Uncomplicated Firewall (ufw)

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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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145 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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1answer
641 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
3k 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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3answers
11k 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
252 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
170 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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1answer
104 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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1answer
109 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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1answer
3k 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
143 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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404 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
682 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
149 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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1answer
305 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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0answers
436 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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1answer
169 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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1answer
777 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
2k 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 ...
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1answer
810 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 ...
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1answer
533 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
195 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 ...
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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: ERROR:...
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1answer
455 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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1answer
2k 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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83 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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2answers
132 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 agent-...
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1answer
168 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 limit),...
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1answer
86 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
3k 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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2answers
2k 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
14k 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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79 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 ...
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2answers
1k 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
953 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
4k 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
1k 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?
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1answer
527 views

Setup NAT on Ubuntu 14.04

I'm trying to insert my desktop between an appliance and the rest of the network to monitor the traffic coming off of it due to some security concerns. I'd like to setup NAT so that the devices behind ...
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1answer
5k views

UFW for OpenVPN

I want to configure ufw (uncomplicated firewall) for OpenVPN. Connections are only allowed through OpenVPN. Everything else should be blocked. So if OpenVPN is disconnected -> no internet! I found ...
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1answer
1k views

ufw not blocking traffic

I have an apache2.4 webserver, and I am trying to block a malicious subnet using ufw. Here is the UFW setup: $ sudo ufw status verbose Status: active Logging: on (low) Default: deny (incoming), ...
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1answer
2k views

Whitelist IPs for ufw

I have set some rules in ufw to rate limit connections, as such: -A ufw-user-input -p tcp --dport 25 -m state --state NEW -m recent --set -A ufw-user-input -p tcp --dport 25 -m state --state NEW -m ...
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176 views

problem with UFW

Following this tutorial I executed the following commands: sudo apt-get install ufw sudo ufw allow ssh sudo ufw allow http sudo ufw enable sudo ufw status verbose and I get: Status: ...
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1answer
586 views

network bridge not forwarding traffic from span port on router

I want to run several security network tools in LXC containers like ntopng, suricata, snort, etc. I hooked one of my server's NIC's up to a port that is spanned to my firewall... so basically this ...
2
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0answers
56 views

ufw - How can I open up a port to a range of ip's (UB 14.04)

i wonder if you can help me. I want to open up a specific range of ips to port 22, e.g from 32.46.23.113 to 32.46.23.126, how would I do this with UFW? I've had a look at subnet masking and have seen ...
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1answer
375 views

Processes in docker cannot connect with ufw enabled

I'm trying to setup a server to use ufw with docker (via dokku.) When ufw is enabled, I cannot open connections from one container to another. When it's disabled, I can connect fine. As an example, I ...
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3answers
4k views

The program 'iptables' is currently not installed

I am a newbie, so my apologies up front. I am trying to get DansGuardian installed (which I believe I have) and working. To get it working I need to filter IP traffic through the app via iptables. ...
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1answer
134 views

ICMP requests are blocked

I connected a Kubuntu 14.04 machine to a Debian 7.0 with a cross cable. The problem: ping is one-directional. Kubuntu machine can see Debian, but Debian can't ping Kubuntu. Notes: Firewall is ...
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1answer
42 views

before.rules date [closed]

I can't figure out why one of my before rules file has a date that is in the future. Today's date is July 3rd but the file time stamp states Jul 6. Below is the output from ls -l in the /etc/ufw ...
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565 views

Why aren't these ufw rules working?

I'm trying to configure ufw to only allow connections to 3 ip addresses on my local network, and deny everything else. Here's the commands I'm using: yes | sudo ufw reset sudo ufw default deny sudo ...