Add support for postfix/submission/smtpd matching. #804
Conversation
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
|
seems sane ref: http://anonscm.debian.org/cgit/users/lamont/postfix.git/tree/conf/master.cf |
|
done |
|
Please let me know if this is what you want, or if there is an issue. I also added a match line for concurrency limit exceeded, as I was smtp connection bombed a few times recently. |
|
|
||
| failregex = ^%(__prefix_line)sNOQUEUE: reject: RCPT from \S+\[<HOST>\]: 554 5\.7\.1 .*$ | ||
| ^%(__prefix_line)sNOQUEUE: reject: RCPT from \S+\[<HOST>\]: 450 4\.7\.1 : Helo command rejected: Host not found; from=<> to=<> proto=ESMTP helo= *$ | ||
| ^%(__prefix_line)sNOQUEUE: reject: VRFY from \S+\[<HOST>\]: 550 5\.1\.1 .*$ | ||
| ^%(__prefix_line)swarning: Connection concurrency limit exceeded: \d+ from \S+\[<HOST>\] for service.*$ |
There was a problem hiding this comment.
it indeed does look like a possible attack vector but per se might also happen in non-malicious cases. So is not a clear indicator... may be worth for smth like postfix-dos filter but IMHO not for this one.
similar argumentation for the one below -- couldn't it happen simply on unstable connection without any malicious attempt?
so let's keep this PR solely for the original purpose.
|
to proceed forward I will merge it, and then remove those additional two regexes and their sample logs... please initiate new PR to discuss more etc |
yarikoptic
added a commit
that referenced
this pull request
Sep 13, 2014
Add support for postfix/submission/smtpd matching.
yarikoptic
referenced
this pull request
Sep 13, 2014
yarikoptic
added a commit
to yarikoptic/fail2ban
that referenced
this pull request
Oct 28, 2014
What aught to be a bugfix release delayed into a featured release 0.9.1
ver. 0.9.1 (2014/10/29) - better, faster, stronger
----------
- Refactoring (IMPORTANT -- Please review your setup and configuration):
* iptables-common.conf replaced iptables-blocktype.conf
(iptables-blocktype.local should still be read) and now also
provides defaults for the chain, port, protocol and name tags
- Fixes:
* start of file2ban aborted (on slow hosts, systemd considers the server has
been timed out and kills him), see fail2bangh-824
* UTF-8 fixes in pure-ftp thanks to Johannes Weberhofer. Closes fail2bangh-806.
* systemd backend error on bad utf-8 in python3
* badips.py action error when logging HTTP error raised with badips request
* fail2ban-regex failed to work in python3 due to space/tab mix
* recidive regex samples incorrect log level
* journalmatch for recidive incorrect PRIORITY
* loglevel couldn't be changed in fail2ban.conf
* Handle case when no sqlite library is available for persistent database
* Only reban once per IP from database on fail2ban restart
* Nginx filter to support missing server_name. Closes fail2bangh-676
* fail2ban-regex assertion error caused by miscount missed lines with
multiline regex
* Fix actions failing to execute for Python 3.4.0. Workaround for
http://bugs.python.org/issue21207
* Database now returns persistent bans on restart (bantime < 0)
* Recursive action tags now fully processed. Fixes issue with bsd-ipfw
action
* Fixed TypeError with "ipfailures" and "ipjailfailures" action tags.
Thanks Serg G. Brester
* Correct times for non-timezone date times formats during DST
* Pass a copy of, not original, aInfo into actions to avoid side-effects
* Per-distribution paths to the exim's main log
* Ignored IPs are no longer banned when being restored from persistent
database
* Manually unbanned IPs are now removed from persistent database, such they
wont be banned again when Fail2Ban is restarted
* Pass "bantime" parameter to the actions in default jail's action
definition(s)
* filters.d/sieve.conf - fixed typo in _daemon. Thanks Jisoo Park
* cyrus-imap -- also catch also failed logins via secured (imaps/pop3s).
Regression was introduced while strengthening failregex in 0.8.11 (bd175f)
Debian bug #755173
* postfix-sasl - added journalmatch. Thanks Luc Maisonobe
* postfix* - match with a new daemon string (postfix/submission/smtpd).
Closes fail2bangh-804 . Thanks Paul Traina
* apache - added filter for AH01630 client denied by server configuration.
- New features:
- New filters:
- monit Thanks Jason H Martin
- directadmin Thanks niorg
- apache-shellshock Thanks Eugene Hopkinson (SlowRiot)
- New actions:
- symbiosis-blacklist-allports for Bytemark symbiosis firewall
- fail2ban-client can fetch the running server version
- Added Cloudflare API action
- Enhancements
* Start performance of fail2ban-client (and tests) increased, start time
and cpu usage rapidly reduced. Introduced a shared storage logic, to
bypass reading lots of config files (see fail2bangh-824).
Thanks to Joost Molenaar for good catch (reported fail2bangh-820).
* Fail2ban-regex - add print-all-matched option. Closes fail2bangh-652
* Suppress fail2ban-client warnings for non-critical config options
* Match non "Bye Bye" disconnect messages for sshd locked account regex
* courier-smtp filter:
- match lines with user names
- match lines containing "535 Authentication failed" attempts
* Add <chain> tag to iptables-ipsets
* Realign fail2ban log output with white space to improve readability. Does
not affect SYSLOG output
* Log unhandled exceptions
* cyrus-imap: catch "user not found" attempts
* Add support for Portsentry
* tag '0.9.1': (36 commits)
ENH: additional versioning changes
Refreshed manpages
ENH: fail early in generate-man + provide PYTHONPATH upstairs
Changes for the 0.9.1 release versioning
Populated MANIFEST with more entries which were preiously missed or duplicated. Sorted within each "section"
Add portsentry to changelog
ConfigReader.touch renamed into protected _create_unshared
DOC: documentation about available vagrantfile setup
Added myself into THANKS
DOC: adjust docs in mytime to place docs into docstrings
ENH: do use @staticmethod (we are well beyond support of 2.4 now)
testExecuteTimeout fixed: give a test still 1 second, because system could be too busy
coverage: no cover (for failed except)
fix: fail2ban-regex with filter file failed (after merging fail2ban#824, because test case missing); test case for 'readexplicit' added;
ENH: remove obsolete code for python < 2.6 (we support >= 2.6)
DOC: very minor (tabs/spaces)
We better check that installation doesn't cause any errors as well
code review, change log entries added;
reset share/cache storage (if we use 'reload' in client with interactive mode)
normalize tabs/spaces in docstrings;
...
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
By default, on debian, and perhaps globally, the postfix smtpd daemon running on port 587 logs with the daemon name
postfix/submission/smtpd
instead of
postfix/smtpd
This covers both cases (old, new, port 25, port 587).
Close #803