towerops/lib/towerops_web/endpoint.ex
Graham McIntire 4d73e77f3a
Add 404-based brute force protection system
Implements automated detection and blocking of IPs exhibiting scanning behavior (5+ unique 404s within 1 minute).

Key features:
- Progressive ban escalation (5 min → 1 hour → permanent)
- CIDR range and exact IP whitelisting
- Redis-backed 404 path tracking with 60s TTL
- Cloudflare WAF integration for permanent bans
- Admin UI for whitelist and blocked IP management
- Oban cron jobs for cleanup (expired bans, stale violations)
- ETS caching for whitelist performance

Components:
- Plug: ToweropsWeb.Plugs.BruteForceProtection
- Context: Towerops.Security.BruteForce
- Schemas: IpBlock, IpWhitelist
- Workers: CloudflareBanWorker, ExpiredBanCleanupWorker, StaleViolationCleanupWorker
- Admin UI: /admin/security (superuser only)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
2026-02-10 16:31:48 -06:00

86 lines
2.6 KiB
Elixir

defmodule ToweropsWeb.Endpoint do
use Phoenix.Endpoint, otp_app: :towerops
# The session will be stored in the cookie and signed,
# this means its contents can be read but not tampered with.
# Set :encryption_salt if you would also like to encrypt it.
@session_options [
store: :cookie,
key: "_towerops_key",
signing_salt: "hrDZxLhd",
same_site: "Lax"
]
socket "/live", Phoenix.LiveView.Socket,
websocket: [connect_info: [session: @session_options]],
longpoll: [connect_info: [session: @session_options]]
socket "/socket/agent", ToweropsWeb.AgentSocket,
websocket: [connect_info: [:peer_data]],
longpoll: false
# Serve at "/" the static files from "priv/static" directory.
#
# When code reloading is disabled (e.g., in production),
# the `gzip` option is enabled to serve compressed
# static files generated by running `phx.digest`.
plug Plug.Static,
at: "/",
from: :towerops,
gzip: not code_reloading?,
only: ToweropsWeb.static_paths(),
raise_on_missing_only: code_reloading?
# Code reloading can be explicitly enabled under the
# :code_reloader configuration of your endpoint.
if code_reloading? do
socket "/phoenix/live_reload/socket", Phoenix.LiveReloader.Socket
plug Phoenix.LiveReloader
plug Phoenix.CodeReloader
plug Phoenix.Ecto.CheckRepoStatus, otp_app: :towerops
end
plug Phoenix.LiveDashboard.RequestLogger,
param_key: "request_logger",
cookie_key: "request_logger"
plug Plug.RequestId
plug ToweropsWeb.Plugs.RemoteIpLogger
plug ToweropsWeb.Plugs.BruteForceProtection
plug ToweropsWeb.Plugs.SecurityHeaders
plug Plug.Telemetry,
event_prefix: [:phoenix, :endpoint],
log: {__MODULE__, :log_level, []}
plug Plug.Parsers,
parsers: [:urlencoded, :multipart, :json],
pass: ["*/*"],
body_reader: {ToweropsWeb.Endpoint.BodyReader, :read_body, []},
json_decoder: Phoenix.json_library()
# Custom body reader that skips parsing for protobuf content type
defmodule BodyReader do
@moduledoc false
def read_body(conn, opts) do
case Plug.Conn.get_req_header(conn, "content-type") do
["application/x-protobuf" | _] ->
# Don't parse protobuf, let the controller handle it
{:ok, "", conn}
_ ->
# Use default body reader for other content types
Plug.Conn.read_body(conn, opts)
end
end
end
plug Plug.MethodOverride
plug Plug.Head
plug Plug.Session, @session_options
plug ToweropsWeb.Router
# Disable logging for health check endpoint to reduce log noise from K8s probes
def log_level(%{path_info: ["health"]}), do: false
def log_level(_), do: :info
end