HI, I have restored a linode backup following a crash and since then direct access is refused. When i do a port check 8443 shows as closed. i have checked unifi and port 8443 is still used:

each unifi instance requires a set of ports:

#

device inform

unifi.http.port=8080

controller UI / API

unifi.https.port=8443

portal redirect port for HTTP

portal.http.port=8880

portal redirect port for HTTPs

portal.https.port=8843

local-bound port for DB server

unifi.db.port=27117

UDP port used for STUN

unifi.stun.port=3478

#

the IP devices should be talking to for inform

system_ip=a.b.c.d

disable mongodb journaling

unifi.db.nojournal=false

extra mongod args

unifi.db.extraargs

my ip table shows the following:

sudo iptables -L
sudo: unable to resolve host UNMSUnifi
Chain INPUT (policy ACCEPT)
target prot opt source destination
ACCEPT all -- anywhere anywhere
ACCEPT all -- anywhere anywhere
ACCEPT all -- anywhere anywhere
ACCEPT all -- anywhere anywhere
ACCEPT all -- anywhere anywhere ctstate RELATED,ESTABLISHED
ACCEPT all -- anywhere anywhere ctstate RELATED,ESTABLISHED
ACCEPT tcp -- anywhere anywhere tcp dpt:ssh
ACCEPT tcp -- anywhere anywhere multiport dports http-alt,8443,8880,8843
ACCEPT udp -- anywhere anywhere udp dpt:3478
DROP all -- anywhere anywhere

Chain FORWARD (policy DROP)
target prot opt source destination
DOCKER-USER all -- anywhere anywhere
DOCKER-ISOLATION-STAGE-1 all -- anywhere anywhere
ACCEPT all -- anywhere anywhere ctstate RELATED,ESTABLISHED
DOCKER all -- anywhere anywhere
ACCEPT all -- anywhere anywhere
ACCEPT all -- anywhere anywhere
ACCEPT all -- anywhere anywhere
ACCEPT all -- anywhere anywhere ctstate RELATED,ESTABLISHED
DOCKER all -- anywhere anywhere
ACCEPT all -- anywhere anywhere
ACCEPT all -- anywhere anywhere

Chain OUTPUT (policy ACCEPT)
target prot opt source destination

Chain DOCKER (2 references)
target prot opt source destination
ACCEPT tcp -- anywhere 172.19.0.2 tcp dpt:https
ACCEPT tcp -- anywhere 172.19.0.2 tcp dpt:http
ACCEPT tcp -- anywhere 172.19.0.3 tcp dpt:24224

Chain DOCKER-ISOLATION-STAGE-1 (1 references)
target prot opt source destination
DOCKER-ISOLATION-STAGE-2 all -- anywhere anywhere
DROP all -- !172.18.0.0/16 anywhere
DROP all -- anywhere !172.18.0.0/16
DOCKER-ISOLATION-STAGE-2 all -- anywhere anywhere
RETURN all -- anywhere anywhere

Chain DOCKER-ISOLATION-STAGE-2 (2 references)
target prot opt source destination
DROP all -- anywhere anywhere
DROP all -- anywhere anywhere
RETURN all -- anywhere anywhere

Chain DOCKER-USER (1 references)
target prot opt source destination
RETURN all -- anywhere anywhere

Any help would be greatly appreciated as i have limited knowledge with Linux sorry.

thanks