similar to: Auto ban IP addresses

Hi, Got some great news a few days ago from Sandro Gauci (@SandroGauci) and we'll be talking about this with him this Friday at 1PM. SIPVicious, the free security tools for SIP scanning, now include a new tool: svcrash. It is aimed at helping system administrators stop bandwidth consuming scans making use of svwar and svcrack. Here is the announcement on SIPViscious blog:

Hello all. I was recently the victim of a SIP flood attack. I'm wondering what is the best method to prevent such things in the future. Many thanks Greg -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.digium.com/pipermail/asterisk-users/attachments/20101003/2e254523/attachment.htm

I happened to be in the cli tonight as some (208.122.57.58) initiated a simple attack - just trying to make long distance calls from outside context. Although harmless, this went on for several minutes as the idiot just used up my bandwidth with SIP messages. Here's and example: [2011-12-28 22:53:42] NOTICE[9635]: chan_sip.c:14035 handle_request_invite: Call from '' to extension

... using it as a tool and understanding what it does... So one part of it's toolset identifys valid SIP accounts - and I was under the impression that alwaysauthreject=yes was supposed to stop this... However, it sends a request for a highly probably non-existent account, then sends requests for probably existing accounts and I guess compares the results - account not found vs. bad

Is there a way to drop a ip connection to asterisk after a number of register attempts. I have been having issues with hackers doing registration scanning against our server. We block their address at the fire wall but since asterisk does not force a drop of the connect after so many bad reg attempts I can't enforce the block until they drop and try again. This allows them to run the box

Hi, I've recently had a fairly prolonged SIP registration attack, 18 hours in this case and often with 200 attempts per second, and suspect I've had a number of these in the past. The main symptom I noticed previously was, because Asterisk was responding to each registration request it received, it was very quickly using up my 448 kbps upload limit for my home ADSL connection: any

I have fail2ban on my mail server monitoring Dovecot and Exim. I have noticed that it has stopped banning IP's. I have seen in /var/log/fail2ban.log: 2020-04-07 09:42:05,875 fail2ban.filter [16138]: INFO [dovecot] Found 77.40.61.224 - 2020-04-07 09:42:05 2020-04-07 09:42:06,408 fail2ban.actions [16138]: NOTICE [dovecot] Ban 77.40.61.224 2020-04-07 09:42:06,981

On Sat, Aug 03, 2019 at 04:50:05PM +0100, Giles Coochey wrote: > > On 02/08/2019 19:38, Jon LaBadie wrote: > > On Fri, Aug 02, 2019 at 10:19:49AM -0400, mark wrote: > > > Fred Smith wrote: > > > > On Fri, Aug 02, 2019 at 09:28:23AM -0400, mark wrote: > > > <MVNCH> > > I've been using fail2ban for some time, I have a number of ports open

So I have been reading the ssh attack thread and finally want to ask about something. I doubt there is a program like this, but I would love to have a program that listens at common ports that I do not use at all...and only allow that program to listen to it, especially the usual ssh port (using a different one for real ssh)... That program would then, upon receiving a 'sniff' or

I've followed one of the pages on line specifically for installing fail2ban on Centos 7 and all looks fine. I've added a fail regex to /etc/fail2ban/filter.d/exim.conf as suggested on another page: \[<HOST>\]: 535 Incorrect authentication data which appears to be successfully matchnig lines in /var/log/exim/mail.log such as 2019-04-19 13:06:10 dovecot_plain

On 05/08/2019 09:18, Pete Biggs wrote: >> I've found the default 10min bans hardly bother some attackers. >> So I've added the "recidive" feature of fail2ban. After the >> second 10min ban, the attacker is blocked for 1 week. >> > Oh definitely. My systems are set to "3 bans and you're out" - a > recidive ban is permanent after three

Hi, Given the recent increase in SIP brute force attacks, I've had a little idea. The standard scripts that block after X attempts work well to prevent you actually being compromised, but once you've been 'found' then the attempts seem to keep coming for quite some time. Older versions of sipvicious don't appear to stop once you start sending un-reachables (or straight

Is anyone using asterisk with fail2ban? I have it working except it takes way more break-in attempts than what is set in "maxretry" in jail.conf For example, I get an email saying: "The IP 199.204.45.19 has just been banned by Fail2Ban after 181 attempts against ASTERISK." when "maxretry = 5" in jail.conf Perhaps someone else is experiencing this or has resolved it,

On Friday 19 April 2019 15:19:26 Pete Biggs wrote: > > I've added a fail regex to /etc/fail2ban/filter.d/exim.conf as suggested > > on another page: > > The standard exim.conf already has a 535 filter. Was that not working > for you? I was following the instructions as shown on the page. I did find after sending my post that there was already a regex in the standard

> > > > /var/log/fail2ban.log is showing that it's working: > > I have seem similar odd behaviour with f2b with other filters. > Try to uninstall the package > fail2ban-systemd > and stop and start fail2ban again. > This might change its behavior to the better. > The fail2ban-systemd package configures fail2ban to use systemd journal for log input. The OP

On Friday 19 April 2019 16:15:32 Kenneth Porter wrote: > On 4/19/2019 5:30 AM, Gary Stainburn wrote: > > I've followed one of the pages on line specifically for installing fail2ban on > > Centos 7 and all looks fine. > > Which page? It would help to see what they advised. > On Friday 19 April 2019 16:15:32 Kenneth Porter wrote: > On 4/19/2019 5:30 AM, Gary Stainburn

Hello List, with CentOS 7.2 it is not longer possible to run fail2ban on a Server ? I install a new CentOS 7.2 and the EPEL directory yum install fail2ban I don't change anything only I create a jail.local to enable the Filters [sshd] enabled = true .... ..... When I start afterward fail2ban systemctl status fail2ban is clean But systemctl status firewalld is broken ? firewalld.service -

Hi All, I see this kind of attack on our Asterisk Server, do you know how to block that IP? [Sep 4 07:41:06] NOTICE[7375]: chan_sip.c:23375 handle_request_invite: Call from '' (213.136.81.166:9306) to extension '34422' rejected because extension not found in context 'default'. Thanks in advance, -Motty -------------- next part -------------- An HTML attachment was

I got the fail2ban from epel. There were a number of issues relating to using a log file... logwatch was looking for both fail2ban and fail2ban.log logrotate file fail2ban added looked for fail2ban.log and then reset itself to syslog fail2ban itself went to syslog, over riding its fail2ban.log. took a while, but I use /var/log/fail2ban now, that finally worked through logrotates and logwatch.

Hello list. I have a question for fail2ban for bad logins on sasl. I use sasl, sendmail and cyrus-imapd. In jail.conf I use the following syntax: [sasl-iptables] enabled = true filter = sasl backend = polling action = iptables[name=sasl, port=smtp, protocol=tcp] sendmail-whois[name=sasl, dest=my at email] logpath = /var/log/maillog maxretry = 6 and the following filter: