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Code Issues Releases Wiki Activity

Improve matching of ufw output. Reuse network service list. Improve messages

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This commit is contained in:
Michael Kroes 2016-04-07 16:03:28 +02:00
parent 42f2e983e5
commit 736b3de221
1 changed files with 34 additions and 39 deletions
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73
management/status_checks.py
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@ -18,6 +18,29 @@ from mailconfig import get_mail_domains, get_mail_aliases
from utils import shell, sort_domains, load_env_vars_from_file, load_settings
def get_services():
return [
{ "name": "Local DNS (bind9)", "port": 53, "public": False, },
#{ "name": "NSD Control", "port": 8952, "public": False, },
{ "name": "Local DNS Control (bind9/rndc)", "port": 953, "public": False, },
{ "name": "Dovecot LMTP LDA", "port": 10026, "public": False, },
{ "name": "Postgrey", "port": 10023, "public": False, },
{ "name": "Spamassassin", "port": 10025, "public": False, },
{ "name": "OpenDKIM", "port": 8891, "public": False, },
{ "name": "OpenDMARC", "port": 8893, "public": False, },
{ "name": "Memcached", "port": 11211, "public": False, },
{ "name": "Mail-in-a-Box Management Daemon", "port": 10222, "public": False, },
{ "name": "SSH Login (ssh)", "port": get_ssh_port(), "public": True, },
{ "name": "Public DNS (nsd4)", "port": 53, "public": True, },
{ "name": "Incoming Mail (SMTP/postfix)", "port": 25, "public": True, },
{ "name": "Outgoing Mail (SMTP 587/postfix)", "port": 587, "public": True, },
#{ "name": "Postfix/master", "port": 10587, "public": True, },
{ "name": "IMAPS (dovecot)", "port": 993, "public": True, },
{ "name": "Mail Filters (Sieve/dovecot)", "port": 4190, "public": True, },
{ "name": "HTTP Web (nginx)", "port": 80, "public": True, },
{ "name": "HTTPS Web (nginx)", "port": 443, "public": True, },
]
def run_checks(rounded_values, env, output, pool):
# run systems checks
output.add_heading("System")
@ -61,33 +84,9 @@ def get_ssh_port():
def run_services_checks(env, output, pool):
# Check that system services are running.
services = [
{ "name": "Local DNS (bind9)", "port": 53, "public": False, },
#{ "name": "NSD Control", "port": 8952, "public": False, },
{ "name": "Local DNS Control (bind9/rndc)", "port": 953, "public": False, },
{ "name": "Dovecot LMTP LDA", "port": 10026, "public": False, },
{ "name": "Postgrey", "port": 10023, "public": False, },
{ "name": "Spamassassin", "port": 10025, "public": False, },
{ "name": "OpenDKIM", "port": 8891, "public": False, },
{ "name": "OpenDMARC", "port": 8893, "public": False, },
{ "name": "Memcached", "port": 11211, "public": False, },
{ "name": "Mail-in-a-Box Management Daemon", "port": 10222, "public": False, },
{ "name": "SSH Login (ssh)", "port": get_ssh_port(), "public": True, },
{ "name": "Public DNS (nsd4)", "port": 53, "public": True, },
{ "name": "Incoming Mail (SMTP/postfix)", "port": 25, "public": True, },
{ "name": "Outgoing Mail (SMTP 587/postfix)", "port": 587, "public": True, },
#{ "name": "Postfix/master", "port": 10587, "public": True, },
{ "name": "IMAPS (dovecot)", "port": 993, "public": True, },
{ "name": "Mail Filters (Sieve/dovecot)", "port": 4190, "public": True, },
{ "name": "HTTP Web (nginx)", "port": 80, "public": True, },
{ "name": "HTTPS Web (nginx)", "port": 443, "public": True, },
]
all_running = True
fatal = False
ret = pool.starmap(check_service, ((i, service, env) for i, service in enumerate(services)), chunksize=1)
ret = pool.starmap(check_service, ((i, service, env) for i, service in enumerate(get_services())), chunksize=1)
for i, running, fatal2, output2 in sorted(ret):
if output2 is None: continue # skip check (e.g. no port was set, e.g. no sshd)
all_running = all_running and running
@ -174,25 +173,21 @@ def check_ufw(env, output):
ufw = shell('check_output', ['ufw', 'status']).splitlines()
if ufw[0] == "Status: active":
ports_that_should_be_allowed = ["22", "53", "25", "587", "993", "995", "4190", "80", "443"]
not_allowed_ports = []
not_allowed_ports = 0
for service in get_services():
if service["public"] and not is_port_allowed(ufw, service["port"]):
not_allowed_ports += 1
output.print_error("Port %s (%s) should be allowed in the firewall, please re-run the setup." % (service["port"], service["name"]))
for port in ports_that_should_be_allowed:
if not is_port_allowed(ufw, port):
not_allowed_ports.append(port)
if len(not_allowed_ports) == 1:
output.print_error("Port %s should be allowed in the firewall, please rerun the setup." % (not_allowed_ports[0]))
elif len(not_allowed_ports) > 1:
output.print_error("Ports %s should be allowed in the firewall, please rerun the setup." % (", ".join(not_allowed_ports)))
else:
if not_allowed_ports == 0:
output.print_ok("Firewall is active")
else:
output.print_warning("""The firewall is disabled on this machine, this might be because the system
is protected by an external firewall. We can't protect against bruteforce attacks using fail2ban
without the local firewall active. Via ssh please try to run: ufw enable""")
output.print_warning("""The firewall is disabled on this machine. This might be because the system
is protected by an external firewall. We can't protect the system against bruteforce attacks
without the local firewall active. Connect to the system via ssh and try to run: ufw enable.""")
def is_port_allowed(ufw, port):
return any(item.startswith(port) for item in ufw)
return any(re.match(str(port) +"[/ \t].*", item) for item in ufw)
def check_ssh_password(env, output):
# Check that SSH login with password is disabled. The openssh-server