In/var/log/fail2ban.log
, the following output found:
fail2ban.filter [XXXXX]: INFO [ssh] Ignore 127.0.0.1 by ignoreself rule
fail2ban.filter [XXXXX]: INFO [ssh] Ignore 127.0.0.1 by ignoreself rule
In
/var/log/secure
the following output is found:
server sshd[XXXXX]: refused connect from 127.0.0.1 (127.0.0.1)
server sshd[XXXXX]: refused connect from 127.0.0.1 (127.0.0.1)
Fail2ban configuration has the following parameters set up:
# "ignorself" specifies whether the local resp. own IP addresses should be ignored
# (default is true). Fail2ban will not ban a host which matches such addresses.
ignorself = true
# "ignoreip" can be a list of IP addresses, CIDR masks or DNS hosts. Fail2ban
# will not ban a host which matches an address in this list. Several addresses
# can be defined using space (and/or comma) separator.
ignoreip = 127.0.0.1/8 ::1
Cause
Custom configurations causing refused connections
from localhost (127.0.0.1)
Resolution
Login to the
server via SSH
Open
/etc/hosts.allow
in any text editor and allow connections from localhost by adding:
sshd: 127.0.0.1
Reload the sshd service:
#
systemctl reload sshd
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