* Documentation:  https://help.ubuntu.com
 * Management:     https://landscape.canonical.com
root@tcadmin:~# ufw help
root@tcadmin:~# wget https://downloads.tcadmin.net/installer/tcadmin-2-bi.noarch.deb;dpkg -i tcadmin-2-bi.noarch.deb
--2021-02-12 05:40:59--  https://downloads.tcadmin.net/installer/tcadmin-2-bi.noarch.deb
Resolving downloads.tcadmin.net (downloads.tcadmin.net)... 185.93.1.241
Connecting to downloads.tcadmin.net (downloads.tcadmin.net)|185.93.1.241|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 92734118 (88M) [application/vnd.debian.binary-package]
Saving to: ‘tcadmin-2-bi.noarch.deb.1’

tcadmin-2-bi.noarch.deb.1                            100%[=====================================================================================================================>]  88.44M  98.7MB/s    in 0.9s

2021-02-12 05:41:00 (98.7 MB/s) - ‘tcadmin-2-bi.noarch.deb.1’ saved [92734118/92734118]

(Reading database ... 126155 files and directories currently installed.)
Preparing to unpack tcadmin-2-bi.noarch.deb ...
The TCAdmin Monitor has been stopped
The TCAdmin Monitor service has been uninstalled successfully
The TCAdmin Service Manager is stopped
The TCAdmin Service Manager service has been uninstalled successfully
useradd: user 'tcadmin' already exists
Unpacking tcadmin (2-1) over (2-1) ...
iptables: Bad rule (does a matching rule exist in that chain?).
iptables: Bad rule (does a matching rule exist in that chain?).
iptables: Bad rule (does a matching rule exist in that chain?).
iptables: Bad rule (does a matching rule exist in that chain?).
iptables: Bad rule (does a matching rule exist in that chain?).
Setting up tcadmin (2-1) ...
chown: invalid user: ‘tcadmin’
# Generated by iptables-save v1.8.4 on Fri Feb 12 05:41:15 2021
*filter
:INPUT DROP [0:0]
:FORWARD DROP [0:0]
:OUTPUT ACCEPT [0:0]
:ufw-after-forward - [0:0]
:ufw-after-input - [0:0]
:ufw-after-logging-forward - [0:0]
:ufw-after-logging-input - [0:0]
:ufw-after-logging-output - [0:0]
:ufw-after-output - [0:0]
:ufw-before-forward - [0:0]
:ufw-before-input - [0:0]
:ufw-before-logging-forward - [0:0]
:ufw-before-logging-input - [0:0]
:ufw-before-logging-output - [0:0]
:ufw-before-output - [0:0]
:ufw-logging-allow - [0:0]
:ufw-logging-deny - [0:0]
:ufw-not-local - [0:0]
:ufw-reject-forward - [0:0]
:ufw-reject-input - [0:0]
:ufw-reject-output - [0:0]
:ufw-skip-to-policy-forward - [0:0]
:ufw-skip-to-policy-input - [0:0]
:ufw-skip-to-policy-output - [0:0]
:ufw-track-forward - [0:0]
:ufw-track-input - [0:0]
:ufw-track-output - [0:0]
:ufw-user-forward - [0:0]
:ufw-user-input - [0:0]
:ufw-user-limit - [0:0]
:ufw-user-limit-accept - [0:0]
:ufw-user-logging-forward - [0:0]
:ufw-user-logging-input - [0:0]
:ufw-user-logging-output - [0:0]
:ufw-user-output - [0:0]
-A INPUT -p tcp -m tcp --dport 5000:5100 -j ACCEPT
-A INPUT -p tcp -m tcp --dport 8821 -j ACCEPT
-A INPUT -p tcp -m tcp --dport 8891 -j ACCEPT
-A INPUT -p tcp -m tcp --dport 8890 -j ACCEPT
-A INPUT -p tcp -m tcp --dport 8880 -j ACCEPT
-A INPUT -j ufw-before-logging-input
-A INPUT -j ufw-before-input
-A INPUT -j ufw-after-input
-A INPUT -j ufw-after-logging-input
-A INPUT -j ufw-reject-input
-A INPUT -j ufw-track-input
-A FORWARD -j ufw-before-logging-forward
-A FORWARD -j ufw-before-forward
-A FORWARD -j ufw-after-forward
-A FORWARD -j ufw-after-logging-forward
-A FORWARD -j ufw-reject-forward
-A FORWARD -j ufw-track-forward
-A OUTPUT -j ufw-before-logging-output
-A OUTPUT -j ufw-before-output
-A OUTPUT -j ufw-after-output
-A OUTPUT -j ufw-after-logging-output
-A OUTPUT -j ufw-reject-output
-A OUTPUT -j ufw-track-output
-A ufw-after-input -p udp -m udp --dport 137 -j ufw-skip-to-policy-input
-A ufw-after-input -p udp -m udp --dport 138 -j ufw-skip-to-policy-input
-A ufw-after-input -p tcp -m tcp --dport 139 -j ufw-skip-to-policy-input
-A ufw-after-input -p tcp -m tcp --dport 445 -j ufw-skip-to-policy-input
-A ufw-after-input -p udp -m udp --dport 67 -j ufw-skip-to-policy-input
-A ufw-after-input -p udp -m udp --dport 68 -j ufw-skip-to-policy-input
-A ufw-after-input -m addrtype --dst-type BROADCAST -j ufw-skip-to-policy-input
-A ufw-after-logging-forward -m limit --limit 3/min --limit-burst 10 -j LOG --log-prefix "[UFW BLOCK] "
-A ufw-after-logging-input -m limit --limit 3/min --limit-burst 10 -j LOG --log-prefix "[UFW BLOCK] "
-A ufw-before-forward -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
-A ufw-before-forward -p icmp -m icmp --icmp-type 3 -j ACCEPT
-A ufw-before-forward -p icmp -m icmp --icmp-type 11 -j ACCEPT
-A ufw-before-forward -p icmp -m icmp --icmp-type 12 -j ACCEPT
-A ufw-before-forward -p icmp -m icmp --icmp-type 8 -j ACCEPT
-A ufw-before-forward -j ufw-user-forward
-A ufw-before-input -i lo -j ACCEPT
-A ufw-before-input -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
-A ufw-before-input -m conntrack --ctstate INVALID -j ufw-logging-deny
-A ufw-before-input -m conntrack --ctstate INVALID -j DROP
-A ufw-before-input -p icmp -m icmp --icmp-type 3 -j ACCEPT
-A ufw-before-input -p icmp -m icmp --icmp-type 11 -j ACCEPT
-A ufw-before-input -p icmp -m icmp --icmp-type 12 -j ACCEPT
-A ufw-before-input -p icmp -m icmp --icmp-type 8 -j ACCEPT
-A ufw-before-input -p udp -m udp --sport 67 --dport 68 -j ACCEPT
-A ufw-before-input -j ufw-not-local
-A ufw-before-input -d 224.0.0.251/32 -p udp -m udp --dport 5353 -j ACCEPT
-A ufw-before-input -d 239.255.255.250/32 -p udp -m udp --dport 1900 -j ACCEPT
-A ufw-before-input -j ufw-user-input
-A ufw-before-output -o lo -j ACCEPT
-A ufw-before-output -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
-A ufw-before-output -j ufw-user-output
-A ufw-logging-allow -m limit --limit 3/min --limit-burst 10 -j LOG --log-prefix "[UFW ALLOW] "
-A ufw-logging-deny -m conntrack --ctstate INVALID -m limit --limit 3/min --limit-burst 10 -j RETURN
-A ufw-logging-deny -m limit --limit 3/min --limit-burst 10 -j LOG --log-prefix "[UFW BLOCK] "
-A ufw-not-local -m addrtype --dst-type LOCAL -j RETURN
-A ufw-not-local -m addrtype --dst-type MULTICAST -j RETURN
-A ufw-not-local -m addrtype --dst-type BROADCAST -j RETURN
-A ufw-not-local -m limit --limit 3/min --limit-burst 10 -j ufw-logging-deny
-A ufw-not-local -j DROP
-A ufw-skip-to-policy-forward -j DROP
-A ufw-skip-to-policy-input -j DROP
-A ufw-skip-to-policy-output -j ACCEPT
-A ufw-track-output -p tcp -m conntrack --ctstate NEW -j ACCEPT
-A ufw-track-output -p udp -m conntrack --ctstate NEW -j ACCEPT
-A ufw-user-input -p tcp -m tcp --dport 22 -m comment --comment "\'dapp_OpenSSH\'" -j ACCEPT
-A ufw-user-input -p tcp -m tcp --dport 3306 -j ACCEPT
-A ufw-user-input -p udp -m udp --dport 3306 -j ACCEPT
-A ufw-user-input -p tcp -m tcp --dport 8880 -j ACCEPT
-A ufw-user-input -p udp -m udp --dport 8880 -j ACCEPT
-A ufw-user-limit -m limit --limit 3/min -j LOG --log-prefix "[UFW LIMIT BLOCK] "
-A ufw-user-limit -j REJECT --reject-with icmp-port-unreachable
-A ufw-user-limit-accept -j ACCEPT
COMMIT
# Completed on Fri Feb 12 05:41:15 2021

Unhandled Exception:
System.ArgumentException: invalid username
Parameter name: user
  at Mono.Unix.UnixUserInfo..ctor (System.String user) [0x00034] in <97ee56d4e0644027bc13259277d0bcbc>:0
  at j.a () [0x000a2] in <0d09be099f2848bf704a59ce0eef9f3c>:0
  at k.ilpBa () [0x0010f] in <0d09be099f2848bf704a59ce0eef9f3c>:0
  at h.a (System.String[] a) [0x00444] in <0d09be099f2848bf704a59ce0eef9f3c>:0
[ERROR] FATAL UNHANDLED EXCEPTION: System.ArgumentException: invalid username
Parameter name: user
  at Mono.Unix.UnixUserInfo..ctor (System.String user) [0x00034] in <97ee56d4e0644027bc13259277d0bcbc>:0
  at j.a () [0x000a2] in <0d09be099f2848bf704a59ce0eef9f3c>:0
  at k.ilpBa () [0x0010f] in <0d09be099f2848bf704a59ce0eef9f3c>:0
  at h.a (System.String[] a) [0x00444] in <0d09be099f2848bf704a59ce0eef9f3c>:0
The TCAdmin Service Manager service has been installed successfully
The TCAdmin Monitor has been started
The TCAdmin Service Manager has been started