Uncomplicated Firewall (ufw)

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Trouble installing ircd-hybrid

I have installed ircd-hybrid and commented out the host line in /etc/ircd-hybrid/ircd.conf I have also allowed ports 6665-6669 in ufw and restarted ircd-hybrid This is the error I get when trying ...
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1answer
249 views

ufw firewall disabled - How to turn it back on?

I am using Ubuntu 12.04 and just recently noticed, that my ufw-firewall is turned [off]. I know It's turned [off] by default, but when I set Ubuntu up, I turned [on] the firewall with: sudo ufw, but ...
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1answer
719 views

what does this mean “80/tcp filtered http”

Our linux server(ubuntu) stop listing on port 80. this is what i got : PORT STATE SERVICE 22/tcp open ssh 80/tcp filtered http what does this "80/tcp filtered http" means? What ...
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2answers
931 views

Problem with ufw enable: libkmod: ERROR ../libkmod/libkmod.c

I am trying to enable ufw and this is the output: root@p:~# ufw enable Command may disrupt existing ssh connections. Proceed with operation (y|n)? y ERROR: problem running ufw-init libkmod: ERROR ...
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1answer
112 views

How can I check what ports an app is using so I can enable them in ufw?

With the soon to be demise of Ubuntu One I started looking at other ways to store backup in the cloud. I already had the Dropbox client installed and have been storing back ups there for now. Not ...
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45 views

why are glided and glideusd listenening on tcp ports 3490 and 3492?

Ubuntu 12.04 LTS Dell factory pre-install on a Precision M4800. ~$ sudo ufw show listening tcp: 3490 * (glided) 3492 * (glideusd) I believe these are related to the glidepoint touchpad, but why ...
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2answers
131 views

Why does DEFAULT INCOMING DENY not stop Firefox from working?

If UFW is actually not an application layer firewall but a "interface to iptables", how can it be if I have by DEFAULT INCOMING DENY and OUTGOING ALLOW setting that ANY internet application is ...
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19 views

Notificaciones de Ufw

Anterior Utilize Gufw y firestater ellos me daban notification de conneciones no desea a puertos y/o cualquier tipo de accion que no yo no quiciera pero estoy avanzando a ufw (La Base y no logro ...
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244 views

UFW locks me out of server everytime I run it

Background: I'm setting up a new 12.04 instance on a VPS with a new provider.The VPS provider only offers a 32bit image but that really shouldn't matter here. I have no local access to the machine and ...
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1answer
202 views

Can't Get UFW Firewall to Allow Anything

I'm trying to set UFW (using GUFW) to create a firewall that only allows network connections when OpenVPN is connected. So in GUFW I deny incoming and outgoing connections and enable the Firewall. I ...
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3answers
245 views

Maybe abuse of my server

I have a vps at hetzner.de with vmware running several instances, one of them is an Ubuntu server 13.10, primarily acting as mysql-server for several websites. Today I received an email from hetzner, ...
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99 views

why Ubuntu Firewall not showing verbose?

Even Ubuntu Firewall in running mode , I am not getting the data. may I know why ? root@ubuntu:~# sudo ufw status numbered Status: inactive root@ubuntu:~# service ufw start start: Job is already ...
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225 views

Am I under attack?

When I checked my log viewer, I noticed that ufw is blockng many ips that I'm not familiar with! I have only three computers in my local network at the time when I was checking my log viewer I was ...
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2answers
818 views

UFW not blocking connections to docker instance

I have a webservice running inside a docker instance which was run using the following command: sudo docker run -d -p 4040:4040 .... My UFW rules look like this: ~ sudo ufw status Status: active ...
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212 views

How do I extract the source MAC from a [UFW BLOCK] entry?

I have the following UFW Block entry. How do I get the source MAC? I'm getting a ton from the same MAC=e8:11:32:cb:d9:42:54:04:a6:ba:22:f8:08:00 doing port scanning. If it matters, I'm using 12.04 ...
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126 views

Configuring ufw and iPredator VPN

I am running a VPN via IPredator on Ubuntu 12.04 Desktop, which works perfectly, when ufw is disabled. When I enable ufw, I logically cannot establish a connection. IPredator states that I have to ...
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21 views

How do I grant UFW manage access to a particular user?

I would like to allow a particular user the permission to run "ufw allow" (or equivalent). Ideally without giving that user the ability to run other privileged commands, or give firewall authority to ...
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2answers
2k views

how do you create an app profile for ufw?

Ufw has a command that lists out profiles to which you can further explore their profile definitions $ ufw app list And $ ufw app PROFILE {app profile title} I was wondering how you can ...
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2answers
188 views

Access computer on internal network from Internet

My setup: Ubuntu 13.10 server with ufw, facing outside world on eth0, IP forwarding and masquerading working OK. Internal network 192.168.0/24 on eht1, no problem accessing the internet. I need to ...
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942 views

How to configure ufw to really allow outgoing connections

I have hard time to understand how ufw should be configured. The problem is that I allowed outgoing traffic, and still I cannot do virtually anything. I'm using Ubuntu 12.04 on VPS. ufw --version ...
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2answers
729 views

How do I whitelist some connections by ip from being dropped by connlimit?

I'm using these rules in /etc/ufw/before.rules # Limit to 20 concurrent connections on port 80 per IP -A ufw-before-input -p tcp --syn --dport 80 -m connlimit --connlimit-above 20 -j DROP -A ...
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206 views

Unable to bridge using OpenVPN on Ubuntu 12.04 Server

I set up an Ubuntu Server 12.04 LTS in my LAN and forwarded tcp port 1194 to it. OpenVPN-Server is running, the Client (Ubuntu 12.04 LTS) can connect. Device tap0 is visible on client: tap0 ...
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149 views

Why is UFW ignoring rule order?

I have two interfaces, one is eth0 and the other is a VPN over tun0. user@server:~$ ifconfig eth0 inet addr:192.168.1.80 Bcast:192.168.1.255 Mask:255.255.255.0 tun0 inet addr:10.4.0.100 ...
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1answer
1k views

ubuntu server 12.04 and ufw failure on startup, and several module not found errors

I have problem enabling ufw on startup, it works fine if I do: sudo ufw enable. But after restart puf, I've to redo it. I tried: sudo /lib/ufw/ufw-init stop ; sudo /lib/ufw/ufw-init start And ...
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887 views

How to configure ufw on Ubuntu and still retain internet connection?

I am having trouble with how to configure ufw firewall for my Ubuntu 13.04 VPS server. Each time I enable the firewall, it closes all connections to the server. I need to open the following ports. I ...
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141 views

UFW blocks packets by the router, spams the log

While checking my systems logs I noticed this: Dec 30 19:45:24 Nick-Laptop kernel: [ 5324.288321] [UFW BLOCK] IN=eth0 OUT= MAC=01:00:5e:00:00:01:00:05:59:49:62:aa:08:00 SRC=192.168.2.1 DST=224.0.0.1 ...
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101 views

VPN won't connect while ufw is enabled

I use a paid VPN service which uses OpenVPN. It works great and I have been pleased with it for months now. Recently, I enabled, and began configuring, the firewall that is provided with Ubuntu ...
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2answers
322 views

UFW and firewall

So I recently installed ubuntu and I have been working with it no problem.While browsing through the security guides (specifically: https://wiki.ubuntu.com/BasicSecurity) I noticed this: "enable the ...
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117 views

my port is allowed by ufw but remains closed and connection is denied by ubuntu qbittorrent, Why?

my incoming port is allowed by ufw but remains closed and connection is denied by ubuntu qbittorrent, Why? ps: i have open DNS please help! thanks!
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320 views

Are the Gufw default profiles empty?

I've just installed gufw on my notebook. I'm trying to setup my laptop with a very secure - roadwarrior - type of configuration. So the choices available in GUFW with a public, home and office profile ...
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1answer
579 views

Forward port to LXC guest using UFW

I am trying to forward port 2222 on my host 192.168.2.252 to a LXC guest on 10.0.3.11. How do I do it using the UFW-framework? In other words I want to do this but with the ufw-framework. iptables ...
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63 views

why opening a port is so difficult in ubuntu?

I have searched around and I have run these commands iptables -A INPUT -p tcp -d 0/0 -s 0/0 --dport 5432 -j ACCEPT iptables-save > /etc/iptables.rules And I rebooted the box. I had no luck. ...
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146 views

ufw before.rules file blank, does this impact setting up VPN server?

Hi all please assit i am trying to setup open-vpn following this link and currently having some issues. Easiest way to setup Ubuntu as a VPN server step 10 were I have to edit the ufw 10: This step ...
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1answer
2k views

Ban IP by country in UFW

I want to block a country in my server, but I don't know which rule I must use in UFW (or iptables). For example, people from US and other countries can see the site, but visitors from Russia can't. ...
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692 views

UFW, allow from wlan to eth

I would like to use my ubuntu 12.04 notebook as a wifi hotsport to my smatphone. Everything is going ok, using dnsmasq and hostapd and allowing ports 68 and 53 on UFW. But to access the web the UFW ...
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2answers
157 views

What documentation and help resources are available for setting and examining UFW rules? [closed]

The guy who wrote ufw is too smart for me. Is there any documentation for any of the python code? Some things I'm trying to do are: Allow/close ports by number Get the currently set rules Remove ...
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1answer
1k views

Connecting to NAT virtualbox guest from bridged network

I've setup a Virtualbox Ubuntu 12.04 server using Vagrant. I can ssh to it and even ping my desktop from it. What doesn't work is to ping the guest OS from my desktop. I've tried to flush the ...
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1answer
133 views

UFW python documentation

I'm trying to access ufw with python, but on line 53 of backend.py, they raise a weird error that makes no sense: Traceback (most recent call last): File "mymodule.py", line 1467, in ...
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128 views

How does ufw handle conflicting rules?

I recently had the following conflicting rules on ufw 445/tcp ALLOW 192.168.1.0/24 445 DENY anywhere 445 DENY anywhere IPV6 ...
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1k views

SSH connections rejected after UFW allow 22

I am trying to setup UFW on a 12.04 server. SSH works great with UFW off. Setting root@ugvps:~# ufw enable Firewall is active and enabled on system startup root@ugvps:~# ufw status Status: active ...
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110 views

Google Talk > Gufw set to Deny/Deny does BLOCK. Please help

I have my Ubuntu 12.04 Server. I installed Google Talk in it. I opened gufw, and set it to deny/deny and there are no allow rules. Now firefox wont connect to the internet which is good... But... ...
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449 views

UFW Firewall Rules, has a hole in it. Please help

Can someone please look at the below output for me. I have my UFW on deny/deny, and here are the rules. But if I leave my Ubuntu Server on, with a Windows XP VM, and let Instant Messenger run in the ...
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1answer
216 views

Problem: Ufw Enabled with Deny/Deny, however SSH Inbound still works. Please help

In order to lock down my server, i installed ubuntu with ufw. I run a VM inside the server that hosts a ssh server. I opened the server and ran UFW and set Deny to send and Deny to Recieve. Now it ...
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397 views

Litle question about ufw command

Hi guys i would like to setup a specific rule for my ufw but i have the problem. How could i type this ? from ip adress 192.168.1.203 on interface eth0 alow port 80 I have on local pc ip address ...
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79 views

GUFW for console?

I like the GUFW, but need something similar for console. I mean an interactive software without need to remember all the command line keys. Could you suggest one?
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2answers
2k views

Why is ufw logging 'BLOCK' messages regarding a port for which ufw is configured to 'ALLOW' connections?

Here's an example log message: May 25 10:36:07 myserver kernel: [7057243.392334] [UFW BLOCK] IN=eth0 OUT= MAC=00:02:55:67:82:eb:00:06:b1:3a:ef:62:08:00 SRC=69.197.128.26 DST=192.168.100.101 LEN=44 ...
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2answers
1k views

ufw firewall operation

I have always run the program UFW as my firewall in Ubuntu, and been satisifed with its performance. When I installed Ubuntu 13.04, and enabled ufw, I was not able to access the internet, and all ...
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1answer
5k views

How do I allow local subnets in ufw?

I recently got IPv6 connectivity at home and now I would like to allow connections to my home server via IPv6 from the LAN only. The trick is that the IPv6 address/prefix assigned to the server is ...
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1answer
3k views

UFW 'default deny incoming' doesn't work

I have UFW enabled, 'default deny incoming' set and no any additional rules, but I still can access all ports from other PCs. I have to manually block each port. What can be wrong?
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5k views

What could be the cause for these strange UFW block entries in my syslog?

I've recently noticed a large number of recurring UFW blocks in my syslog. This surprised me as I have no UFW rules set: $ sudo ufw status verbose Status: active Logging: on (low) Default: deny ...