Uncomplicated Firewall (ufw)

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Ubuntu noob, problem with IP masquerading; “Error saving the document ufw”?

I'm a noob and I'm used to the limited version of Ubuntu offered on TAILS, never did anything really technical with it, so i'm a complete noob here. I installed Ubuntu on my laptop. I have an UFW ...
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1answer
978 views

Uncomplicated Firewall (UFW) is not blocking anything when using Docker

This is my first time setting up an Ubuntu Server (14.04 LTS) and I am having trouble configuring the firewall (UFW). I only need ssh and http, so I am doing this: sudo ufw disable sudo ufw reset ...
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274 views

“Error getting authority: Error initializing authority: Could not connect: No such file or directory” when running gufw

I am trying to run gufw to enable traffic through port 443 (for Ogar, not Skype), and gufw logs: Error getting authority: Error initializing authority: Could not connect: No such file or directory ...
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42 views

How to enable remotely access?

I'm trying to access remotely my 8080 port but when I try to check if it is opened the site ("http://www.portchecktool.com/") tells me that the port is closed. Here's my ufw status: sudo ufw status ...
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92 views

Firewall configuration behind a proxy

Web access is given via a proxy server(port 8080). What inbound and outbound rules should one set up in the firewall(via ufw)? Is deny(incoming) and deny(outgoing) with an exception of "8080, allow ...
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379 views

How to configure UFW for a basic desktop / laptop? [closed]

Reading this answer about enabling UFW, I understand that a computer without firewall can be safe in my local network, but this same safe configuration on a laptop used outside of my local network ...
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1answer
797 views

UFW - allow range of IP addresees?

I can add a rule using UFW firewall to allow a single known IP 192.168.1.32 to access my test webserver (192.168.1.48 (on a local mostly trusted network) on Ubuntu 14.04 using: sudo ufw allow proto ...
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3k views

Open port 80 on Ubuntu server

I'm just starting out in ubuntu/linux, and have some trouble opening port 80 for incoming connections. I ran the sudo ufw allow80/tcp command, and when I run sudo ufw status the result looks like ...
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1answer
141 views

Forwarding all Internet Traffic over VPN (PPTP UFW)

I've set up a VPN using the guide here but what I cannot seem to get working is forwarding all my internet traffic over the VPN. I can connect and view the other machines on my network. I am using ...
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1answer
78 views

ufw rule updates don't take effect

I decided to close some ports on my machine running Ubuntu 12.04 so I closed them via: sudo ufw deny <port num> I tried closing all ports, including port 80 to see if it would work but I'm ...
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17 views

Ubuntu UFW extending to whole network

UFW only allows the firewall to work within where it is installed. I was wondering if I made my ubuntu a wireless access point and other computer start connecting to it will UFW work for the other ...
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1answer
79 views

What's the scope of `ufw` and its implicit Deny rule with regards to my network?

Is the implicit deny of UFW only for when people are connecting to its IP address or for the whole network? I have tried telnet to the IP address and yes it gets denied but when I tried to telnet to ...
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73 views

UFW Firewall rule not working

I have an ubuntu vm which runs the UFW and a microsoft xp professional. The ip address of the ubuntu is 192.168.254.132 and so I made the xp have a static ip address of 192.168.254.131 so they will be ...
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6 views

UFW keep close after running les than 24 hrs

I have tried to start the ufw ufw enable It it started. But it will stopped again in less than 24 hrs. How to make it keep running?
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2k views

UFW & VPN : How to allow reconnection

Here are the rules of my firewall : deny outgoing deny incoming allow out from any to any on tun0 (alow just the traffic from the VPN) However, I am forced to disable ufw when I want to start my ...
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1answer
91 views

UFW blocking 169.254.0.0 (link-local / apipa) addresses?

When using iftop on my wlan0 interface, there are a few link-local addresses connecting. How and where can I filter these connections? I have very specific UFW rules blocking 169.254.0.0/16, but I ...
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49 views

Should I add fail2ban to the following security setting?

I apologize if this is not the right forum, I am new to the StackExchange communities and Linux in general and it seemed like it could belong in a few different ones. I am using a VPS running ...
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1answer
304 views

ufw port accessible locally but not remotely

I am trying to access an application on my server I have running on port 8000. From the server I can access the application via curl mydomainname.com:8000 from any other machine I just get curl: (7) ...
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1answer
211 views

How to run 'ufw' without interactive mode?

I want to run ufw Uncomplicated Firewall from python script but it usually runs in interactive mode. Example: subprocess.check_output(["ufw", "enable"]) Has the following output: 'Command may ...
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1answer
91 views

Ubuntu 12 ufw not allowing connections even if it says Anywhere?

Currently I can't seem to connect to my Ubuntu 12.04 server unless I disable my ufw or if I do a "ufw allow ip_address". When I do a "ufw status" I get the following: I deleted the allow my ...
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210 views

unable to start (Ubuntu server 14.04) iptables service it show “Unrecognized service”

Ubuntu server 14.04 iptables service start shows: Unrecognized service
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1answer
219 views

UFW blocking connection every minute at home [duplicate]

I'm using a router to connect to the internet at home. I used a long password with WPA2/AES, changed the SSID and changed the default password. But strangely, even if I disconnect the router from the ...
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330 views

Why can't I connect to my localhost port from a remote computer?

I'm using link-grammar server to convert sentences into semantic graphs. It provides an API though a port to do the above process. It's configured to works through port 9000 of localhost. I used to ...
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77 views

Problem running ufw on Ubuntu 14.04 server

ufw is supposed to be the easy firewall for Ubuntu, but I seem to still having missed something. After a fresh install on my 14.04 server, and leaving it default, the terminal will freeze after ...
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234 views

ufw on ubuntu doesn't work, how to deactivate plesk firewall?

Since I'm a totally newbie to server stuff but I needed to set up a vServer, I let install Ubuntu 14.04 AND Parallels Plesk on it. Now, I think it would have been better to install Ubuntu without ...
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1answer
154 views

No UFW logs at syslog

I'm using here the UFW as a basic protection. When I'm using the wi-fi from the college I get some UFW block (which is normal, because the firewall is ON). But strangely, I'm not getting any UFW logs ...
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495 views

Configure UFW to allow only established and related conections (on IPv4)

I want to configure ufw to deny everything except the related and established connections. On iptables I usually did : -P INPUT DROP -P FORWARD DROP -P OUTPUT ACCEPT -A INPUT -m state ...
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1answer
996 views

UFW wont delete rule

I was testing something and added a rule to my firewall to allow port 9000. in retrospect, I should have just disabled it temporarily. anyhow, I went to remove the rule and it wont let me, it says ...
2
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1answer
576 views

Why does my firewall reset upon reboot?

I host gameservers on my dedicated server and was setting up the firewall a few days ago (had to set everything up again, hard drive failed and I forgot to back-up). Everything ran fine, firewall ...
2
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1answer
344 views

UFW - How to make it easier and what are stealth ports can UFW have these? [closed]

Let me show u what I jusat wasted 2 hours doing: To Action From -- ------ ---- 22 REJECT Anywhere 23/tcp ...
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1answer
149 views

After I installed UFW ssh login very slow

I'm wondering if I made a mistake or if this is the normal case. I turned off password based ssh login and changed it to RSA key exchange. After that I changed the ssh port and then I installed UFW. I ...
2
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1answer
2k views

ERROR: problem running ufw-init

I tried setting up ufw on my remote Ubuntu 14.04 server so i installed it and allowed ssh with the command sudo ufw allow ssh after that I tried to enable ufw but I get the following error: ...
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147 views

Firewall Config to get access to ports via eth0

My headless ubuntu Server has an OpenVPN client that connects to a gateway provided by PIA. I gathered some settings provided here to basically setup kill switch I have a domain that redirects to ...
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179 views

SSH UFW: ERROR: Could not find a profile matching 'ssh'

I am installing a new server. I am using ssh to connect but when I try to install ufw and allowing ssh: sudo ufw allow ssh I get ERROR: Could not find a profile matching `ssh` It is kind of ...
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1answer
336 views

How can I allow ap-hotspot in ufw Ubuntu 14.04?

When ufw is enable android stuck in obtaining ip address and cannot connect to wifi. I try sudo ufw allow dhclient and sudo ufw allow dnsmasq bot both had ERROR: Could not find a profile matching ...
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48 views

I don't have a port allowed in UFW but still able to access server CP at it

Default of firewall (UFW) is to deny all that isn't allowed well 8083 isn't allowed but i'm still able to access the control panel with https://serverip:8083 Status: active To ...
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1answer
978 views

Configuring NAT with ufw instead iptables

I want to apply this iptables rule: iptables -t nat -A PREROUTING -d 87.13.180.182 -j DNAT --to-destination 192.168.0.13 (87blabla is my public ip and 192blabla is my private ip). People ...
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73 views

Is this ufw configuration correct?

I have to link my openstack private cloud on a cloud management platform online. The cloud location is on my private ip (192.168.0.9) , i can't use that ip since the platform need a public ip so i ...
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1answer
94 views

How do I use Juju local with a firewall?

While using ufw (Uncomplicated FireWall) and I noticed that the local juju machines were stuck in a pending state. $ juju status environment: local machines: "0": agent-state: started ...
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1answer
138 views

ubuntu server 14.04 port 21 keeps closing

I have got a problem with port 21, which keep closing. I am using proftp and ufw and set port 21 to internal network only. This works fine, however, after a few hours or days (not sure on time ...
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1answer
66 views

Ubuntu server drop ping for specified interface

I am searching for a possibility to drop the ping packets for my ppp0 interface, but allow them for eth0. I use ufw know that i can reject ping by changing lines in /etc/ufw/before.rules But thats ...
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1answer
2k views

UFW not enabled at startup

I have enabled the UFW in terminal using "sudo ufw enable" ... But, UFW does not appear to start when the computer starts. After the computer starts, I check the status of the UFW using "sudo ufw ...
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1answer
1k views

UFW Ctrl-C and iptables: Chain already exists

I did a dumb thing, so bear with me. While running a ufw command to add a rule, I did a Ctrl-C, this led to the problem of the following error being generated every time I try to use UFW: ERROR: ...
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1answer
10k views

UFW is blocking all even when I set rules to allow

I am using an ubuntu server, Now I am trying to enable the firewall using these commands: ufw default deny incoming ufw default allow outgoing ufw allow ssh ufw allow www ufw allow https ufw enable ...
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60 views

What is UFW's approach towards rules order for overlapping rules?

I need to enable UFW in my Ubuntu 14.04 Server having these conditions: - I want to deny all incoming and outgoing on all ports (and protocols) but: - I want to allow all incoming and outgoing on a ...
2
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2answers
714 views

How to check if ufw is running programmatically

In most services (e.g. privoxy) there is a clean way to get the service status: ps -C [servicename] Then by checking the exit code ($?): 0: the service was running 1: not running This is not the case ...
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1answer
784 views

UFW blocks traffic in NAT

I've created a VM guest with libvirt with the default NAT Bridge. (Host and Guest Ubuntu 14.04 Server) After creating allow rules for SSH and enabling ufw - on the guest - i can't connect to the ...
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1answer
2k views

How to open ports 25, 80, 443, 3306 on Ubuntu 10.04

Fresh install of Ubuntu Server LTS 10.04 on a Rackspace next gen (Performance) server needs the following ports open: 25/tcp, 80/tcp, 443/tcp, 3306/tcp. I used nmap to check for open ports, here is ...
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1answer
3k views

using ufw to block outgoing traffic to website

I want to block traffic to a specific domain e.g. mysite.com. I tried blocking the ip address of the site but it does not work: ufw deny from 0.0.0.0 to ip_address_of_site I am still able to acess ...
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1answer
746 views

How do I remove all the ufw chains from iptables?

I've removed ufw and I want to get rid of all the chains it leaves behind. How can I do that easily?