. Spacing recommendation is 24px margins. You can put tabs in here, and can also make the drawer scrollable.

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