Cannot Connect From Certain IP
From Kolmisoft Wiki
Jump to navigationJump to search
The printable version is no longer supported and may have rendering errors. Please update your browser bookmarks and please use the default browser print function instead.
Check if IP blocked or not at this moment by iptables:
iptables -L -n | grep 192.168.11.125
Output:
REJECT all -- 192.168.11.125 0.0.0.0/0 reject-with icmp-port-unreachable
Check Fail2ban log for blocked IP:
grep -F "192.168.11.125" /var/log/fail2ban.log
Output:
2020-02-04 08:41:12,175 fail2ban.filter [1788]: INFO [asterisk-iptables] Found 192.168.11.125 2020-02-04 08:41:13,131 fail2ban.actions [1788]: NOTICE [asterisk-iptables] Ban 192.168.11.125 2020-02-04 08:51:13,973 fail2ban.actions [1788]: NOTICE [asterisk-iptables] Unban 192.168.11.125 2020-02-04 08:51:28,470 fail2ban.filter [1788]: INFO [asterisk-iptables] Found 192.168.11.125 2020-02-04 08:53:28,767 fail2ban.filter [1788]: INFO [asterisk-iptables] Found 192.168.11.125 2020-02-04 08:55:29,018 fail2ban.filter [1788]: INFO [asterisk-iptables] Found 192.168.11.125 2020-02-04 08:57:29,433 fail2ban.filter [1788]: INFO [asterisk-iptables] Found 192.168.11.125 2020-02-04 08:59:28,785 fail2ban.filter [1788]: INFO [asterisk-iptables] Found 192.168.11.125 2020-02-04 08:59:29,689 fail2ban.actions [1788]: NOTICE [asterisk-iptables] Ban 192.168.11.125
To check Asterisk log by IP:
grep -F "192.168.11.125" /var/log/asterisk/messages
Output:
[2020-02-04 08:53:28] NOTICE[2451] chan_sip.c: Registration from '<sip:123456@192.168.11.120>' failed for '192.168.11.125:62219' - Wrong password [2020-02-04 08:55:28] NOTICE[2451] chan_sip.c: Registration from '<sip:123456@192.168.11.120>' failed for '192.168.11.125:62219' - Wrong password [2020-02-04 08:57:28] NOTICE[2451] chan_sip.c: Registration from '<sip:123456@192.168.11.120>' failed for '192.168.11.125:62219' - Wrong password [2020-02-04 08:59:28] NOTICE[2451] chan_sip.c: Registration from '<sip:123456@192.168.11.120>' failed for '192.168.11.125:62219' - Wrong password