f5networks.f5_modules.bigip_firewall_dos_vector module – Manage attack vector configuration in an AFM DoS profile

Note

This module is part of the f5networks.f5_modules collection (version 1.16.0).

You might already have this collection installed if you are using the ansible package. It is not included in ansible-core. To check whether it is installed, run ansible-galaxy collection list.

To install it, use: ansible-galaxy collection install f5networks.f5_modules.

To use it in a playbook, specify: f5networks.f5_modules.bigip_firewall_dos_vector.

New in version 1.0.0: of f5networks.f5_modules

Synopsis

  • Manage the attack vector configuration in an AFM (Advanced Firewall Manager) DoS profile. In addition to the normal AFM DoS profile vectors, this module can manage the device-configuration vectors. See the module documentation for details about this method.

Requirements

The below requirements are needed on the host that executes this module.

  • BIG-IP >= v13.0.0

Parameters

Parameter

Comments

allow_advertisement

boolean

Specifies addresses that are identified for blacklisting are advertised to BGP routers.

Choices:

  • no

  • yes

attack_ceiling

string

Specifies the absolute maximum allowable for packets of this type.

This setting rate limits packets to the packets per second setting, when specified.

To set no hard limit and allow automatic thresholds to manage all rate limiting, set this to infinite.

attack_floor

string

Specifies packets per second to identify an attack.

These settings provide an absolute minimum of packets to allow before the attack is identified.

As the automatic detection thresholds adjust to traffic and CPU usage on the system over time, this attack floor becomes less relevant.

This value may not exceed the value in attack_floor.

auto_blacklist

boolean

Automatically blacklists detected bad actors.

To enable this parameter, the bad_actor_detection must also be enabled.

This parameter is not supported by the dns-malformed vector.

This parameter is not supported by the qdcount vector.

Choices:

  • no

  • yes

bad_actor_detection

boolean

Whether Bad Actor detection is enabled or disabled for a vector, if available.

This parameter must be enabled to enable the auto_blacklist parameter.

This parameter is not supported by the dns-malformed vector.

This parameter is not supported by the qdcount vector.

Choices:

  • no

  • yes

blacklist_detection_seconds

integer

Detection before blacklisting occurs, in seconds.

blacklist_duration

integer

Duration the blacklist will last, in seconds.

detection_threshold_eps

aliases: rate_threshold

string

Lists how many packets per second the system must discover in traffic in order to detect this attack.

detection_threshold_percent

aliases: rate_increase

string

Lists the threshold percent increase over time that the system must detect in traffic in order to detect this attack.

The tcp-half-open vector does not support this parameter.

mitigation_threshold_eps

aliases: rate_limit

string

Specifies the maximum number of this type of packet per second the system allows for a vector.

The system drops packets once the traffic level exceeds the rate limit.

name

string / required

Specifies the name of the vector to modify.

Vectors that ship with the device are “hard-coded” in that the list of vectors is known to the system and users cannot add new vectors. Users only manipulate the existing vectors; all of which are disabled by default.

When bad-icmp-chksum, configures the “Bad ICMP Checksum” Network Security vector.

When bad-icmp-frame, configures the “Bad ICMP Frame” Network Security vector.

When bad-igmp-frame, configures the “Bad IGMP Frame” Network Security vector.

When bad-ip-opt, configures the “IP Option Illegal Length” Network Security vector.

When bad-ipv6-hop-cnt, configures the “Bad IPv6 Hop Count” Network Security vector.

When bad-ipv6-ver, configures the “Bad IPv6 Version” Network Security vector.

When bad-sctp-chksum, configures the “Bad SCTP Checksum” Network Security vector.

When bad-tcp-chksum, configures the “Bad TCP Checksum” Network Security vector.

When bad-tcp-flags-all-clr, configures the “Bad TCP Flags (All Cleared)” Network Security vector.

When bad-tcp-flags-all-set, configures the “Bad TCP Flags (All Flags Set)” Network Security vector.

When bad-ttl-val, configures the “Bad IP TTL Value” Network Security vector.

When bad-udp-chksum, configures the “Bad UDP Checksum” Network Security vector.

When bad-udp-hdr, configures the “Bad UDP Header (UDP Length > IP Length or L2 Length)” Network Security vector.

When bad-ver, configures the “Bad IP Version” Network Security vector.

When arp-flood, configures the “ARP Flood” Network Security vector.

When flood, configures the “Single Endpoint Flood” Network Security vector.

When igmp-flood, configures the “IGMP Flood” Network Security vector.

When igmp-frag-flood, configures the “IGMP Fragment Flood” Network Security vector.

When ip-bad-src, configures the “Bad Source” Network Security vector.

When ip-err-chksum, configures the “IP Error Checksum” Network Security vector.

When ip-len-gt-l2-len, configures the “IP Length > L2 Length” Network Security vector.

When ip-other-frag, configures the “IP Fragment Error” Network Security vector.

When ip-overlap-frag, configures the “IP Fragment Overlap” Network Security vector.

When ip-short-frag, configures the “IP Fragment Too Small” Network Security vector.

When ip-uncommon-proto, configures the “IP Uncommon Proto” Network Security vector.

When ip-unk-prot, configures the “IP Unknown Protocol” Network Security vector.

When ipv4-mapped-ipv6, configures the “IPv4 Mapped IPv6” Network Security vector.

When ipv6-atomic-frag, configures the “IPv6 Atomic Fragment” Network Security vector.

When ipv6-bad-src, configures the “Bad IPv6 Addr” Network Security vector.

When ipv6-len-gt-l2-len, configures the “IPv6 Length > L2 Length” Network Security vector.

When ipv6-other-frag, configures the “IPv6 Fragment Error” Network Security vector.

When ipv6-overlap-frag, configures the “IPv6 Fragment Overlap” Network Security vector.

When ipv6-short-frag, configures the “IPv6 Fragment Too Small” Network Security vector.

When l2-len-ggt-ip-len, configures the “L2 Length >> IP Length” Network Security vector.

When l4-ext-hdrs-go-end, configures the “No L4 (Extension Headers Go To Or Past The End of Frame)” Network Security vector.

When land-attack, configures the “LAND Attack” Network Security vector.

When no-l4, configures the “No L4” Network Security vector.

When no-listener-match, configures the “No Listener Match” Network Security vector.

When non-tcp-connection, configures the “Non TCP Connection” Network Security vector.

When payload-len-ls-l2-len, configures the “Payload Length < L2 Length” Network Security vector.

When routing-header-type-0, configures the “Routing Header Type 0” Network Security vector.

When syn-and-fin-set, configures the “SYN && FIN Set” Network Security vector.

When tcp-ack-flood, configures the “TCP BADACK Flood” Network Security vector.

When tcp-hdr-len-gt-l2-len, configures the “TCP Header Length > L2 Length” Network Security vector.

When tcp-hdr-len-too-short, configures the “TCP Header Length Too Short (Length < 5)” Network Security vector.

When hdr-len-gt-l2-len, configures the “Header Length > L2 Length” Network Security vector.

When hdr-len-too-short, configures the “Header Length Too Short” Network Security vector.

When bad-ext-hdr-order, configures the “IPv6 Extended Headers Wrong order” Network Security vector.

When ext-hdr-too-large, configures the “IPv6 extension header too large” Network Security vector.

When hop-cnt-low, configures the “IPv6 hop count <= <tunable>” Network Security vector.

When host-unreachable, configures the “Host Unreachable” Network Security vector.

When icmp-frag, configures the “ICMP Fragment” Network Security vector.

When icmp-frame-too-large, configures the “ICMP Frame Too Large” Network Security vector.

When icmpv4-flood, configures the “ICMPv4 flood” Network Security vector.

When icmpv6-flood, configures the “ICMPv6 flood” Network Security vector.

When ip-frag-flood, configures the “IP Fragment Flood” Network Security vector.

When ip-low-ttl, configures the “TTL <= <tunable>” Network Security vector.

When ip-opt-frames, configures the “IP Option Frames” Network Security vector.

When ipv6-ext-hdr-frames, configures the “IPv6 Extended Header Frames” Network Security vector.

When ipv6-frag-flood, configures the “IPv6 Fragment Flood” Network Security vector.

When opt-present-with-illegal-len, configures the “Option Present With Illegal Length” Network Security vector.

When sweep, configures the “Sweep” Network Security vector.

When tcp-bad-urg, configures the “TCP Flags-Bad URG” Network Security vector.

When tcp-half-open, configures the “TCP Half Open” Network Security vector.

When tcp-opt-overruns-tcp-hdr, configures the “TCP Option Overruns TCP Header” Network Security vector.

When tcp-psh-flood, configures the “TCP PUSH Flood” Network Security vector.

When tcp-rst-flood, configures the “TCP RST Flood” Network Security vector.

When tcp-syn-flood, configures the “TCP SYN Flood” Network Security vector.

When tcp-syn-oversize, configures the “TCP SYN Oversize” Network Security vector.

When tcp-synack-flood, configures the “TCP SYN ACK Flood” Network Security vector.

When tcp-window-size, configures the “TCP Window Size” Network Security vector.

When tidcmp, configures the “TIDCMP” Network Security vector.

When too-many-ext-hdrs, configures the “Too Many Extension Headers” Network Security vector.

When dup-ext-hdr, configures the “IPv6 Duplicate Extension Headers” Network Security vector.

When fin-only-set, configures the “FIN Only Set” Network Security vector.

When ether-brdcst-pkt, configures the “Ethernet Broadcast Packet” Network Security vector.

When ether-multicst-pkt, configures the “Ethernet Multicast Packet” Network Security vector.

When ether-mac-sa-eq-da, configures the “Ethernet MAC Source Address == Destination Address” Network Security vector.

When udp-flood, configures the “UDP Flood” Network Security vector.

When unk-ipopt-type, configures the “Unknown Option Type” Network Security vector.

When unk-tcp-opt-type, configures the “Unknown TCP Option Type” Network Security vector.

When a, configures the “DNS A Query” DNS Protocol Security vector.

When aaaa, configures the “DNS AAAA Query” DNS Protocol Security vector.

When any, configures the “DNS ANY Query” DNS Protocol Security vector.

When axfr, configures the “DNS AXFR Query” DNS Protocol Security vector.

When cname, configures the “DNS CNAME Query” DNS Protocol Security vector.

When dns-malformed, configures the “dns-malformed” DNS Protocol Security vector.

When dns-nxdomain-query, configures the “dns-nxdomain-query” DNS Protocol Security vector.

When dns-response-flood, configures the “dns-response-flood” DNS Protocol Security vector.

When dns-oversize, configures the “dns-oversize” DNS Protocol Security vector.

When ixfr, configures the “DNS IXFR Query” DNS Protocol Security vector.

When mx, configures the “DNS MX Query” DNS Protocol Security vector.

When ns, configures the “DNS NS Query” DNS Protocol Security vector.

When other, configures the “DNS OTHER Query” DNS Protocol Security vector.

When ptr, configures the “DNS PTR Query” DNS Protocol Security vector.

When qdcount, configures the “DNS QDCOUNT Query” DNS Protocol Security vector.

When soa, configures the “DNS SOA Query” DNS Protocol Security vector.

When srv, configures the “DNS SRV Query” DNS Protocol Security vector.

When txt, configures the “DNS TXT Query” DNS Protocol Security vector.

When ack, configures the “SIP ACK Method” SIP Protocol Security vector.

When bye, configures the “SIP BYE Method” SIP Protocol Security vector.

When cancel, configures the “SIP CANCEL Method” SIP Protocol Security vector.

When invite, configures the “SIP INVITE Method” SIP Protocol Security vector.

When message, configures the “SIP MESSAGE Method” SIP Protocol Security vector.

When notify, configures the “SIP NOTIFY Method” SIP Protocol Security vector.

When options, configures the “SIP OPTIONS Method” SIP Protocol Security vector.

When other, configures the “SIP OTHER Method” SIP Protocol Security vector.

When prack, configures the “SIP PRACK Method” SIP Protocol Security vector.

When publish, configures the “SIP PUBLISH Method” SIP Protocol Security vector.

When register, configures the “SIP REGISTER Method” SIP Protocol Security vector.

When sip-malformed, configures the “sip-malformed” SIP Protocol Security vector.

When subscribe, configures the “SIP SUBSCRIBE Method” SIP Protocol Security vector.

When uri-limit, configures the “uri-limit” SIP Protocol Security vector.

Choices:

  • bad-icmp-chksum

  • bad-icmp-frame

  • bad-igmp-frame

  • bad-ip-opt

  • bad-ipv6-hop-cnt

  • bad-ipv6-ver

  • bad-sctp-chksum

  • bad-tcp-chksum

  • bad-tcp-flags-all-clr

  • bad-tcp-flags-all-set

  • bad-ttl-val

  • bad-udp-chksum

  • bad-udp-hdr

  • bad-ver

  • arp-flood

  • flood

  • igmp-flood

  • igmp-frag-flood

  • ip-bad-src

  • ip-err-chksum

  • ip-len-gt-l2-len

  • ip-other-frag

  • ip-overlap-frag

  • ip-short-frag

  • ip-uncommon-proto

  • ip-unk-prot

  • ipv4-mapped-ipv6

  • ipv6-atomic-frag

  • ipv6-bad-src

  • ipv6-len-gt-l2-len

  • ipv6-other-frag

  • ipv6-overlap-frag

  • ipv6-short-frag

  • l2-len-ggt-ip-len

  • l4-ext-hdrs-go-end

  • land-attack

  • no-l4

  • no-listener-match

  • non-tcp-connection

  • payload-len-ls-l2-len

  • routing-header-type-0

  • syn-and-fin-set

  • tcp-ack-flood

  • tcp-hdr-len-gt-l2-len

  • tcp-hdr-len-too-short

  • hdr-len-gt-l2-len

  • hdr-len-too-short

  • bad-ext-hdr-order

  • ext-hdr-too-large

  • hop-cnt-low

  • host-unreachable

  • icmp-frag

  • icmp-frame-too-large

  • icmpv4-flood

  • icmpv6-flood

  • ip-frag-flood

  • ip-low-ttl

  • ip-opt-frames

  • ipv6-ext-hdr-frames

  • ipv6-frag-flood

  • opt-present-with-illegal-len

  • sweep

  • tcp-bad-urg

  • tcp-half-open

  • tcp-opt-overruns-tcp-hdr

  • tcp-psh-flood

  • tcp-rst-flood

  • tcp-syn-flood

  • tcp-syn-oversize

  • tcp-synack-flood

  • tcp-window-size

  • tidcmp

  • too-many-ext-hdrs

  • dup-ext-hdr

  • fin-only-set

  • ether-brdcst-pkt

  • ether-multicst-pkt

  • ether-mac-sa-eq-da

  • udp-flood

  • unk-ipopt-type

  • unk-tcp-opt-type

  • a

  • aaaa

  • any

  • axfr

  • cname

  • dns-malformed

  • dns-nxdomain-query

  • dns-response-flood

  • dns-oversize

  • ixfr

  • mx

  • ns

  • other

  • ptr

  • qdcount

  • soa

  • srv

  • txt

  • ack

  • bye

  • cancel

  • invite

  • message

  • notify

  • options

  • other

  • prack

  • publish

  • register

  • sip-malformed

  • subscribe

  • uri-limit

partition

string

Device partition to manage resources on.

Default: “Common”

per_source_ip_detection_threshold

string

Specifies the number of packets per second to identify an IP address as a bad actor.

per_source_ip_mitigation_threshold

string

Specifies the rate limit applied to a source IP that is identified as a bad actor.

profile

string / required

Specifies the name of the profile to manage vectors in.

The name device-config is reserved for use by this module.

Vectors can be managed in either DoS Profiles or Device Configuration. By specifying a profile of ‘device-config’, this module will specifically tailor configuration of the provided vectors to the Device Configuration.

provider

dictionary

added in 1.0.0 of f5networks.f5_modules

A dict object containing connection details.

auth_provider

string

Configures the auth provider for to obtain authentication tokens from the remote device.

This option is really used when working with BIG-IQ devices.

no_f5_teem

boolean

If yes, TEEM telemetry data is not sent to F5.

You may omit this option by setting the environment variable F5_TELEMETRY_OFF.

Previously used variable F5_TEEM is deprecated as its name was confusing.

Choices:

  • no ← (default)

  • yes

password

aliases: pass, pwd

string / required

The password for the user account used to connect to the BIG-IP.

You may omit this option by setting the environment variable F5_PASSWORD.

server

string / required

The BIG-IP host.

You may omit this option by setting the environment variable F5_SERVER.

server_port

integer

The BIG-IP server port.

You may omit this option by setting the environment variable F5_SERVER_PORT.

Default: 443

timeout

integer

Specifies the timeout in seconds for communicating with the network device for either connecting or sending commands. If the timeout is exceeded before the operation is completed, the module will error.

transport

string

Configures the transport connection to use when connecting to the remote device.

Choices:

  • rest ← (default)

user

string / required

The username to connect to the BIG-IP with. This user must have administrative privileges on the device.

You may omit this option by setting the environment variable F5_USER.

validate_certs

boolean

If no, SSL certificates are not validated. Use this only on personally controlled sites using self-signed certificates.

You may omit this option by setting the environment variable F5_VALIDATE_CERTS.

Choices:

  • no

  • yes ← (default)

simulate_auto_threshold

boolean

Specifies results of the current automatic thresholds are logged, though manual thresholds are enforced, and no action is taken on automatic thresholds.

The sweep vector does not support this parameter.

Choices:

  • no

  • yes

state

string

When state is mitigate, ensures the vector enforces limits and thresholds.

When state is detect-only, ensures the vector does not enforce limits and thresholds (rate limiting, dropping, etc), but is still tracked in logs and statistics.

When state is disabled, ensures the vector does not enforce limits and thresholds, but is still tracked in logs and statistics.

When state is learn-only, ensures the vector does not “detect” any attacks. Only learning and stat collecting is performed.

Choices:

  • mitigate

  • detect-only

  • learn-only

  • disabled

threshold_mode

string

The dns-malformed vector does not support fully-automatic or stress-based-mitigation for this parameter.

The qdcount vector does not support fully-automatic or stress-based-mitigation for this parameter.

The sip-malformed vector does not support fully-automatic or stress-based-mitigation for this parameter.

Choices:

  • manual

  • stress-based-mitigation

  • fully-automatic

Notes

Note

  • For more information on using Ansible to manage F5 Networks devices see https://www.ansible.com/integrations/networks/f5.

  • Requires BIG-IP software version >= 12.

  • The F5 modules only manipulate the running configuration of the F5 product. To ensure that BIG-IP specific configuration persists to disk, be sure to include at least one task that uses the f5networks.f5_modules.bigip_config module to save the running configuration. Refer to the module’s documentation for the correct usage of the module to save your running configuration.

Examples

- name: Enable DNS AAAA vector mitigation
  bigip_firewall_dos_vector:
    name: aaaa
    state: mitigate
    provider:
      password: secret
      server: lb.mydomain.com
      user: admin
  delegate_to: localhost

Return Values

Common return values are documented here, the following are the fields unique to this module:

Key

Description

allow_advertisement

boolean

The new Allow External Advertisement setting.

Returned: changed

Sample: true

attack_ceiling

string

The new Attack Ceiling EPS setting.

Returned: changed

Sample: “infinite”

attack_floor

string

The new Attack Floor EPS setting.

Returned: changed

Sample: “infinite”

auto_blacklist

boolean

The new Auto Blacklist setting.

Returned: changed

Sample: false

bad_actor_detection

boolean

The new Bad Actor Detection setting.

Returned: changed

Sample: false

blacklist_category

string

The new Category Name setting.

Returned: changed

Sample: “/Common/cloud_provider_networks”

blacklist_detection_seconds

integer

The new Sustained Attack Detection Time setting.

Returned: changed

Sample: 60

blacklist_duration

integer

The new Category Duration Time setting.

Returned: changed

Sample: 14400

detection_threshold_eps

string

The new Detection Threshold EPS setting.

Returned: changed

Sample: “infinite”

detection_threshold_percent

string

The new Detection Threshold Percent setting.

Returned: changed

Sample: “infinite”

mitigation_threshold_eps

string

The new Mitigation Threshold EPS setting.

Returned: changed

Sample: “infinite”

per_source_ip_detection_threshold

string

The new Per Source IP Detection Threshold EPS setting.

Returned: changed

Sample: 23

per_source_ip_mitigation_threshold

string

The new Per Source IP Mitigation Threshold EPS setting.

Returned: changed

Sample: “infinite”

simulate_auto_threshold

boolean

The new Simulate Auto Threshold setting.

Returned: changed

Sample: false

state

string

The new state of the vector.

Returned: changed

Sample: “mitigate”

threshold_mode

string

The new Mitigation Threshold EPS setting.

Returned: changed

Sample: “infinite”

Authors

  • Tim Rupp (@caphrim007)

  • Nitin Khanna (@nitinthewiz)