Nigeria
Kenya
South Africa
China
India
United States
Indonesia
Brazil
Egypt
Tanzania
Ethiopia
Uganda
Congo, Dem. Rep.
Ghana
Cote d'Ivoire
Cameroon
Rwanda
Germany
France
Spain
United Kingdom
Italy
Russia
Japan
Bangladesh
Mexico
Philippines
Pakistan
Turkey
Thailand
Korea, (South)
Netherlands

Login on the console with a sudo user (root)

Approach 1: Simple

To List UFW (default firewall on Ubuntu) run the following command

$ sudo ufw status verbose

Sample output

Status: active
Logging: on (low)
Default: deny (incoming), allow (outgoing), deny (routed)
New profiles: skip

To Action From
— —— —-
66.61.246.79 80/tcp ALLOW IN Anywhere
66.61.246.78 80/tcp ALLOW IN Anywhere

To disable UFW firewall run the following command

$ sudo ufw disable

——————————————————————————————————

Old school Approach

Alternatively, run the following command to list any existing firewall rules

$ sudo iptables -L –n

Sample output

Chain INPUT (policy ACCEPT)
target prot opt source destination
ACCEPT udp — 0.0.0.0/0 0.0.0.0/0 udp dpt:53
ACCEPT tcp — 0.0.0.0/0 0.0.0.0/0 tcp dpt:53
ACCEPT udp — 0.0.0.0/0 0.0.0.0/0 udp dpt:67
ACCEPT tcp — 0.0.0.0/0 0.0.0.0/0 tcp dpt:67

Chain FORWARD (policy ACCEPT)
target prot opt source destination
ACCEPT all — 0.0.0.0/0 172.148.102.0/24 state RELATED,ESTABLISHED
ACCEPT all — 172.148.102.0/24 0.0.0.0/0
ACCEPT all — 0.0.0.0/0 0.0.0.0/0
REJECT all — 0.0.0.0/0 0.0.0.0/0 reject-with icmp-port-unreachable
REJECT all — 0.0.0.0/0 0.0.0.0/0 reject-with icmp-port-unreachable

Chain OUTPUT (policy ACCEPT)
target prot opt source destination

To stop and Flush all the rules run the following commands

$ sudo iptables -X
$ sudo iptables -t nat -F
$ sudo iptables -t nat -X
$ sudo iptables -t mangle -F
$ sudo iptables -t mangle -X
$ sudo iptables -P INPUT ACCEPT
$ sudo iptables -P FORWARD ACCEPT
$ sudo iptables -P OUTPUT ACCEPT

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