Hello,
this is my first post. idk what to say, so i come to the point:
I have set up a server that also runs very well in the local network. However, I wanted to share it with the outside world. On every website there are other ports that have to be released. I have now released the ports (see picture):
However, it is still not possible to connect to the server from either Ipv4 or Ipv6. (Important: It is found in the server list). What can I do?
Im hosting not at home, but by my self.
I use Ubuntu.
How can i change firewall-settings in Linux (Ubuntu).
No, i don´t know how to work with iptables or ufw, i only worked with an raspberrypi => Tvheadend and OMV
Thanks for helping
@
I have changed it. Is ufw configured right?
`Zu Aktion Von
5900/tcp ALLOW IN Anywhere
9987 ALLOW IN Anywhere
30033 ALLOW IN Anywhere
9987/udp ALLOW IN Anywhere
30033/tcp ALLOW IN Anywhere
5900/tcp (v6) ALLOW IN Anywhere (v6)
9987 (v6) ALLOW IN Anywhere (v6)
30033 (v6) ALLOW IN Anywhere (v6)
9987/udp (v6) ALLOW IN Anywhere (v6)
30033/tcp (v6) ALLOW IN Anywhere (v6)`
sudo ufw status verbose:
(Translated:
Status: active:
protocol: on (low)
default settings: deny, allow, disable
new profile: skip
9987 ALLOW IN Anywhere
30033 ALLOW IN Anywhere
9987/udp ALLOW IN Anywhere
30033/tcp ALLOW IN Anywhere
22/tcp ALLOW IN Anywhere
5900/tcp (v6) ALLOW IN Anywhere (v6)
9987 (v6) ALLOW IN Anywhere (v6)
30033 (v6) ALLOW IN Anywhere (v6)
9987/udp (v6) ALLOW IN Anywhere (v6)
30033/tcp (v6) ALLOW IN Anywhere (v6)
22/tcp (v6) ALLOW IN Anywhere (v6)
sudo iptables -L -n:
Chain INPUT (policy ACCEPT)
target prot opt source destination
ufw-before-logging-input all -- 0.0.0.0/0 0.0.0.0/0
ufw-before-input all -- 0.0.0.0/0 0.0.0.0/0
ufw-after-input all -- 0.0.0.0/0 0.0.0.0/0
ufw-after-logging-input all -- 0.0.0.0/0 0.0.0.0/0
ufw-reject-input all -- 0.0.0.0/0 0.0.0.0/0
ufw-track-input all -- 0.0.0.0/0 0.0.0.0/0
Chain FORWARD (policy ACCEPT)
target prot opt source destination
ufw-before-logging-forward all -- 0.0.0.0/0 0.0.0.0/0
ufw-before-forward all -- 0.0.0.0/0 0.0.0.0/0
ufw-after-forward all -- 0.0.0.0/0 0.0.0.0/0
ufw-after-logging-forward all -- 0.0.0.0/0 0.0.0.0/0
ufw-reject-forward all -- 0.0.0.0/0 0.0.0.0/0
ufw-track-forward all -- 0.0.0.0/0 0.0.0.0/0
Chain OUTPUT (policy ACCEPT)
target prot opt source destination
ufw-before-logging-output all -- 0.0.0.0/0 0.0.0.0/0
ufw-before-output all -- 0.0.0.0/0 0.0.0.0/0
ufw-after-output all -- 0.0.0.0/0 0.0.0.0/0
ufw-after-logging-output all -- 0.0.0.0/0 0.0.0.0/0
ufw-reject-output all -- 0.0.0.0/0 0.0.0.0/0
ufw-track-output all -- 0.0.0.0/0 0.0.0.0/0
Chain ufw-after-forward (1 references)
target prot opt source destination
Chain ufw-after-input (1 references)
target prot opt source destination
ufw-skip-to-policy-input udp -- 0.0.0.0/0 0.0.0.0/0 udp dpt:137
ufw-skip-to-policy-input udp -- 0.0.0.0/0 0.0.0.0/0 udp dpt:138
ufw-skip-to-policy-input tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:139
ufw-skip-to-policy-input tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:445
ufw-skip-to-policy-input udp -- 0.0.0.0/0 0.0.0.0/0 udp dpt:67
ufw-skip-to-policy-input udp -- 0.0.0.0/0 0.0.0.0/0 udp dpt:68
ufw-skip-to-policy-input all -- 0.0.0.0/0 0.0.0.0/0 ADD RTYPE match dst-type BROADCAST
Chain ufw-after-logging-forward (1 references)
target prot opt source destination
LOG all -- 0.0.0.0/0 0.0.0.0/0 limit: avg 3/min b urst 10 LOG flags 0 level 4 prefix "[UFW BLOCK] "
Chain ufw-after-logging-input (1 references)
target prot opt source destination
LOG all -- 0.0.0.0/0 0.0.0.0/0 limit: avg 3/min b urst 10 LOG flags 0 level 4 prefix "[UFW BLOCK] "
Chain ufw-after-logging-output (1 references)
target prot opt source destination
Chain ufw-after-output (1 references)
target prot opt source destination
Chain ufw-before-forward (1 references)
target prot opt source destination
ACCEPT all -- 0.0.0.0/0 0.0.0.0/0 ctstate RELATED,ES TABLISHED
ACCEPT icmp -- 0.0.0.0/0 0.0.0.0/0 icmptype 3
ACCEPT icmp -- 0.0.0.0/0 0.0.0.0/0 icmptype 11
ACCEPT icmp -- 0.0.0.0/0 0.0.0.0/0 icmptype 12
ACCEPT icmp -- 0.0.0.0/0 0.0.0.0/0 icmptype 8
ufw-user-forward all -- 0.0.0.0/0 0.0.0.0/0
Chain ufw-before-input (1 references)
target prot opt source destination
ACCEPT all -- 0.0.0.0/0 0.0.0.0/0
ACCEPT all -- 0.0.0.0/0 0.0.0.0/0 ctstate RELATED,ES TABLISHED
ufw-logging-deny all -- 0.0.0.0/0 0.0.0.0/0 ctstate INV ALID
DROP all -- 0.0.0.0/0 0.0.0.0/0 ctstate INVALID
ACCEPT icmp -- 0.0.0.0/0 0.0.0.0/0 icmptype 3
ACCEPT icmp -- 0.0.0.0/0 0.0.0.0/0 icmptype 11
ACCEPT icmp -- 0.0.0.0/0 0.0.0.0/0 icmptype 12
ACCEPT icmp -- 0.0.0.0/0 0.0.0.0/0 icmptype 8
ACCEPT udp -- 0.0.0.0/0 0.0.0.0/0 udp spt:67 dpt:68
ufw-not-local all -- 0.0.0.0/0 0.0.0.0/0
ACCEPT udp -- 0.0.0.0/0 224.0.0.251 udp dpt:5353
ACCEPT udp -- 0.0.0.0/0 239.255.255.250 udp dpt:1900
ufw-user-input all -- 0.0.0.0/0 0.0.0.0/0
Chain ufw-before-logging-forward (1 references)
target prot opt source destination
Chain ufw-before-logging-input (1 references)
target prot opt source destination
Chain ufw-before-logging-output (1 references)
target prot opt source destination
Chain ufw-before-output (1 references)
target prot opt source destination
ACCEPT all -- 0.0.0.0/0 0.0.0.0/0
ACCEPT all -- 0.0.0.0/0 0.0.0.0/0 ctstate RELATED,ES TABLISHED
ufw-user-output all -- 0.0.0.0/0 0.0.0.0/0
Chain ufw-logging-allow (0 references)
target prot opt source destination
LOG all -- 0.0.0.0/0 0.0.0.0/0 limit: avg 3/min b urst 10 LOG flags 0 level 4 prefix "[UFW ALLOW] "
Chain ufw-logging-deny (2 references)
target prot opt source destination
RETURN all -- 0.0.0.0/0 0.0.0.0/0 ctstate INVALID li mit: avg 3/min burst 10
LOG all -- 0.0.0.0/0 0.0.0.0/0 limit: avg 3/min b urst 10 LOG flags 0 level 4 prefix "[UFW BLOCK] "
Chain ufw-not-local (1 references)
target prot opt source destination
RETURN all -- 0.0.0.0/0 0.0.0.0/0 ADDRTYPE match dst -type LOCAL
RETURN all -- 0.0.0.0/0 0.0.0.0/0 ADDRTYPE match dst -type MULTICAST
RETURN all -- 0.0.0.0/0 0.0.0.0/0 ADDRTYPE match dst -type BROADCAST
ufw-logging-deny all -- 0.0.0.0/0 0.0.0.0/0 limit: avg 3/min burst 10
DROP all -- 0.0.0.0/0 0.0.0.0/0
Chain ufw-reject-forward (1 references)
target prot opt source destination
Chain ufw-reject-input (1 references)
target prot opt source destination
If you need more Infos please ask.
Thank you very much!
@F
I have a Proplem…
vito@vitoT400:~$ sudo ufw allow 9987:9987/udp
[sudo] Passwort für vito:
ERROR: Ungültiger Port
vito@vitoT400:~$ sudo ufw allow 9987:9987/udp
ERROR: Ungültiger Port
vito@vitoT400:~$ sudo ufw allow 30033:30033/tcp
ERROR: Ungültiger Port
vito@vitoT400:~$
Ungültiger Port means invalid Port
Or did you mean i should only add these ? but i need 22 too.
A lot of cheap/ISP routers are unable to resolve your own IP address from devices within your LAN.
I use a Fritz!box 7590, i think it should be possible.
I’ll send you the link anyway, if you want you can look, but you don’t have to 
