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alex
2026-07-26 16:04:51 +05:30
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.gitignore
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*.py[codz]
__pycache__/
.mypy_cache/
.pytest_cache/
.ruff_cache/
.pdm-python
networkcheck/main.py
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import json
import logging
import socket
import boto3
import dns.resolver
import requests
from ping3 import ping
logging.basicConfig(level=logging.INFO, format="%(asctime)s - %(levelname)s - %(message)s")
logger = logging.getLogger(__name__)
expected_ipv4 = ({
"nas.local": "192.168.1.10",
"homeassistant.local": "192.168.1.11"
})
public_nameserver_ipv4 = "8.8.8.8" # Google DNS
local_nameserver_ipv4 = "192.168.1.10" # NAS IPv4 DNS
connectivity_test_addresses = (
"192.168.1.1", # Router
"192.168.1.10", # NAS
"192.168.1.11", # Home Assistant on raspberry pi
"192.168.1.21", # camera
"192.168.1.22", # camera
"192.168.1.23", # camera
"192.168.1.24", # camera
"192.168.1.25", # camera
"192.168.1.26", # camera
"192.168.1.27", # camera
"192.168.1.28" # camera
)
open_ports = ({
"192.168.1.1": [80], # Router
"192.168.1.10": [80, 443, 5000, 5001], # NAS
"192.168.1.11": [8123], # Home Assistant on Raspberry Pi
"192.168.1.21": [80, 443], # camera
"192.168.1.22": [80, 443], # camera
"192.168.1.23": [80, 443], # camera
"192.168.1.24": [80, 443], # camera
"192.168.1.25": [80, 443], # camera
"192.168.1.26": [80, 443], # camera
"192.168.1.27": [80, 443], # camera
"192.168.1.28": [80, 443], # camera
})
local_dns_test_addresses = (
"google.com",
"homeassistant.local",
"nas.local",
"homeassistant.vaishnavi.house",
"nas.vaishnavi.house",
"vaishnavi.house",
"rossmanith.family"
)
public_dns_test_addresses = (
"homeassistant.vaishnavi.house",
"nas.vaishnavi.house",
"vaishnavi.house",
"rossmanith.family"
)
webserver_test_urls = (
"https://rossmanith.family",
"https://vaishnavi.house",
"https://nas.vaishnavi.house",
"https://homeassistant.vaishnavi.house",
)
def main():
logger.info("Starting network check...")
access_key = "AKIAWVVF4JB3NPKIZGG5"
secret_key = "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"
lambda_client = boto3.client("lambda", region_name="eu-west-1", aws_access_key_id=access_key, aws_secret_access_key=secret_key)
payload = {
"domains": ["rossmanith.family", "vaishnavi.house"]
}
response = lambda_client.invoke(
FunctionName="arn:aws:lambda:eu-west-1:458835642486:function:domainCheck",
InvocationType="RequestResponse",
Payload=json.dumps(payload)
)
result = json.loads(response["Payload"].read())
print(json.dumps(result, indent=2))
print()
logger.info("Checking IPv4 addresses...")
for host, expected_ip in expected_ipv4.items():
check_ipv4(host, expected_ip)
print()
logger.info("Checking connectivity...")
for addr in connectivity_test_addresses:
ping_check(addr)
print()
logger.info("Checking open ports...")
for addr, ports in open_ports.items():
for port in ports:
check_port(addr, port)
print()
public_ip = requests.get("https://api.ipify.org").text
logger.info("Public IP: %s", public_ip)
print()
logger.info("Checking DNS resolution of local nameserver %s...", local_nameserver_ipv4)
for addr in local_dns_test_addresses:
check_dns(local_nameserver_ipv4, addr)
print()
logger.info("Checking DNS resolution of public nameserver %s...", public_nameserver_ipv4)
for addr in public_dns_test_addresses:
check_dns(public_nameserver_ipv4, addr)
print()
logger.info("Checking webserver availability from LAN...")
for url in webserver_test_urls:
check_webserver_lan(url)
print()
logger.info("Checking webserver availability from WAN...")
for url in webserver_test_urls:
check_webserver_wan(url)
def check_ipv4(host, expected_ip):
"""Check if the host resolves to the expected IPv4 address."""
try:
resolved_ip = socket.gethostbyname(host)
if resolved_ip == expected_ip:
logger.info("✅ %s has correct IP: %s", host, resolved_ip)
else:
logger.warning("❌ %s IP mismatch: %s", host, resolved_ip)
except socket.gaierror as e:
logger.error("❌ %s DNS resolution error: %s", host, e)
def ping_check(host_ip):
"""Ping the host to check connectivity."""
try:
ping_time = ping(host_ip, timeout=2)
if ping_time is not None:
logger.info("✅ %s reachable (ping time: %.2f ms)", host_ip, ping_time * 1000)
except Exception as e:
logger.error("❌ %s unreachable: %s", host_ip, e)
def check_dns(nameserver, addr):
"""Check DNS resolution."""
resolver = dns.resolver.Resolver()
resolver.nameservers = [nameserver]
try:
answer_ = resolver.resolve(addr, "A")
logger.info("✅ DNS %s can resolve %s: %s", nameserver, addr, [r.to_text() for r in answer_])
except Exception as e:
logger.error("❌ DNS %s cannot resolve %s: %s", nameserver, addr, e)
def check_webserver_lan(url):
try:
response = requests.get(url, timeout=5, verify=True)
if response.ok:
logger.info("✅ %s responded with %d", url, response.status_code)
else:
logger.warning("⚠️ %s responded with %d", url, response.status_code)
except requests.exceptions.SSLError as e:
logger.error("❌ SSL certificate error for %s: %s", url, e)
except requests.exceptions.ConnectionError:
logger.error("❌ Connection failed: %s not reachable.", url)
except requests.exceptions.Timeout:
logger.error("❌ Request timed out for %s.", url)
except Exception as e:
logger.error("❌ Unexpected error for %s: %s", url, e)
def check_webserver_wan(domain):
try:
# Use isup.me style check
check_url = f"https://isitup.org/{domain.replace('https://','')}.json"
resp = requests.get(check_url, timeout=10).json()
if resp["status_code"] == 1:
print(f"✅ {domain} is externally reachable")
else:
print(f"❌ {domain} is NOT reachable externally")
except Exception as e:
print(f"⚠️ Error checking {domain}: {e}")
def check_port(addr, port):
"""Check if a specific port is open on the host."""
try:
with socket.create_connection((addr, port), timeout=2):
logger.info("✅ %s:%d is open", addr, port)
except (socket.timeout, ConnectionRefusedError):
logger.warning("⚠️ %s:%d is closed or filtered", addr, port)
except Exception as e:
logger.error("❌ Error checking %s:%d: %s", addr, port, e)
if __name__ == "__main__":
main()
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[[package]]
name = "urllib3"
version = "2.7.0"
requires_python = ">=3.10"
summary = "HTTP library with thread-safe connection pooling, file post, and more."
groups = ["default"]
files = [
{file = "urllib3-2.7.0-py3-none-any.whl", hash = "sha256:9fb4c81ebbb1ce9531cce37674bbc6f1360472bc18ca9a553ede278ef7276897"},
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pyproject.toml
+15
View File
@@ -0,0 +1,15 @@
[project]
name = "networkcheck"
version = "0.1.0"
description = "Default template for PDM package"
authors = [
{name = "Alexander Rossmanith", email = ""},
]
dependencies = ["dnspython>=2.8.0", "ping3>=5.1.5", "requests>=2.34.2", "boto3>=1.43.14"]
requires-python = "==3.14.*"
readme = "README.md"
license = {text = "MIT"}
[tool.pdm]
distribution = false