81 lines
3.1 KiB
Markdown
81 lines
3.1 KiB
Markdown
[](https://gitlab.niet.verweg.com/ruben/jail2ban-pf/-/commits/main)
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[](https://gitlab.niet.verweg.com/ruben/jail2ban-pf/-/commits/main)
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## Installation
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* Install uwsgi
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sudo pkg install www/uwsgi
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* Use the following for configuring uwsgi in rc.conf
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sudo sysrc uwsgi\_enable="YES"
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sudo sysrc uwsgi\_profiles="jail2ban\_pf"
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sudo sysrc uwsgi\_jail2ban\_pf\_flags="-L -M --uid \_jail2ban --python-path /opt/jail2ban-pf --wsgi-file /opt/jail2ban-pf/wsgi.py --stats 127.0.0.1:9191 --socket 127.0.0.1:3031 --chdir /var/empty --callable app --manage-script-name"
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* Configure <installation root>/instance/config.py
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SECRET\_KEY = os.urandom(32).hex()
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AUTHFILE = '/usr/local/etc/jail2ban-pf-users.txt'
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* Configure a nginx upstream and vhost
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_Of course you can listen on ipv4/ipv6 but you want to protect these addresses from inadvertent or malicious probes_
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upstream uwsgi_pf_jail2ban {
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server 127.0.0.1:3031;
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}
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server {
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listen unix:/path/to/jail_1/var/run/pf2ban/pf_jail2ban.sock;
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listen unix:/path/to/jail_2/var/run/pf2ban/pf_jail2ban.sock;
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listen unix:/path/to/jail_3/var/run/pf2ban/pf_jail2ban.sock;
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server_name _;
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location / {
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index index.html index.htm index.php;
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allow all;
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include /usr/local/etc/nginx/uwsgi_params-dist;
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uwsgi_pass uwsgi_pf_jail2ban;
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}
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}
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* Place anchors in pf for jail2ban to use
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anchor "f2b/*"
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anchor f2b-jail {
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anchor "jail1_fqdn" to { <addr_jail1>, <addr_extra_jail1>, <addr_extra6_jail1> }
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anchor "jail2_fqdn" to { <addr_jail2>, <addr_extra_jail2>, <addr_extra6_jail2> }
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anchor "jail3_fqdn" to { <addr_jail3>, <addr_extra_jail3>, <addr_extra6_jail3> }
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}
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Having seperate anchors per jail makes it possible to have fine grained
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blocking: Something that is harmful to jail2 might be perfectly legit for jail2.
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Fail2ban will (re)create the per anchor rules on startup, and populate the designated address tables with offenders, e.g.:
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sudo pfctl -a f2b-jail/jail1\_fqdn -T show -t f2b-recidive
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192.0.2.66
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2001:db8:abad:cafe:0bad:f00d
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And the rules referencing these tables
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sudo pfctl -a 'f2b-jail/jail1\_fqdn' -s rules
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block drop quick proto tcp from <f2b-dovecot> to any port = pop3
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block drop quick proto tcp from <f2b-dovecot> to any port = pop3s
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block drop quick proto tcp from <f2b-dovecot> to any port = imap
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block drop quick proto tcp from <f2b-dovecot> to any port = imaps
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block drop quick proto tcp from <f2b-dovecot> to any port = submission
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block drop quick proto tcp from <f2b-dovecot> to any port = smtps
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block drop quick proto tcp from <f2b-dovecot> to any port = sieve
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block drop quick proto tcp from <f2b-sendmail-auth> to any port = submission
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block drop quick proto tcp from <f2b-sendmail-auth> to any port = smtps
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block drop quick proto tcp from <f2b-sendmail-auth> to any port = smtp
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block drop quick proto tcp from <f2b-sshd> to any port = ssh
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block drop quick proto tcp from <f2b-recidive> to any
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