Uncomplicated Firewall (ufw)

learn more… | top users | synonyms

1
vote
1answer
31 views

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

Let me show u what I jusat wasted 2 hours doing: To Action From -- ------ ---- 22 REJECT Anywhere 23/tcp ...
0
votes
0answers
17 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
votes
1answer
72 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: ...
0
votes
0answers
30 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 ...
0
votes
0answers
21 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 ...
0
votes
1answer
49 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 ...
0
votes
0answers
19 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 ...
1
vote
1answer
41 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 ...
0
votes
0answers
67 views

NFS+ufw+Autofs not working

Setup: Client server running Ubuntu 14.04 connecting to another Ubuntu Server 14.04 on NFSv4 on a local LAN. I have the firewall turned on, with routing rules to allow 192.168.42.0/24 (from/to any). ...
0
votes
0answers
31 views

KVM client only has internet with ufw disabled

I have just installed a client OS (Windows 7) using libvirt and everything is fine. I have bridged an interface (br0) for my guest OS and I can ping my entire local network but I don't have internet ...
1
vote
0answers
38 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 ...
0
votes
0answers
28 views

Allowing Longview in UFW firewall; how do these iptable rules translate to UFW-commands?

Linode has some documentation on allowing its product "longview" to go through the firewall. It offers two commands for iptables: iptables -I INPUT -s longview.linode.com -j ACCEPT iptables -I OUTPUT ...
1
vote
1answer
20 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 ...
0
votes
0answers
33 views

Do I need to create a firewall rule after installing Android Studio?

Since I installed Android Studio, I have a new network device: virbr0. My system log files keep telling me ufw rejected an incomming connection (one time per minute) wich is kind of annoying because ...
0
votes
1answer
72 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 ...
0
votes
1answer
29 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 ...
0
votes
2answers
89 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 ...
1
vote
1answer
314 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: ...
0
votes
0answers
20 views

Using ufw as a firewall between network segments

I've been using Ubuntu server 12.04 as a router and it worked. Now I'm trying to add some security using ufw. I enabled the ipv4-forwarding feature in the configuration file and added a rule ...
1
vote
1answer
879 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 ...
1
vote
0answers
31 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 ...
1
vote
2answers
166 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 ...
0
votes
1answer
242 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 ...
0
votes
1answer
494 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 ...
1
vote
1answer
418 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 ...
0
votes
1answer
103 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?
0
votes
0answers
34 views

Writing exceptions in ufw to the default forwarding policy

I've tried setting DEFAULT_FORWARD_POLICY in /etc/default/ufw to both REJECT and ACCEPT and then writing rules to create exceptions to the default forward policy. No matter what I do, it appears to ...
0
votes
1answer
160 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 ...
1
vote
0answers
1k 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 ...
3
votes
1answer
227 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), ...
0
votes
0answers
51 views

Multiple rate limits in ufw

I have set two rate limits in ufw: In summary: limit http to 120 requests in 60 seconds; and 600 requests in 600 seconds -A ufw-user-input -p tcp --dport 80 -m state --state NEW -m recent --set -A ...
1
vote
1answer
270 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 ...
0
votes
0answers
22 views

How to configure ufw to allow ruby gem installs on 12.04?

I have the following setup: To Action From -- ------ ---- 10022 ALLOW IN Anywhere 80 ALLOW IN ...
0
votes
0answers
103 views

UFW behind a router blocks traffic from the outside world

I'm seeing [UFW BLOCK] entries in my logs, where SRC=173.194.67.16 DST=192.168.1.2. My box is behind a router, DST is my internal IP, SRC seems to some Google server and I don't understand how is it ...
1
vote
0answers
53 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: ...
0
votes
1answer
145 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 ...
1
vote
0answers
34 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 ...
0
votes
1answer
175 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 ...
0
votes
0answers
24 views

iptables debugging on ubuntu 12.04

ufw was blocking the incoming ssh connection. So removed and purged the ufw still the incoming ssh connection is blocked. But there is not logs in dmesg output. I am sure sshd is running, tested ...
0
votes
0answers
140 views

Ubuntu Server and ufw as a router - defining IP addresses that can be routed

I built following network with Ubuntu Server: Internet ---- eth0 (DHCP, NAT) -- Ubuntu1 -- (eth1 10.1.0.1/16) ------> <------ (eth0 10.1.0.2/16) -- Ubuntu2 -- (eth1 10.2.0.1/16) ------ ... ...
0
votes
2answers
520 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. ...
0
votes
1answer
86 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 ...
0
votes
1answer
24 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 ...
1
vote
0answers
206 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 ...
0
votes
1answer
227 views

ufw throws “bad port”

On Ubuntu Server, I try to open port 5432 for postgresql: $ sudo ufw allow 5432/TCP ERROR: Bad port Postgresql is not currently running and netstat shows no processes currently using that port. ...
0
votes
1answer
110 views

Iptables Issue can't SSH Remote Machines

I want to SSH to 192.168.1.15 Server from my machine, my ip was 192.168.1.99 Source Destination was UP, with IP 192.168.1.15. This is LAN Network there are 30 Machine's Connected to the network and ...
0
votes
0answers
151 views

iptables rules keep showing up

I just installed an ubuntu precise server, after a few weird communications issues I checked the iptables list and found: Chain INPUT (policy DROP) target prot opt source ...
2
votes
3answers
1k views

14.04 missing “/etc/init.d/ufw”? my firewall never auto starts

I need to know how to fix the missing "/etc/init.d/ufw" file, is it some package or some command? I used the gufw to enable it, but on reboot my firewall was still off... I created a symlink ...
0
votes
0answers
222 views

How to reset/flush remove ufw rules in recovery mode in ubuntu 12.04

Hello I think I have mistakenly locked myself from a remote server (ssh). I had a way to restart in recovery mode but it seems ufw is not even installed when in recovery mode. should I follow ...
0
votes
0answers
81 views

Ubuntu 13.10 allows connections from LAN but not from outside LAN

SSH ports configured to all 22 and another one. I can connect from another Linux/Windows workstations on my home LAN no problem. Same thing for nomachines nx server. Teamviewer connects with no ...