Uncomplicated Firewall (ufw)
1
vote
1answer
2k views
nfs is blocked by ufw even though ports are opened
I've set up an nfsv4 server and it's working fine, however the firewall is blocking nfs even if port 2049 and 111 are open.
I know nfs uses some random ports that change at every boot, but how can i ...
2
votes
1answer
455 views
Looking for IPTABLES and UFW readily available, the best proven rules
ok i am up with UBUNTU finally, and liked the distro!
particularly ufw, synaptic and software manager.
as i am pretty blind newbie to linux, i need some help securing Ubuntu desktop. I've gone ...
2
votes
3answers
855 views
Why is Ubuntu permissive with outgoing connections by default?
I am pretty newbie to Linux, as most of computers for resources in my school use Linux, I just installed Ubuntu to learn.
By default iptables and ufw sets policy as under:
IPTABLES -P INPUT DROP
...
5
votes
4answers
6k views
What rules to use for UFW?
I've decided to enable the UFW that comes with Ubuntu just to make my system even more secure (especially after watching a video of a person whose computer actually got infected!), and I've enabled ...
2
votes
1answer
214 views
Enforce outgoing port for a machine inside LAN
I'm running Ubuntu Server (natty) in as a gateway/firewall in front of a private network. I have successfully enabled IP forwarding and NAT so the machines behind the firewall can connect to Internet ...
9
votes
1answer
492 views
Precautionary security measures for a home user? (firewall, antivirus, etc)
I just recently made the switch from Windows to Ubuntu, and I'm just a little paranoid when it comes to security measures.
I've looked around and from what I've read, security is not as big a concern ...
5
votes
1answer
185 views
How do I accept inbound connections for a specific program?
Windows firewall allows to specify a program that will accept inbound connections no matter on which port(s) is listening (instead of specifying the port(s) to allow for that program). Is this ...
1
vote
3answers
2k views
Set UFW before.rules without restart of server
I use UFW on my Ubuntu server. Unfortunately there are no rules in UFW to port forward to another machine.
What you need to do is edit /etc/before.rules and put routing commands there, for example
# ...
3
votes
1answer
563 views
setting up ufw for a website, I want to to disallow everything except ssh, e-mail, and http
I have read the basic instructions here:
https://help.ubuntu.com/community/UFW
I want to sudo ufw default deny and then
sudo ufw allow ssh
sudo ufw allow smtp
sudo ufw allow www
sudo ufw allow ...
7
votes
2answers
1k views
potential ufw and fail2ban conflicts
Will running both fail2ban and ufw cause problems? I noticed that fail2ban modifies iptables rules, but ufw already has a ton of iptables rules defined... so I'm not sure if fail2ban will mess these ...
4
votes
1answer
1k views
How to connect to a CISCO VPN through UFW
I am running Ubuntu 11.04 (64 bits version) and would like to be able to get connected to the VPN server (CISCO) of my company. I am able to get connected to the VPN server when I disable UFW but, ...
3
votes
6answers
2k views
UFW firewall still blocking SMB despite adding rules
I have an Ubuntu PC with ufw firewall (GUI version). I have added the preset Samba service, in and out, and even tried adding the ports manually (135-139, 445, UDP and TCP, in and out), but it still ...
3
votes
3answers
2k views
See configured rules even when inactive
I'm wondering if it's possible to get UFW to list the configured firewall rules even when it's not enabled. I only have ssh access to the server at this time, and I don't want to enable UFW if there's ...
3
votes
2answers
3k views
Why UFW has to be (re)started at boot time if it's only iptables rule manager?
README from source package says:
When installing ufw from source, you will also need to integrate it into your
boot process for the firewall to start when you restart your system. Depending
on your ...
20
votes
4answers
4k views
Why is the firewall disabled by default?
Why is ufw firewall included in Ubuntu, when it is not enabled and pre-configured by default? Most users don't even know it is there, because no GUI frontend is provided.
5
votes
2answers
698 views
Ubuntu comes with firewall by default?
I understand the Ubuntu comes with firwallul UFW is true? There is a GUI for it? if so, what is his name and where do I download? It is possible that UFW notify us (like in windows with a pop-up ...
4
votes
2answers
2k views
Is there a way to keep UFW logging out of dmesg?
There are comments in the /etc/rsyslog.d/20-ufw.conf file that give you the option to keep UFW-events from being logged to the kernel and message logs, which i have done.
I would really like to get ...
3
votes
2answers
1k views
How to enable IPv6 via miredo along with UFW?
Ubuntu provides some good information on how to enable UFW and on how to enable IPv6 with miredo:
https://wiki.ubuntu.com/UncomplicatedFirewall
https://wiki.ubuntu.com/IPv6
But what is missing is ...
4
votes
3answers
2k views
Firewall Settings for Personal File Sharing
I have ufw set up to allow samba connections, but this does not seem to allow files to be transferred through Ubuntu's "Personal File Sharing" using the Public folder. The share can be seen, but not ...
5
votes
1answer
1k views
What does this UFW log mean?
CC-02 kernel
[ 399.656733] [UFW BLOCK] IN=eth0 OUT= MAC= SRC=192.168.2.11 DST=192.168.2.22 LEN=60 TOS=0x00 PREC=0x00 TTL=64 ID=14158 DF PROTO=TCP SPT=47368 DPT=22 WINDOW=5840 RES=0x00 SYN URGP=0
...
