search for: sshguard

...that runs once a minute and creates little spikes in the usage and I/O graphs, and is slower to respond than I'd really prefer. I felt that it'd be much cooler to get something more comprehensive put together. We don't use fail2ban because I don't like having to install python. sshguard is a high-performance compiled C application that can run off a log file or a pipe from syslogd to sshguard, meaning that it can respond a lot more quickly than once a minute, and works with very modest overhead on the host system. It also has features such as touchiness, so that it can get toughe...

Has anyone checked to make sure that this won't upset sshguard? [1] Offhand, it looks like it will [2][3]. [1] https://www.sshguard.net/ [2] https://bitbucket.org/sshguard/sshguard/src/2ed7e0aee18b7271daab92d5335c14e04bb2cc89/src/parser/attacks.txt?at=master&fileviewer=file-view-default#attacks.txt-9 [3] https://bitbucket.org/sshguard/sshguard/src/2ed7e0...

I use SSHGuard on well ssh (doh!), but supposedly you can use it for postfix and dovecot also. I can tell you it is well supported. I am on Centos 7 using firewalld. ? Original Message ? From: adi at ddns.com.au Sent: May 21, 2020 11:01 PM To: voytek at sbt.net.au Cc: dovecot at dovecot.org Subject: Re: fa...

Hi all, I wonder if there is a script to analyze logfiles for llogwatch and sshguard? Anyone knows? Adrian -- Adri P. van Bloois "Elegance is not a dispensable luxury but a factor that decides between success and failure." Edsger W. Dijkstra

...'re discussing the subject, I've got a soft spot for CSF as a replacement for fail2ban, and it has a lot of additional features as well. https://www.configserver.com/cp/csf.html P. On 22/05/2020 18.32, Jerry wrote: > On Thu, 21 May 2020 23:22:04 -0700, lists stated: >> I use SSHGuard on well ssh (doh!), but supposedly you can use it for >> postfix and dovecot also. I can tell you it is well supported. I am >> on Centos 7 using firewalld. > > SSHGuard works fairly well with Postfix; however, it is virtually > useless with Dovecot. It never picks up on &quo...

On Thu, 2019-11-21 at 13:44 +0100, Adrian van Bloois wrote: > I wonder if there is a script to analyze logfiles for llogwatch and > sshguard? > Anyone knows? You can take an existing script, for another piece of software reported by Logwatch, retain the beginning and ending parts, and create your own version. The completed script should be placed in /etc to ensure it is not over-written by software updates. It can be difficult sor...

Good suggestion for sshguard. pjwelsh https://wiki.gentoo.org/wiki/Sshguard http://www.funtoo.org/Package:Sshguard There you go, I give permission to cross license & plagiarize my *ntoo content to centos's wiki. it should be very similar to a cent box except for yum install sshguard && chkconfig sshguard (...

...isco.ca.us> wrote: > On 2016-08-28, TE Dukes <tdukes at palmettoshopper.com> wrote: > >> Right now, I'm just trying to take some load off my >> home server from badbots but I am getting hit on other services as well. > > Another possibility for you to look at is sshguard. It can protect > against brute force ssh attacks (using iptables rules, which is how I > use it) but IIRC it can also protect against http attacks (I've never > used it that way, so I don't know how difficult this is). I use fail2ban, provides similar functionality like sshguard...

...log in, its just that there are so many attempts logged, that it fills up 90% of my logs with noise, and prevents me from seeing the other important events. > Are users able to login without the @domain part? No. All valid mail accounts are in the form user at domain.com > There is also sshguard that will do the same thing. > One of these should probably be running anyway as they help mitigate issues where someone keep hammering on your system, however in the days of DDOS, they are less helpful than they used to be. I'll take a look at sshguard, although it looks like its retroacti...

...have noticed my web server and email box have attempted to ssh'd to using weird names like admin,appuser,nobody,etc.... None of these are valid users. I know that I can block sshd all together with iptables but that will not work for us. I did a little research on google and found programs like sshguard and sshdfilter. Just wanted to know if anyone had any experience with anything like these programs or have any other advice. I really appreciate it. -- Bo Lynch

On Thu, 21 May 2020 23:22:04 -0700, lists stated: >I use SSHGuard on well ssh (doh!), but supposedly you can use it for >postfix and dovecot also. I can tell you it is well supported. I am >on Centos 7 using firewalld. SSHGuard works fairly well with Postfix; however, it is virtually useless with Dovecot. It never picks up on "auth fail" and a f...

Hello, I use hosts that are dual stack configured (IPv4 and IPv6) and it happens that connectivity through one or the other is broken and timeouts. In these case connection to the SSH server can take quite some time as ssh waits for the first address to timeout before trying the next. So I gave a stab at implementing RFC 8305. This patch implements part of it in sshconnect.c. * It does not do

...le is crond; Chkconfig output: crond 0:off 1:off 2:on 3:on 4:on 5:on 6:off permissions in init.d: -rwxr-xr-x 1 root root 2793 Jul 18 2011 crond The processes that aren't loading are; Clamd, directadmin, exim, freshclam, httpd, mysqld, ossec, proftpd, sshguard Any ideas what I need to check/change to resolve this problem? Thanks everyone!

> -----Original Message----- > From: centos-bounces at centos.org [mailto:centos-bounces at centos.org] On > Behalf Of Keith Keller > Sent: Sunday, August 28, 2016 4:23 PM > To: centos at centos.org > Subject: Re: [CentOS] .htaccess file > > On 2016-08-28, TE Dukes <tdukes at palmettoshopper.com> wrote: > > > > I'm just not following or understanding.

This is probably quite an easy question, but I haven't been able to find the answer. I'm running a server where all the email addresses are in the format "user at domain.com". I've noticed that a large number of fake login attempts use the format "user" eg. reception, service, root, admin. Is it possible to prevent any such logins to these email users without an

On Tue, 2015-02-03 at 15:51 -0500, Jonathan Billings wrote: > Also, it isn't up to the *installer* to set up a system that resists > brute-force password attacks. Give us the tools to do the job ! My amalgamated idea is:- (1) When external access gets a password wrong 'n' occasions, as determined by the SysAdmin, the external IP address is automatically permanently blocked

...type filter hook forward priority 0; policy accept; } chain output { type filter hook output priority 0; policy accept; } } real 0m2.837s user 0m0.320s sys 0m1.200s Even for a completely unrelated table: # time nft list table ip sshguard table ip sshguard { set attackers { type ipv4_addr flags interval elements = { 118.25.1.73, 120.92.15.82, 122.2.16.126, 193.112.52.201, 222.186.30.71 } } chain blacklis...

...-docs mailing list > CentOS-docs at centos.org > http://lists.centos.org/mailman/listinfo/centos-docs > > > End of CentOS-docs Digest, Vol 95, Issue 2 > ****************************************** > i think the rate limiting section sucks too... it should instead be suggesting sshguard which can ban multiple failed login attempts for variable amounts of time. i have mine set to ban for a week. fail2ban can do the same for passwords but you can stream keys to it. -666threesixes666 -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists...

Hello! A machine I manage remotely for a friend comes under a distributed ssh break-in attack every once in a while. Annoyed (and alarmed) by the messages like: Aug 12 10:21:17 symbion sshd[4333]: Invalid user mythtv from 85.234.158.180 Aug 12 10:21:18 symbion sshd[4335]: Invalid user mythtv from 85.234.158.180 Aug 12 10:21:20 symbion sshd[4337]: Invalid user mythtv from 85.234.158.180 Aug 12

Hello! A machine I manage remotely for a friend comes under a distributed ssh break-in attack every once in a while. Annoyed (and alarmed) by the messages like: Aug 12 10:21:17 symbion sshd[4333]: Invalid user mythtv from 85.234.158.180 Aug 12 10:21:18 symbion sshd[4335]: Invalid user mythtv from 85.234.158.180 Aug 12 10:21:20 symbion sshd[4337]: Invalid user mythtv from 85.234.158.180 Aug 12