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34 KiB
34 KiB
banIP - ban incoming and/or outgoing ip adresses via ipsets
Description
IP address blocking is commonly used to protect against brute force attacks, prevent disruptive or unauthorized address(es) from access or it can be used to restrict access to or from a particular geographic area — for example.
Main Features
- Support of the following fully pre-configured domain blocklist sources (free for private usage, for commercial use please check their individual licenses)
| Source | Focus | Information |
|---|---|---|
| asn | ASN block | Link |
| bogon | Bogon prefixes | Link |
| country | Country blocks | Link |
| darklist | blocks suspicious attacker IPs | Link |
| debl | Fail2ban IP blacklist | Link |
| doh | Public DoH-Provider | Link |
| drop | Spamhaus drop compilation | Link |
| dshield | Dshield IP blocklist | Link |
| edrop | Spamhaus edrop compilation | Link |
| feodo | Feodo Tracker | Link |
| firehol1 | Firehol Level 1 compilation | Link |
| firehol2 | Firehol Level 2 compilation | Link |
| firehol3 | Firehol Level 3 compilation | Link |
| firehol4 | Firehol Level 4 compilation | Link |
| greensnow | blocks suspicious server IPs | Link |
| iblockads | Advertising blocklist | Link |
| iblockspy | Malicious spyware blocklist | Link |
| myip | Myip Live IP blacklist | Link |
| nixspam | iX spam protection | Link |
| proxy | Firehol list of open proxies | Link |
| ssbl | SSL botnet IP blacklist | Link |
| talos | Cisco Talos IP Blacklist | Link |
| threat | Emerging Threats | Link |
| tor | Tor exit nodes | Link |
| uceprotect1 | Spam protection level 1 | Link |
| uceprotect2 | Spam protection level 2 | Link |
| voip | VoIP fraud blocklist | Link |
| yoyo | Ad protection blacklist | Link |
- zero-conf like automatic installation & setup, usually no manual changes needed
- automatically selects one of the following supported download utilities: aria2c, curl, uclient-fetch, wget
- fast downloads & list processing as they are handled in parallel as background jobs in a configurable 'Download Queue'
- full IPv4 and IPv6 support
- ipsets (one per source) are used to ban a large number of IP addresses
- supports blocking by ASN numbers
- supports blocking by iso country codes
- supports local black- & whitelist (IPv4, IPv6, CIDR notation or domain names)
- auto-add unsuccessful LuCI, nginx or ssh login attempts via 'dropbear'/'sshd' to local blacklist
- auto-add the uplink subnet to local whitelist
- black- and whitelist also accept domain names as input to allow IP filtering based on these names
- supports a 'whitelist only' mode, this option allows to restrict Internet access from/to a small number of secure websites/IPs
- provides a small background log monitor to ban unsuccessful login attempts in real-time
- per source configuration of SRC (incoming) and DST (outgoing)
- integrated IPSet-Lookup
- integrated bgpview-Lookup
- blocklist source parsing by fast & flexible regex rulesets
- minimal status & error logging to syslog, enable debug logging to receive more output
- procd based init system support (start/stop/restart/reload/refresh/status)
- procd network interface trigger support
- automatic blocklist backup & restore, they will be used in case of download errors or during startup
- provides comprehensive runtime information
- provides a detailed IPSet Report
- provides a powerful query function to quickly find blocked IPs/CIDR in banIP related IPSets
- provides an easily configurable blocklist update scheduler called 'Refresh Timer'
- strong LuCI support
- optional: add new banIP sources on your own
Prerequisites
- OpenWrt, tested with the stable release series (21.02.x) and with the latest rolling snapshot releases. On turris devices it has been successfully tested with TurrisOS 5.2.x
Please note: Ancient OpenWrt releases like 18.06.x or 17.01.x are not supported!
Please note: Devices with less than 128 MByte RAM are not supported!
Please note: If you're updating from former banIP 0.3x please manually remove your config (/etc/config/banip) before you start! - A download utility with SSL support: 'wget', 'uclient-fetch' with one of the 'libustream-*' ssl libraries, 'aria2c' or 'curl' is required
- A certificate store like 'ca-bundle', as banIP checks the validity of the SSL certificates of all download sites by default
- Optional E-Mail notification support: for E-Mail notifications you need to install and setup the additional 'msmtp' package
Installation & Usage
- Update your local opkg repository (opkg update)
- Install 'banip' (opkg install banip). The banIP service is disabled by default
- Install the LuCI companion package 'luci-app-banip' (opkg install luci-app-banip)
- It's strongly recommended to use the LuCI frontend to easily configure all aspects of banIP, the application is located in LuCI under the 'Services' menu
banIP CLI
- All important banIP functions are accessible via CLI as well.
~# /etc/init.d/banip
Syntax: /etc/init.d/banip [command]
Available commands:
start Start the service
stop Stop the service
restart Restart the service
reload Reload configuration files (or restart if service does not implement reload)
enable Enable service autostart
disable Disable service autostart
enabled Check if service is started on boot
refresh Refresh ipsets without new list downloads
suspend Suspend banIP processing
resume Resume banIP processing
query <IP> Query active banIP IPSets for a specific IP address
report [<cli>|<mail>|<gen>|<json>] Print banIP related IPset statistics
list [<add>|<add_asn>|<add_country>|<remove>|<remove_asn>|<remove_country>] <source(s)> List/Edit available sources
timer [<add> <tasks> <hour> [<minute>] [<weekday>]]|[<remove> <line no.>] List/Edit cron update intervals
version Print version information
running Check if service is running
status Service status
trace Start with syscall trace
banIP config options
- Usually the auto pre-configured banIP setup works quite well and no manual overrides are needed
| Option | Type | Default | Description |
|---|---|---|---|
| ban_enabled | option | 0 | enable the banIP service |
| ban_autodetect | option | 1 | auto-detect wan interfaces, devices and subnets |
| ban_debug | option | 0 | enable banIP related debug logging |
| ban_mail_enabled | option | 0 | enable the mail service |
| ban_monitor_enabled | option | 0 | enable the log monitor, e.g. to catch failed ssh/luci logins |
| ban_logsrc_enabled | option | 0 | enable the src-related logchain |
| ban_logdst_enabled | option | 0 | enable the dst-related logchain |
| ban_autoblacklist | option | 1 | add suspicious IPs automatically to the local blacklist |
| ban_autowhitelist | option | 1 | add wan IPs/subnets automatically to the local whitelist |
| ban_whitelistonly | option | 0 | allow to restrict Internet access from/to a small number of secure websites/IPs |
| ban_maxqueue | option | 4 | size of the download queue to handle downloads and processing in parallel |
| ban_reportdir | option | /tmp/banIP-Report | directory where banIP stores the report files |
| ban_backupdir | option | /tmp/banIP-Backup | directory where banIP stores the compressed backup files |
| ban_ifaces | list | - | list option to add logical wan interfaces manually |
| ban_sources | list | - | list option to add banIP sources |
| ban_countries | list | - | list option to add certain countries as an alpha-2 ISO code, e.g. 'de' for germany |
| ban_asns | list | - | list option to add certain ASNs (autonomous system number), e.g. '32934' for facebook |
| ban_chain | option | banIP | name of the root chain used by banIP |
| ban_global_settype | option | src+dst | global settype as default for all sources |
| ban_settype_src | list | - | special SRC settype for a certain sources |
| ban_settype_dst | list | - | special DST settype for a certain sources |
| ban_settype_all | list | - | special SRC+DST settype for a certain sources |
| ban_target_src | option | DROP | default src action (used by log chains as well) |
| ban_target_dst | option | REJECT | default dst action (used by log chains as well) |
| ban_lan_inputchains_4 | list | input_lan_rule | list option to add IPv4 lan input chains |
| ban_lan_inputchains_6 | list | input_lan_rule | list option to add IPv6 lan input chains |
| ban_lan_forwardchains_4 | list | forwarding_lan_rule | list option to add IPv4 lan forward chains |
| ban_lan_forwardchains_6 | list | forwarding_lan_rule | list option to add IPv6 lan forward chains |
| ban_wan_inputchains_4 | list | input_wan_rule | list option to add IPv4 wan input chains |
| ban_wan_inputchains_6 | list | input_wan_rule | list option to add IPv6 wan input chains |
| ban_wan_forwardchains_4 | list | forwarding_wan_rule | list option to add IPv4 wan forward chains |
| ban_wan_forwardchains_6 | list | forwarding_wan_rule | list option to add IPv6 wan forward chains |
| ban_mailreceiver | option | - | receiver address for banIP related notification E-Mails |
| ban_mailsender | option | no-reply@banIP | sender address for banIP related notification E-Mails |
| ban_mailtopic | option | banIP notification | topic for banIP related notification E-Mails |
| ban_mailprofile | option | ban_notify | mail profile used in 'msmtp' for banIP related notification E-Mails |
| ban_srcarc | option | /etc/banip/banip.sources.gz | full path to the compressed source archive file used by banIP |
| ban_localsources | list | maclist, whitelist, blacklist | limit the selection to certain local sources |
| ban_extrasources | list | - | add additional, non-banIP related IPSets e.g. for reporting or queries |
| ban_maclist_timeout | option | - | individual maclist IPSet timeout |
| ban_whitelist_timeout | option | - | individual whitelist IPSet timeout |
| ban_blacklist_timeout | option | - | individual blacklist IPSet timeout |
| ban_logterms | list | dropbear, sshd, luci, nginx | limit the log monitor to certain log terms |
| ban_loglimit | option | 100 | parse only the last stated number of log entries for suspicious events |
| ban_ssh_logcount | option | 3 | number of the failed ssh login repetitions of the same ip in the log before banning |
| ban_luci_logcount | option | 3 | number of the failed luci login repetitions of the same ip in the log before banning |
| ban_nginx_logcount | option | 5 | number of the failed nginx requests of the same ip in the log before banning |
Examples
list/edit banIP sources:
~# /etc/init.d/banip list
::: Available banIP sources
:::
Name Enabled Focus Info URL
---------------------------------------------------------------------------
+ asn ASN blocks https://asn.ipinfo.app
+ bogon Bogon prefixes https://team-cymru.com
+ country x Country blocks https://www.ipdeny.com/ipblocks
+ darklist x Blocks suspicious attacker IPs https://darklist.de
+ debl x Fail2ban IP blacklist https://www.blocklist.de
+ doh x Public DoH-Provider https://github.com/dibdot/DoH-IP-blocklists
+ drop x Spamhaus drop compilation https://www.spamhaus.org
+ dshield x Dshield IP blocklist https://www.dshield.org
+ edrop Spamhaus edrop compilation https://www.spamhaus.org
+ feodo x Feodo Tracker https://feodotracker.abuse.ch
+ firehol1 x Firehol Level 1 compilation https://iplists.firehol.org/?ipset=firehol_level1
+ firehol2 Firehol Level 2 compilation https://iplists.firehol.org/?ipset=firehol_level2
+ firehol3 Firehol Level 3 compilation https://iplists.firehol.org/?ipset=firehol_level3
+ firehol4 Firehol Level 4 compilation https://iplists.firehol.org/?ipset=firehol_level4
+ greensnow x Blocks suspicious server IPs https://greensnow.co
+ iblockads Advertising blocklist https://www.iblocklist.com
+ iblockspy x Malicious spyware blocklist https://www.iblocklist.com
+ myip Myip Live IP blacklist https://myip.ms
+ nixspam x iX spam protection http://www.nixspam.org
+ proxy Firehol list of open proxies https://iplists.firehol.org/?ipset=proxylists
+ sslbl x SSL botnet IP blacklist https://sslbl.abuse.ch
+ talos x Cisco Talos IP Blacklist https://talosintelligence.com/reputation_center
+ threat x Emerging Threats https://rules.emergingthreats.net
+ tor x Tor exit nodes https://fissionrelays.net/lists
+ uceprotect1 x Spam protection level 1 http://www.uceprotect.net/en/index.php
+ uceprotect2 Spam protection level 2 http://www.uceprotect.net/en/index.php
+ voip x VoIP fraud blocklist http://www.voipbl.org
+ yoyo x Ad protection blacklist https://pgl.yoyo.org/adservers/
---------------------------------------------------------------------------
* Configured ASNs: -
* Configured Countries: af, bd, br, cn, hk, hu, id, il, in, iq, ir, kp, kr, no, pk, pl, ro, ru, sa, th, tr, ua, gb
receive banIP runtime information:
~# /etc/init.d/banip status
::: banIP runtime information
+ status : enabled
+ version : 0.7.7
+ ipset_info : 2 IPSets with 30 IPs/Prefixes
+ active_sources : whitelist
+ active_devs : wlan0
+ active_ifaces : trm_wwan, trm_wwan6
+ active_logterms : dropbear, sshd, luci, nginx
+ active_subnets : xxx.xxx.xxx.xxx/24, xxxx:xxxx:xxxx:xx::xxx/128
+ run_infos : settype: src+dst, backup_dir: /tmp/banIP-Backup, report_dir: /tmp/banIP-Report
+ run_flags : protocols (4/6): ✔/✔, log (src/dst): ✔/✘, monitor: ✔, mail: ✘, whitelist only: ✔
+ last_run : restart, 0m 3s, 122/30/14, 21.04.2021 20:14:36
+ system : TP-Link RE650 v1, OpenWrt SNAPSHOT r16574-f7e00d81bc
black-/whitelist handling:
banIP supports a local black & whitelist (IPv4, IPv6, CIDR notation or domain names), located by default in /etc/banip/banip.whitelist and /etc/banip/banip.blacklist.
Unsuccessful LuCI logins, suspicious nginx request or ssh login attempts via 'dropbear'/'sshd' could be tracked and automatically added to the local blacklist (see the 'ban_autoblacklist' option). Furthermore the uplink subnet could be automatically added to local whitelist (see 'ban_autowhitelist' option). The list behaviour could be further tweaked with different timeout and counter options (see the config options section above).
Last but not least, both lists also accept domain names as input to allow IP filtering based on these names. The corresponding IPs (IPv4 & IPv6) will be resolved in a detached background process and added to the IPsets. The detached name lookup takes place only during 'restart' or 'reload' action, 'start' and 'refresh' actions are using an auto-generated backup instead.
whitelist-only mode:
banIP supports a "whitelist only" mode. This option allows to restrict the internet access from/to a small number of secure websites/IPs, and block access from/to the rest of the internet. All IPs and Domains which are not listed in the whitelist are blocked. Please note: suspend/resume does not work in this mode.
generate an IPSet report:
~# /etc/init.d/banip report
:::
::: report on all banIP related IPSets
:::
+ Report timestamp ::: 04.02.2021 06:24:41
+ Number of all IPSets ::: 24
+ Number of all entries ::: 302448
+ Number of IP entries ::: 224748
+ Number of CIDR entries ::: 77700
+ Number of MAC entries ::: 0
+ Number of accessed entries ::: 36
:::
::: IPSet details
:::
Name Type Count Cnt_IP Cnt_CIDR Cnt_MAC Cnt_ACC Entry details (Entry/Count)
--------------------------------------------------------------------------------------------------------------------
whitelist_4 src+dst 1 0 1 0 1
xxx.xxxx.xxx.xxxx/24 85
--------------------------------------------------------------------------------------------------------------------
whitelist_6 src+dst 2 0 2 0 1
xxxx:xxxx:xxxx::/64 29
--------------------------------------------------------------------------------------------------------------------
blacklist_4 src+dst 513 513 0 0 2
192.35.168.16 3
80.82.65.74 1
--------------------------------------------------------------------------------------------------------------------
blacklist_6 src+dst 1 1 0 0 0
--------------------------------------------------------------------------------------------------------------------
country_4 src 52150 0 52150 0 23
124.5.0.0/16 1
95.188.0.0/14 1
121.16.0.0/12 1
46.161.0.0/18 1
42.56.0.0/14 1
113.64.0.0/10 1
113.252.0.0/14 1
5.201.128.0/17 1
125.64.0.0/11 1
90.188.0.0/15 1
60.0.0.0/11 1
78.160.0.0/11 1
1.80.0.0/12 1
183.184.0.0/13 1
175.24.0.0/14 1
119.176.0.0/12 1
59.88.0.0/13 1
103.78.12.0/22 1
123.128.0.0/13 1
116.224.0.0/12 1
42.224.0.0/12 1
82.80.0.0/15 1
14.32.0.0/11 1
--------------------------------------------------------------------------------------------------------------------
country_6 src 20099 0 20099 0 0
--------------------------------------------------------------------------------------------------------------------
debl_4 src+dst 29389 29389 0 0 1
5.182.210.16 4
--------------------------------------------------------------------------------------------------------------------
debl_6 src+dst 64 64 0 0 0
--------------------------------------------------------------------------------------------------------------------
doh_4 src+dst 168 168 0 0 0
--------------------------------------------------------------------------------------------------------------------
doh_6 src+dst 122 122 0 0 0
--------------------------------------------------------------------------------------------------------------------
drop_4 src+dst 965 0 965 0 0
--------------------------------------------------------------------------------------------------------------------
drop_6 src+dst 36 0 36 0 0
--------------------------------------------------------------------------------------------------------------------
dshield_4 src+dst 20 0 20 0 1
89.248.165.0/24 1
--------------------------------------------------------------------------------------------------------------------
feodo_4 src+dst 325 325 0 0 0
--------------------------------------------------------------------------------------------------------------------
firehol1_4 src+dst 2763 403 2360 0 0
--------------------------------------------------------------------------------------------------------------------
iblockspy_4 src+dst 3650 2832 818 0 0
--------------------------------------------------------------------------------------------------------------------
nixspam_4 src+dst 9577 9577 0 0 0
--------------------------------------------------------------------------------------------------------------------
sslbl_4 src+dst 104 104 0 0 0
--------------------------------------------------------------------------------------------------------------------
threat_4 src+dst 1300 315 985 0 0
--------------------------------------------------------------------------------------------------------------------
tor_4 src+dst 1437 1437 0 0 0
--------------------------------------------------------------------------------------------------------------------
tor_6 src+dst 478 478 0 0 0
--------------------------------------------------------------------------------------------------------------------
uceprotect1_4 src+dst 156249 156249 0 0 6
192.241.220.137 1
128.14.137.178 1
61.219.11.153 1
138.34.32.33 1
107.174.133.130 2
180.232.99.46 1
--------------------------------------------------------------------------------------------------------------------
voip_4 src+dst 12563 12299 264 0 0
--------------------------------------------------------------------------------------------------------------------
yoyo_4 src+dst 10472 10472 0 0 1
204.79.197.200 2
--------------------------------------------------------------------------------------------------------------------
Enable E-Mail notification via 'msmtp':
To use the email notification you have to install & configure the package 'msmtp'.
Modify the file '/etc/msmtprc', e.g.:
[...]
defaults
auth on
tls on
tls_certcheck off
timeout 5
syslog LOG_MAIL
[...]
account ban_notify
host smtp.gmail.com
port 587
from <address>@gmail.com
user <gmail-user>
password <password>
Finally enable E-Mail support and add a valid E-Mail receiver address in LuCI.
Edit, add new banIP sources:
The banIP blocklist sources are stored in an external, compressed JSON file '/etc/banip/banip.sources.gz'.
This file is directly parsed in LuCI and accessible via CLI, just call /etc/init.d/banip list.
To add new or edit existing sources extract the compressed JSON file gunzip /etc/banip/banip.sources.gz.
A valid JSON source object contains the following required information, e.g.:
[...]
"tor": {
"url_4": "https://lists.fissionrelays.net/tor/exits-ipv4.txt",
"url_6": "https://lists.fissionrelays.net/tor/exits-ipv6.txt",
"rule_4": "/^(([0-9]{1,3}\\.){3}(1?[0-9][0-9]?|2[0-4][0-9]|25[0-5])(\\/(1?[0-9]|2?[0-9]|3?[0-2]))?)([[:space:]]|$)/{print \"add tor_4 \"$1}",
"rule_6": "/^(([0-9A-f]{0,4}:){1,7}[0-9A-f]{0,4}:?(\\/(1?[0-2][0-8]|[0-9][0-9]))?)([[:space:]]|$)/{print \"add tor_6 \"$1}",
"focus": "Tor exit nodes",
"descurl": "https://fissionrelays.net/lists"
},
[...]
Add an unique object name, make the required changes to 'url_4', 'rule_4' (and/or 'url_6', 'rule_6'), 'focus' and 'descurl' and finally compress the changed JSON file gzip /etc/banip/banip.sources.gz to use the new source object in banIP.
Please note: if you're going to add new sources on your own, please make a copy of the default file and work with that copy further on, cause the default will be overwritten with every banIP update. To reference your copy set the option 'ban_srcarc' which points by default to '/etc/banip/banip.sources.gz'
Support
Please join the banIP discussion in this forum thread or contact me by mail dev@brenken.org
Removal
- stop all banIP related services with /etc/init.d/banip stop
- optional: remove the banip package (opkg remove banip)
Have fun!
Dirk