jschoubben
278610c0c3
The jail.local [DEFAULT] gains ignoreip = 127.0.0.1/8 ::1 ${machine:mesh-range}
— localhost plus the mesh's own private range, named through the placeholder
rather than hardcoded (data is the mesh's, ADR 0112). Without it fail2ban could
ban the mesh's own nodes on 10.10.0.0/24; on novox that rule survived only in
memory from a now-deleted HAL file and would be lost on the next restart.
81 lines
3.9 KiB
JSON
81 lines
3.9 KiB
JSON
{
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"module": "fail2ban",
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"version": "1",
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"capabilities": [
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"firewall"
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],
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"claims": [
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{
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"name": "node-intrusion-prevention",
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"scope": "node"
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}
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],
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"resources": [
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{
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"id": "package",
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"type": "package",
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"package": "fail2ban"
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},
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{
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"id": "jail-d",
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"type": "directory",
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"path": "/etc/fail2ban/jail.d",
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"mode": "0755"
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},
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{
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"id": "action-d",
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"type": "directory",
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"path": "/etc/fail2ban/action.d",
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"mode": "0755"
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},
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{
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"id": "jail-local",
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"type": "file",
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"path": "/etc/fail2ban/jail.local",
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"mode": "0644",
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"content": "[INCLUDES]\n\nbefore = paths-arch.conf\n\n[DEFAULT]\n\n# Never act on the machine itself or on a tunnel peer: the mesh's private range is\n# ${machine:mesh-range}, named here rather than written as a value the module cannot\n# know (novox/hq ADR 0112). Without this, fail2ban could ban the mesh's own nodes.\nignoreip = 127.0.0.1/8 ::1 ${machine:mesh-range}\n\nbantime = 10m\nfindtime = 10m\nmaxretry = 5\n\nbanaction = ufw\nbanaction_allports = iptables-allports\n\n[sshd]\nenabled = true\nport = ssh\nlogpath = %(sshd_log)s\nbackend = %(sshd_backend)s\n"
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},
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{
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"id": "jail-sshd",
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"type": "file",
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"path": "/etc/fail2ban/jail.d/sshd.conf",
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"mode": "0644",
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"content": "[sshd]\nenabled = true\nport = ssh\nlogpath = %(sshd_log)s\nbackend = %(sshd_backend)s\nmaxretry = 5\n"
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},
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{
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"id": "jail-recidive",
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"type": "file",
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"path": "/etc/fail2ban/jail.d/recidive.conf",
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"mode": "0644",
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"content": "[recidive]\nenabled = true\nlogpath = /var/log/fail2ban.log\n# Ban in both INPUT (host services like SSH) and DOCKER-USER (container services)\nbanaction = iptables-allports-dualchain\nbantime = 1w\nfindtime = 1d\n"
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},
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{
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"id": "action-dualchain",
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"type": "file",
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"path": "/etc/fail2ban/action.d/iptables-allports-dualchain.conf",
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"mode": "0644",
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"content": "# Fail2Ban action: ban in both INPUT and DOCKER-USER chains\n# Used by recidive to block repeat offenders from both host and Docker services\n\n[INCLUDES]\n\nbefore = iptables.conf\n\n[Definition]\n\ntype = allports\n\nactionstart = { <iptables> -C f2b-<name> -j <returntype> >/dev/null 2>&1; } || { <iptables> -N f2b-<name> || true; <iptables> -A f2b-<name> -j <returntype>; }\n { <iptables> -C INPUT -p <protocol> -j f2b-<name> >/dev/null 2>&1; } || { <iptables> -I INPUT -p <protocol> -j f2b-<name>; }\n { <iptables> -C DOCKER-USER -p <protocol> -j f2b-<name> >/dev/null 2>&1; } || { <iptables> -I DOCKER-USER -p <protocol> -j f2b-<name>; }\n\nactionstop = <iptables> -D INPUT -p <protocol> -j f2b-<name> 2>/dev/null || true\n <iptables> -D DOCKER-USER -p <protocol> -j f2b-<name> 2>/dev/null || true\n <iptables> -F f2b-<name>\n <iptables> -X f2b-<name>\n\nactioncheck = <iptables> -n -L f2b-<name> >/dev/null\n\nactionban = <iptables> -I f2b-<name> 1 -s <ip> -j <blocktype>\n\nactionunban = <iptables> -D f2b-<name> -s <ip> -j <blocktype>\n\n[Init]\n\nchain = INPUT\nname = default\nprotocol = tcp\nblocktype = REJECT --reject-with icmp-port-unreachable\nreturntype = RETURN\nlockingopt = -w\niptables = iptables <lockingopt>\n\n[Init?family=inet6]\n\nblocktype = REJECT --reject-with icmp6-port-unreachable\niptables = ip6tables <lockingopt>\n"
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},
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{
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"id": "logrotate",
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"type": "file",
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"path": "/etc/logrotate.d/fail2ban",
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"mode": "0644",
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"content": "/var/log/fail2ban.log {\n missingok\n notifempty\n postrotate\n /usr/bin/fail2ban-client flushlogs >/dev/null || true\n endscript\n}\n"
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},
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{
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"id": "run",
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"type": "service",
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"unit": "fail2ban.service",
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"state": "running",
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"boot": "enabled",
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"restart-on": [
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"jail-local",
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"jail-sshd",
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"jail-recidive",
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"action-dualchain"
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]
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}
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]
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}
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