similar to: firewall questions

On Sun, Jun 21, 2020 at 02:33:18PM -0500, Chuck Campbell wrote: > I'm running Centos 7.8.2003, with firewalld. > > I was getting huge numbers of ssh attempts per day from a few specific ip > blocks. > > The offenders are 45.0.0.0/24, 49.0.0.0/24, 51.0.0.0/24, 111.0.0.0/24 and > 118.0.0.0/24, and they amounted to a multiple thousands of attempts per day. > I installed

I have two VMs, both with firewalld installed. One on machine It this in the IN_public chain: Chain IN_public (2 references) pkts bytes target prot opt in out source destination 81 3423 IN_public_log all -- * * 0.0.0.0/0 0.0.0.0/0 81 3423 IN_public_deny all -- * * 0.0.0.0/0 0.0.0.0/0

Hi I would like to add rules into the iptables of the Hosted Engine VM in Ovirt. the version is oVirt Engine Version: 4.1.1.8-1.el7.centos I have tried using the normal process for iptables (iptables-save etc), but it seems that the file /etc/sysconfig/iptables this is ignored in the Ovirt Engine VM. How can I add permanent rules into the Engine VM? Kind regards Andrew

Hello Julien, Am Tue, 15 Jan 2019 09:30:23 +0100 schrieb Julien dupont <marcelvierzon at gmail.com>: > In that case I see: > IP 172.16.0.3 > 192.168.1.1: ICMP echo request, id2135, seq1, length 64 > IP 172.16.0.3 > 192.168.1.1: ICMP echo request, id2135, seq2, length 64 > IP 172.16.0.3 > 192.168.1.1: ICMP echo request, id2135, seq3, length 64 > > Packet goes

I am being attacked by an entire subnet where the first two parts of the IP address remain identical but the last two parts vary sufficiently that it is not caught by fail2ban since the attempts do not meet the cut-off of a certain number of attempts within the given time. Has anyone created a fail2ban filter for this type of attack? As of right now, I have manually banned a range of IP addresses

> -----Original Message----- > From: centos-bounces at centos.org [mailto:centos-bounces at centos.org] On > Behalf Of John R Pierce > Sent: Sunday, September 11, 2016 10:44 PM > To: centos at centos.org > Subject: Re: [CentOS] Iptables not save rules > > On 9/11/2016 8:55 AM, TE Dukes wrote: > > I have been using ipset to blacklist badbots. Works like a champ! >

I just noticed that when rebooting a CentOS 7 server the firewall comes back up with both interfaces set to REJECT, instead of the eth1 interface set to ACCEPT as defined in 'permanent' firewalld configuration files. All servers are up to date. By "just noticed" I mean that I finally investigated why a newly rebooted VM failed to allow NFS connections. Prior to doing that.

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, I have a standard Centos7 AMI. Can anyone tell me whats happening here? Thanks, Andrew Aug 19 11:17:23 master dhclient[22897]: bound to 10.141.10.49 -- renewal in 1795 seconds. Aug 19 11:17:24 master network: Determining IP information for eth0... done. Aug 19 11:17:24 master network: [ OK ] Aug 19 11:17:24 master systemd: Started LSB: Bring up/down networking. Aug 19 11:23:43 master

On Tue, 2017-12-19 at 15:05 -0800, Emmett Culley wrote: > I have two VMs, both with firewalld installed. One on machine It > this in the IN_public chain: > > Chain IN_public (2 references) > pkts bytes target prot opt > in out source destination > 81 3423 IN_public_log all > -- * * 0.0.0.0/0 0.0.0.0/0

On 12/19/2017 03:37 PM, Louis Lagendijk wrote: > On Tue, 2017-12-19 at 15:05 -0800, Emmett Culley wrote: >> I have two VMs, both with firewalld installed. One on machine It >> this in the IN_public chain: >> >> Chain IN_public (2 references) >> pkts bytes target prot opt >> in out source destination >> 81 3423

ipset on CentOS6 comes with /etc/rc.d/init.d/ipset so that "service ipset reload" can be used to (re)load the configuration. CentOS7 doesn't come with an equivalent for systemd: # systemctl reload ipset.service Failed to issue method call: Unit ipset.service failed to load: No such file or directory. # systemctl start ipset.service Failed to issue method call: Unit ipset.service

Anybody on here successfully get ipset iptables sets to work _after_ a reboot? My question on StackExchange http://unix.stackexchange.com/questions/149536/upon-bootup-all-iptables-are-lost-because-the-kernel-module-ip-set-is-not-loade Some of the things that need to be in place, otherwise iptables does not load: 1.) The kernel module ip_set needs to be loaded. 2.) The "sets" need to be

ip_forward was not enabled, now it is. Still same result: On VPN_office I use 'tcpdump -npi any icmp and host 192.168.1.1' and ping 192.168.1.1 from the client: 5:28:42.646203 IP 172.16.0.3 > 192.168.1.1: ICMP echo request, id 1584, seq 1, length 64 15:28:43.663014 IP 172.16.0.3 > 192.168.1.1: ICMP echo request, id 1584, seq 2, length 64 15:28:44.688133 IP 172.16.0.3 >

I have been using shorewall for years with ipsets. I have encountered a problem after upgrading from 4.2.11 to 4.4.10. When I run ''shorewall-check'' or ''shorewall start'', it halts with the error: ---------------------------------------------------------------------- ERROR: ipset names in Shorewall configuration files require Ipset Match in your kernel and

http://bugzilla.netfilter.org/show_bug.cgi?id=733 Summary: ipset restore won't restore from output of ipset save Product: ipset Version: unspecified Platform: All OS/Version: Debian GNU/Linux Status: NEW Severity: normal Priority: P5 Component: default AssignedTo: netfilter-buglog at

Hi Robert, On 07/18/2017 11:43 PM, Robert Schetterer wrote: > i guess not, but typical bots arent using ssl, check it > > however fail2ban sometimes is to slow I have configured dovecot with auth_failure_delay = 10 secs I hope that before the 10 sec are over, dovecot will have logged about the failed login attempt, and fail2ban will have blocked the ip by then. MJ

On Fri, Dec 14, 2018 at 03:14:12PM -0700, Warren Young wrote: > On Dec 14, 2018, at 2:30 PM, Jon LaBadie <jcu at labadie.us> wrote: > > > > After a recent large update, firewalld's status contains > > many lines of the form: > > > > WARNING: COMMAND_FAILED: '/usr/sbin/iptables? > > What?s the rest of the command? Well, there are about 20 of

Hi all I have a CentOS6 box with shorewall-4.5.21. If I have IPSET= in shorewall.conf and I issue the command "shorewall add ppp:192.168.33.3 ptp", I get the error: /usr/share/shorewall/lib.cli: line 585: [: too many arguments ERROR: Zone ptp, interface ppp does not have a dynamic host list The error is corrected setting the actual path to ipset in shorewall.conf, or via the patch:

Hello, I have been using ipset to blacklist badbots. Works like a champ! The only problem is if I do a system reboot, I lose the ipset and the rule. I changed /etc/sysconfig/iptables.conf to: IPTABLES_SAVE_ON_RESTART="yes" IPTABLES_SAVE_ON_STOP="yes" And followed the instructions in: https://www.centos.org/forums/viewtopic.php?t=3853 The changes are still not saved.