mirror of
https://github.com/ntop/ntopng.git
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3baa932a01
Migrates alert_malicious_signature alert_elephant_local_to_remote alert_elephant_remote_to_local Migrates long_lived Migrates alert_flow_blocked Migrates alert_tls_old_version Migrates alert_tls_certificate_mismatch Migrates alert_tls_certificate_expired Migrates alert_tls_unsafe_ciphers Migrates alert_tls_certificate_selfsigned Migrates alert_potentially_dangerous_protocol Migrates alert_snmp_device_reset Migrates alert_port_mac_changed Migrates alert_port_duplexstatus_change Mirgates alert_port_errors Migrates alert_port_status_change Migrates alert_port_load_threshold_exceeded Migrates alert_data_exfiltration Migrates alert_dns_data_exfiltration Migrates alert_suspicious_tcp_probing alert_suspicious_tcp_syn_probing alert_tcp_connection_refused Migrates alert_dns_invalid_query Migrates alert_attack_mitigation_via_snmp Migrates alert_lateral_movement Migrates alert_periodicity_update Migrates alert_dns_positive_error_ratio Migrates alert_iec104_error
197 lines
9.6 KiB
Lua
197 lines
9.6 KiB
Lua
--
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-- (C) 2020 - ntop.org
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--
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-- ##############################################
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-- This is the ZERO pen used for ntopng builtin alerts found in the alert_keys.ntopng table below
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-- Some ZERO PENs are also available to users when creating user plugins. They are specified in the alert_keys.user table below.
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-- Other PENs may be specified by users when creating custom plugins.
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local NO_PEN = 0
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-- ##############################################
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local alert_keys = {
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ntopng = {
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alert_blacklisted_country = {NO_PEN, 1},
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alert_broadcast_domain_too_large = {NO_PEN, 2},
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alert_device_connection = {NO_PEN, 3},
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alert_device_disconnection = {NO_PEN, 4},
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alert_device_protocol_not_allowed = {NO_PEN, 5},
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alert_dropped_alerts = {NO_PEN, 6},
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alert_external = {NO_PEN, 7},
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alert_flow_blacklisted = {NO_PEN, 8},
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alert_flow_blocked = {NO_PEN, 9},
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alert_flow_misbehaviour = {NO_PEN, 10},
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alert_flows_flood = {NO_PEN, 11},
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alert_ghost_network = {NO_PEN, 12},
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alert_host_pool_connection = {NO_PEN, 13},
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alert_host_pool_disconnection = {NO_PEN, 14},
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alert_influxdb_dropped_points = {NO_PEN, 15},
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alert_influxdb_error = {NO_PEN, 16},
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alert_influxdb_export_failure = {NO_PEN, 17},
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alert_internals = {NO_PEN, 18},
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alert_ip_outsite_dhcp_range = {NO_PEN, 19},
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alert_list_download_failed = {NO_PEN, 20},
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alert_login_failed = {NO_PEN, 21},
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alert_mac_ip_association_change = {NO_PEN, 22},
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alert_malicious_signature = {NO_PEN, 23},
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alert_misbehaving_flows_ratio = {NO_PEN, 24},
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alert_misconfigured_app = {NO_PEN, 25},
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alert_new_device = {NO_PEN, 26},
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alert_nfq_flushed = {NO_PEN, 27},
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alert_none = {NO_PEN, 28},
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alert_periodic_activity_not_executed = {NO_PEN, 29},
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alert_am_threshold_cross = {NO_PEN, 30},
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alert_port_duplexstatus_change = {NO_PEN, 31},
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alert_port_errors = {NO_PEN, 32},
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alert_port_load_threshold_exceeded = {NO_PEN, 33},
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alert_port_mac_changed = {NO_PEN, 34},
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alert_port_status_change = {NO_PEN, 35},
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alert_potentially_dangerous_protocol = {NO_PEN, 36},
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alert_process_notification = {NO_PEN, 37},
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alert_quota_exceeded = {NO_PEN, 38},
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alert_remote_to_remote = {NO_PEN, 39},
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alert_request_reply_ratio = {NO_PEN, 40},
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alert_slow_periodic_activity = {NO_PEN, 41},
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alert_slow_purge = {NO_PEN, 42},
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alert_snmp_device_reset = {NO_PEN, 43},
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alert_snmp_topology_changed = {NO_PEN, 44},
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alert_suspicious_activity = {NO_PEN, 45},
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alert_tcp_syn_flood = {NO_PEN, 46},
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alert_tcp_syn_scan = {NO_PEN, 47},
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alert_test_failed = {NO_PEN, 48},
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alert_threshold_cross = {NO_PEN, 49},
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alert_too_many_drops = {NO_PEN, 50},
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alert_udp_unidirectional = {NO_PEN, 51},
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alert_unresponsive_device = {NO_PEN, 52},
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alert_user_activity = {NO_PEN, 53},
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alert_user_script_calls_drops = {NO_PEN, 54},
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alert_web_mining = {NO_PEN, 55},
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alert_connection_issues = {NO_PEN, 56},
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alert_suspicious_file_transfer = {NO_PEN, 57},
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alert_known_proto_on_non_std_port = {NO_PEN, 58},
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alert_host_log = {NO_PEN, 59},
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alert_attack_mitigation_via_snmp = {NO_PEN, 60},
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alert_iec104_error = {NO_PEN, 61},
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alert_flow_risk = {NO_PEN, 62},
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alert_unexpected_dns_server = {NO_PEN, 63},
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alert_unexpected_smtp_server = {NO_PEN, 64},
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alert_unexpected_dhcp_server = {NO_PEN, 65},
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alert_unexpected_ntp_server = {NO_PEN, 66},
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alert_too_many_retransmissions = {NO_PEN, 67}, -- No longer used
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alert_lateral_movement = {NO_PEN, 68},
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alert_list_download_succeeded = {NO_PEN, 69},
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alert_no_if_activity = {NO_PEN, 70}, -- scripts/plugins/alerts/internals/no_if_activity
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alert_zero_tcp_window = {NO_PEN, 71},
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alert_flow_low_goodput = {NO_PEN, 72},
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alert_unexpected_new_device = {NO_PEN, 73}, -- scripts/plugins/alerts/security/unexpected_new_device
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alert_shell_script_executed = {NO_PEN, 74}, -- scripts/plugins/endpoints/shell_alert_endpoint
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alert_periodicity_update = {NO_PEN, 75}, -- pro/scripts/enterprise_l_plugins/alerts/network/periodicity_update
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alert_dns_positive_error_ratio = {NO_PEN, 76}, -- pro/scripts/enterprise_l_plugins/alerts/network/dns_positive_error_ratio
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alert_elephant_local_to_remote = {NO_PEN, 77},
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alert_elephant_remote_to_local = {NO_PEN, 78},
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alert_longlived = {NO_PEN, 79},
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alert_tls_old_protocol_version = {NO_PEN, 80},
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alert_tls_certificate_mismatch = {NO_PEN, 81},
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alert_tls_certificate_expired = {NO_PEN, 82},
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alert_tls_unsafe_ciphers = {NO_PEN, 83},
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alert_tls_certificate_selfsigned = {NO_PEN, 84},
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alert_data_exfiltration = {NO_PEN, 85},
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alert_dns_data_exfiltration = {NO_PEN, 86},
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alert_tcp_connection_refused = {NO_PEN, 87},
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alert_suspicious_tcp_syn_probing = {NO_PEN, 88},
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alert_suspicious_tcp_probing = {NO_PEN, 89},
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alert_dns_invalid_query = {NO_PEN, 90},
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-- Add here additional keys for alerts generated
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-- by ntopng plugins
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-- WARNING: make sure integers do NOT OVERLAP with
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-- user alerts
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},
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user = {
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alert_user_01 = {NO_PEN, 32768},
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alert_user_02 = {NO_PEN, 32769},
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alert_user_03 = {NO_PEN, 32770},
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alert_user_04 = {NO_PEN, 32771},
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alert_user_05 = {NO_PEN, 32772},
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-- Add here additional keys generated by
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-- user plugin
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},
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}
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-- ##############################################
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-- A table to keep the reverse mapping between integer alert keys and string alert keys
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local alert_id_to_alert_key = {}
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for _, ntopng_user in ipairs({"ntopng", "user"}) do
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for cur_key_string, cur_key_array in pairs(alert_keys[ntopng_user]) do
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local cur_pen, cur_id = cur_key_array[1], cur_key_array[2]
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if not alert_id_to_alert_key[cur_pen] then
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alert_id_to_alert_key[cur_pen] = {}
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end
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alert_id_to_alert_key[cur_pen][cur_id] = cur_key_string
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end
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end
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-- ##############################################
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-- @brief Parse an alert key, check if it is compliant with the expected format, and returns the parsed key and a status message
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--
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-- Alert keys must be specified as an array of two numbers as {<PEN>, <pen_key>}:
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-- - <PEN> is an integer greater than or equal to zero and less than 65535 and can be used to uniquely identify an enterprise.
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-- A <PEN> equal to zero is reserved for ntopng builtin alerts.
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-- - <pen_key> is an integer greater than or equal to zero and less than 65535 which is combined with <PEN>
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-- to uniquely identify an alert. The resulting alert key is a 32bit integer where the 16 most significant bits
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-- reserved for the <PEN> and the 16 least significant bits reserved for the <pen_key>.
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--
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-- Any other format is discarded and the parse function fails.
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--
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-- @param key The alert key to be parsed.
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-- Examples:
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-- `alert_keys.ntopng.alert_connection_issues`
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-- `alert_keys.user.alert_user_01`
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-- `{312, 513}`.
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-- `{0, alert_keys.user.alert_user_01}`. In this case where PEN equals zero only the <pen_key> is taken
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--
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-- @return An integer corresponding to the parsed alert key and a status message which equals "OK" when no error occurred during parsing.
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--
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function alert_keys.parse_alert_key(key)
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local parsed_alert_key
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local status = "OK"
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if type(key) == "table" and #key == 2 then
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-- A table, let's parse it with PEN and key
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local pen, pen_key = key[1], key[2]
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if not type(pen) == "number" or pen < 0 or pen >= 0xFFFF then
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-- PEN is out of bounds or not a number
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status = "Invalid PEN specified. PEN must be between 0 and 65535."
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elseif not type(pen_key) == "number" or pen_key < 0 or pen_key >= 0xFFFF then
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-- pen_key is out of bounds or not a number
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status = "Invalid alert key specified. Alert key must be between 0 and 65535."
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elseif pen == 0 then
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-- PEN is zero, this is a builtin key and we need to verify its exsistance
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if not alert_id_to_alert_key[pen] or not alert_id_to_alert_key[pen][pen_key] then
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status = "Alert key specified is not among the available alert keys."
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else
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parsed_alert_key = pen_key
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end
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else
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-- PEN in the 16 MSB and pen_key in the 16 LSB
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parsed_alert_key = (pen << 16) + pen_key
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end
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else
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status = "Unexpected alert key type."
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end
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return parsed_alert_key, status
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end
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-- ##############################################
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return alert_keys
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-- ##############################################
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