Skip to main content

centos7 - fail2ban running on CentOS 7 & getting “ssh connection refused”

Is anyone successfully running
fail2ban on CentOS 7 and can tell me how to do
it?




I tried to install
fail2ban with yum install fail2ban and
run it (there are no extra rules in iptables -L which seems odd
according to what I found on the net).



As soon
as I reboot the server I can't login as root or other user via ssh. The ports are not
visible when scanning and of course I get this error when I try to connect:



ssh: connect to host
            XXX.XXX.XXX.XXX port 12321: Connection refused


I changed the ssh
port, but I also tried it with port 22 without luck.




I wonder if someone knows a
solutions to this problem?



It has to be a
problem with fail2ban because I didn't install anything
else.



/>

UPDATE
I can log in via ssh after reboot.
But no html page is served. Output of iptables
-L:






Chain INPUT (policy ACCEPT) target prot opt source
destination
f2b-sshd tcp -- anywhere anywhere
multiport dports ssh ACCEPT all -- anywhere
anywhere
ctstate RELATED,ESTABLISHED ACCEPT all -- anywhere />anywhere INPUT_direct all -- anywhere
anywhere INPUT_ZONES_SOURCE all --
anywhere
anywhere INPUT_ZONES all -- anywhere
anywhere ACCEPT icmp
-- anywhere anywhere
REJECT all -- anywhere anywhere
reject-with
icmp-host-prohibited



Chain FORWARD (policy
ACCEPT) target prot opt source
destination ACCEPT all -- anywhere
anywhere
ctstate RELATED,ESTABLISHED ACCEPT all -- anywhere />anywhere FORWARD_direct all -- anywhere
anywhere FORWARD_IN_ZONES_SOURCE
all -- anywhere
anywhere FORWARD_IN_ZONES all -- anywhere
anywhere
FORWARD_OUT_ZONES_SOURCE all -- anywhere
anywhere FORWARD_OUT_ZONES all --
anywhere
anywhere ACCEPT icmp -- anywhere anywhere
REJECT all --
anywhere anywhere
reject-with icmp-host-prohibited




Chain OUTPUT (policy ACCEPT) target prot opt source />destination OUTPUT_direct all -- anywhere
anywhere




Chain FORWARD_IN_ZONES (1
references) target prot opt source
destination FWDI_public all --
anywhere
anywhere [goto] FWDI_public all -- anywhere
anywhere
[goto]



Chain FORWARD_IN_ZONES_SOURCE (1
references) target prot opt
source destination




Chain FORWARD_OUT_ZONES (1 references) target prot opt source />destination FWDO_public all -- anywhere
anywhere [goto] FWDO_public all
-- anywhere
anywhere [goto]



Chain
FORWARD_OUT_ZONES_SOURCE (1 references) target prot opt
source destination




Chain FORWARD_direct (1
references) target prot opt source
destination




Chain FWDI_public (2 references) target prot opt source />destination FWDI_public_log all -- anywhere
anywhere FWDI_public_deny
all -- anywhere
anywhere FWDI_public_allow all -- anywhere />anywhere



Chain FWDI_public_allow (1
references) target prot opt source
destination




Chain FWDI_public_deny (1 references) target prot opt source />destination



Chain FWDI_public_log (1
references) target prot opt source
destination




Chain FWDO_public (2 references)
target prot opt source
destination FWDO_public_log all -- anywhere />anywhere FWDO_public_deny all -- anywhere
anywhere FWDO_public_allow all
-- anywhere
anywhere



Chain
FWDO_public_allow (1 references) target prot opt source
destination



Chain FWDO_public_deny (1 references) target
prot opt source
destination



Chain
FWDO_public_log (1 references) target prot opt source
destination



Chain INPUT_ZONES (1 references) target prot
opt source
destination IN_public all -- anywhere
anywhere

[goto] IN_public all -- anywhere anywhere />[goto]



Chain INPUT_ZONES_SOURCE (1
references) target prot opt source
destination




Chain INPUT_direct (1 references) target prot opt source />destination



Chain IN_public (2
references) target prot opt source
destination IN_public_log all --
anywhere
anywhere IN_public_deny all -- anywhere
anywhere
IN_public_allow all -- anywhere
anywhere




Chain IN_public_allow (1 references) target prot opt source />destination ACCEPT tcp -- anywhere anywhere
tcp dpt:ssh ctstate
NEW




Chain IN_public_deny (1
references) target prot opt source
destination




Chain IN_public_log (1 references) target prot opt source />destination



Chain OUTPUT_direct (1
references) target prot opt source
destination




Chain f2b-sshd (1 references) target prot opt source />destination RETURN all -- anywhere
anywhere


Comments

Post a Comment

Popular posts from this blog

linux - Awstats - outputting stats for merged Access_logs only producing stats for one server's log

I've been attempting this for two weeks and I've accessed countless number of sites on this issue and it seems there is something I'm not getting here and I'm at a lost. I manged to figure out how to merge logs from two servers together. (Taking care to only merge the matching domains together) The logs from the first server span from 15 Dec 2012 to 8 April 2014 The logs from the second server span from 2 Mar 2014 to 9 April 2014 I was able to successfully merge them using the logresolvemerge.pl script simply enermerating each log and > out_putting_it_to_file Looking at the two logs from each server the format seems exactly the same. The problem I'm having is producing the stats page for the logs. The command I've boiled it down to is /usr/share/awstats/tools/awstats_buildstaticpages.pl -configdir=/home/User/Documents/conf/ -config=example.com awstatsprog=/usr/share/awstats/wwwroot/cgi-bin/awstats.pl dir=/home/User/Documents/parced -month=all -year=all...
Post a Comment
Read more

iLO 3 Firmware Update (HP Proliant DL380 G7)

The iLO web interface allows me to upload a .bin file ( Obtain the firmware image (.bin) file from the Online ROM Flash Component for HP Integrated Lights-Out. ) The iLO web interface redirects me to a page in the HP support website ( http://www.hp.com/go/iLO ) where I am supposed to find this .bin firmware, but no luck for me. The support website is a mess and very slow, badly categorized and generally unusable. Where can I find this .bin file? The only related link I am able to find asks me about my server operating system (what does this have to do with the iLO?!) and lets me download an .iso with no .bin file And also a related question: what is the latest iLO 3 version? (for Proliant DL380 G7, not sure if the iLO is tied to the server model)
Post a Comment
Read more

hp proliant - Smart Array P822 with HBA Mode?

We get an HP DL360 G8 with an Smart Array P822 controller. On that controller will come a HP StorageWorks D2700 . Does anybody know, that it is possible to run the Smart Array P822 in HBA mode? I found only information about the P410i, who can run HBA. If this is not supported, what you think about the LSI 9207-8e controller? Will this fit good in that setup? The Hardware we get is used but all original from HP. The StorageWorks has 25 x 900 GB SAS 10K disks. Because the disks are not new I would like to use only 22 for raid6, and the rest for spare (I need to see if the disk count is optimal or not for zfs). It would be nice if I'm not stick to SAS in future. As OS I would like to install debian stretch with zfs 0.71 as file system and software raid. I have see that hp has an page for debian to. I would like to use hba mode because it is recommend, that zfs know at most as possible about the disk, and I'm independent from the raid controller. For us zfs have many benefits, ...
Post a Comment
Read more