adding ip restrictions to login process #849
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mdipierro
reviewed
Jan 16, 2024
| if blocked_ip['count']< BLCOKED_IP_MAX_COUNT: | ||
| blocked_ip['count']+=1 | ||
| with open(FILE_BLCOKED_IP_COUNT, "w") as fp: | ||
| json.dump(host_ip_blocked, fp) |
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unfortunately this is not thread safe.
| BLCOKED_IP_MAX_COUNT=5 | ||
| # timeout for blocked IP: if BLOCKED_IP_TIMEOUT=0 blocking never expired | ||
| BLOCKED_IP_TIMEOUT=5*60 # reenable blocked ip after this time in seconds | ||
| FILE_BLCOKED_IP_COUNT="host_ip_blocked.txt" |
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Look into core.py for DatabaseErrorLogger. It creates a global database .service/service.storage. Perhaps make auth create a new "web2py_managed_ips" in there with fields "ip, allowed, blocked, counter" and use those.
| try: | ||
| with open(FILE_HOST_IP_ALLOW, "r") as fp: | ||
| host_ip_allow = json.load(fp) | ||
| except: |
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pylint will not like this
| client_ip=request.remote_addr | ||
| is_this_ip_allowd=True | ||
| if host_ip_blocked: | ||
| blocked_ip =host_ip_blocked[client_ip] |
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This is nice. Even if reading from DB make sure all blocked ips are read at statup to minimize disk IO at every request.
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This PR contains the following additions to the login process (all implemented in the py4web/utils/auth.py):
Notes:
In addition to these restrictions, in case of a failed login (because of wrong credential ), the client IP will be registered in a file name: host_ip_blocked.txt.
After a predefined number of failures, the client IP will be blocked for predefined number of seconds. Which means that even a a login with correct credentials will be denied until the timeout period is over.
A successful login after the timeout period will cause a removal of the ip from the host_ip_blocked.txt.
Issues:
The path to the host_ip_allow.txt and the host_ip_deny.txt files are not specified in the PR.
Since the host_ip_blocked.txt file is created by the framework and not by the user, the path happened to be '/' on an ubuntu installation with the machine-setup.sh script from the py4web\deployment_tools\ubuntu