mirror of
https://github.com/ntop/ntopng.git
synced 2026-05-01 00:19:33 +00:00
80 lines
3.2 KiB
Lua
80 lines
3.2 KiB
Lua
--
|
|
-- (C) 2020 - ntop.org
|
|
--
|
|
|
|
local alert_keys = require "alert_keys"
|
|
local format_utils = require "format_utils"
|
|
local json = require("dkjson")
|
|
|
|
-- #######################################################
|
|
|
|
-- @brief Prepare an alert table used to generate the alert
|
|
-- @param alert_severity A severity as defined in `alert_severities`
|
|
-- @param alert_granularity A granularity as defined in `alert_consts.alerts_granularities`
|
|
-- @param last_error A table containing the last lateral movement error, e.g.,
|
|
-- {"event":"create","shost":"192.168.2.153","dhost":"224.0.0.68","dport":1968,"vlan_id":0,"l4":17,"l7":0,"first_seen":1602488355,"last_seen":1602488355,"num_uses":1}
|
|
-- @return A table with the alert built
|
|
local function createPeriodicityUpdateError(alert_severity, alert_granularity, last_error, created_or_removed)
|
|
-- Create a subtype, to avoid merging multiple lateral movement alerts together
|
|
local alert_subtype = last_error.shost .. "/" .. last_error.dhost .. "/" .. last_error.dport .. "/" .. last_error.l4 .. "/" .. last_error.l7
|
|
local threshold_type = {
|
|
alert_severity = alert_severity,
|
|
alert_subtype = alert_subtype,
|
|
alert_granularity = alert_granularity,
|
|
alert_type_params = {
|
|
error_msg = last_error,
|
|
created_or_removed = created_or_removed
|
|
},
|
|
}
|
|
|
|
return threshold_type
|
|
end
|
|
|
|
-- #######################################################
|
|
|
|
local function formatPeriodicityUpdateErrorMessage(ifid, alert, status)
|
|
local msg = status.error_msg
|
|
local vlan_id = msg.vlan_id or 0
|
|
local client = {host = msg.shost, vlan = vlan_id}
|
|
local server = {host = msg.dhost, vlan = vlan_id}
|
|
local rsp
|
|
|
|
if status.created_or_removed == "create" then
|
|
rsp = "flow: "
|
|
rsp = rsp .. hostinfo2detailshref(client, nil, hostinfo2label(client))..
|
|
" <i class=\"fas fa-exchange-alt fa-lg\" aria-hidden=\"true\" data-original-title=\"\" title=\"\"></i> " ..
|
|
hostinfo2detailshref(server, nil, hostinfo2label(server))..
|
|
" ["..i18n("port")..": "..msg.dport.."]"
|
|
|
|
rsp = rsp .. "["..i18n("application")..": "..interface.getnDPIProtoName(msg.l7).."]"
|
|
if not isEmptyString(msg.info) then
|
|
rsp = rsp .. "[" .. msg.info .. "]"
|
|
end
|
|
rsp = rsp .. ", is now periodic (frequency " .. msg["frequency"] .. " seconds)"
|
|
else
|
|
rsp = "Periodic flow ended: "
|
|
rsp = rsp .. hostinfo2detailshref(client, nil, hostinfo2label(client))..
|
|
" <i class=\"fas fa-exchange-alt fa-lg\" aria-hidden=\"true\" data-original-title=\"\" title=\"\"></i> " ..
|
|
hostinfo2detailshref(server, nil, hostinfo2label(server))..
|
|
" ["..i18n("port")..": "..msg.dport.."]"
|
|
|
|
rsp = rsp .. "["..i18n("application")..": "..interface.getnDPIProtoName(msg.l7).."]"
|
|
if not isEmptyString(msg.info) then
|
|
rsp = rsp .. "[" .. msg.info .. "]"
|
|
end
|
|
end
|
|
|
|
|
|
|
|
return(rsp)
|
|
end
|
|
|
|
-- #######################################################
|
|
|
|
return {
|
|
alert_key = alert_keys.ntopng.alert_periodicity_update,
|
|
i18n_title = "alerts_dashboard.alert_periodicity_update",
|
|
i18n_description = formatPeriodicityUpdateErrorMessage,
|
|
icon = "fas fa-arrows-alt-h",
|
|
creator = createPeriodicityUpdateError,
|
|
}
|