a technological barrier designed to prevent unauthorized or unwanted communications between computer networks or hosts

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24 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
126 views

Adobe on Ubuntu 14.10

I want to install Adobe Master Collection CS6 on Ubuntu. I've installed Wine. ( the newest version. What I have allready done: sudo add-apt-repository ppa:ubuntu-wine/ppa sudo apt-get update sudo ...
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17 views

GUI Firewall status display

I'm looking for a panel item or screenlet or something to display the status of my firewall. /usr/bin/firewall-applet appears to be the right thing and it is already in "Startup Applications" ...but I ...
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0answers
19 views

iptables: write UDPv4: Operation not permitted (code=1)

I am trying to set up a stateful firewall using iptables. It is for use on my desktop machine. Below are the contents of my firewall script: #!/bin/bash iptables-save > ...
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3answers
12k views

How to block internet access for wine applications?

How can one prevent specific or any wine applications from accessing the internet? When using certain applications under Windows, they were trying to access the internet from time to time without ...
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2answers
360 views

I think my PC is being hacked. What should I do? [on hold]

I'm afraid I'm being hacked: My Ubuntu is receiving inbound traffic while my PC is disconnected from Ethernet and WIFI, so my question is, how am I receiving inbound traffic? I even have a firewall ...
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1answer
20 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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0answers
12 views

Ubuntu as a bandwidth throttling box on windows network

I need to test the performance of some applications over different capacity connections (broadband, EFM, LAN extension etc). How would i configure an Ubuntu server to sit between the main network ...
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4answers
3k views

How to deny an ip address from connecting to my system?

Is there a way to deny an IP address from connecting to my Pc? Is there a way to deny an Ip from connecting to specific Port?
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3answers
2k views

How to disable Internet connection for a single process?

I know the PID of a specific process and I want to disable the Internet access for this process and only for this process, so other process can access Internet. Is there any way to do it? I ...
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0answers
20 views

Transparent proxy listening on sub-interfaces

I have iptables and squid on the same box. HTTP traffic doesn't seem to be going through the transparent proxy when I change my rules on the filter table. What is the best point to filter http ...
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1answer
4k views

Port listening on localhost:8000 but not on ip:8000

Hello I'm running a web application on port 8000. When I access it from the host server localhost:8000 it responds ok, 127.0.0.1:8000 also works, but 192.168.1.7:8000 does not work. 192.168.1.7 is the ...
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11 views

OpenVPN disables DNS due to firewall

I'm trying to use an OpenVPN service with Network Manager. When I'm on wireless and activate the VPN, it works flawlessly, but when I'm on a wired connection, I have no Internet access. Through trial ...
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2answers
1k views

SSH tunneling over SSL

On one of my systems there is a firewall forbidding any outgoing unless http(s)... Some users have to ssh but they can't.I tried first to run ssh on port 443 but with no success. I googled it and ...
7
votes
4answers
16k 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 ...
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1answer
45 views

IP Tables allow HTTP and HTTPS

I am setting up a basic Firewall rules for my Laptop but I cant seem to get HTTP and HTTPS, thus using of the Webbrowser to work. My current rules are like this # 1. Delete all existing rules ...
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0answers
6 views

Subdomains Stopped Working after APF Firewall Install

I've just installed APF Firewall to my Ubuntu 12.04 server. Everything went fine and www.threecreative.co.uk is displaying okay, but none of my subdomains appear to be working. Any thoughts? For now, ...
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0answers
37 views

What is Network-manager trying to do with rdisc?

I have quite strict firewall setup using (g)ufw, allowing only some known to be useful outgoing traffic and denying the rest. I have noticed these recurring messages in syslog, and I'm wondering what ...
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1answer
81 views

I Had a Backdoor Mal Ware on W7. Will it Pass on to Ubuntu? [duplicate]

October 15, 2014, I got hit with a team of revenge hackers. They are working for my ex-father-in-law. He has been proxy stalking me since 2004 but since that has no effect on me anymore, he decided to ...
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1answer
1k views

I can not connect on ubutu service port 3050, from my network

I have the Firebird service running on my ubuntu server and it is working fine inside the server. But when I try to use from another machine it does not work. Like a firewall issue. I did make some ...
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1answer
478 views

Can't connect to PPTP VPN with ufw enabled on Ubuntu 14.04 with kernel 3.18

Suddenly VPN disconnected and can't reconnect no longer on kernel 3.18.1, so I try to install kernel 3.18.2 but my problem still exist. But I can connect to VPN with 3.14 kernel easily. The output of ...
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1answer
24 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
24 views

Adding firewall rule makes multiple entries

I am trying to add a rule to my Ubuntu 14 iptables to allow NTP (123) though using the command for allowing Incoming Traffic on Specific Ports Basic iptables How to? Here is my command: sudo ...
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0answers
52 views

error: Idle Subprocess didn't make a connection. Either Idle can't start a subprocess or personal firewall software is blocking the connection

When i run idle it returns the above stated error. It happened after I installed python 3.4. both 2.7 and 3.4 are giving this error.
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0answers
44 views

remote CORBA lookup (firewall, port, telnet)

I'm trying to do a CORBA lookup on a LAN from one pc to another. How do I troubleshoot the connection? On the server running glassfish: thufir@doge:~$ thufir@doge:~$ ...
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1answer
67 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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2answers
27k views

SSH connection refused when connecting remotly

I set up my Ubuntu server and it can connect to itself when running ssh localhost. However, when I run Putty on windows 8 I get a "connection refused" error. I have, to the best of my ability: ...
2
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1answer
212 views

Failed network lookup

I'm running Kubuntu 12.10. I am having three networking problems that I think might actually have a common cause, even though they are in apparently unrelated areas. I had them in 12.04 also: When ...
2
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1answer
157 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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0answers
25 views

Iptables: some ports are closed despite being open by my iptables; can it be something else?

Beginner question. I set up the following iptables rules: #!/bin/sh # Réinitialise les règles sudo iptables -t filter -F sudo iptables -t filter -X # Bloque tout le trafic sudo iptables -t ...
2
votes
2answers
3k 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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votes
2answers
121 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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39 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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5answers
9k 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 ...
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0answers
34 views

How to know the all minimum privileges that software needs?

I am using a VPS as a public proxy, and I have begun to realize that I must make my VPS more secure as I have seen in Securing Public Shadowsocks Server. Shadowsocks is a fast tunnel proxy that helps ...
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3answers
133 views

Ubuntu / Apache2: I cannot open port 443 [duplicate]

I am trying to install a SSL certificat on my Ubuntu 14 server (using apache 2). For some reason the port 443 appears to be closed I installed and enable ssl /etc/apache2/ports.conf is as ...
0
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1answer
36 views

FTP and WWW services don't acknowledge connections

I have Lubuntu 14.04 LTS with vsftpd and the lamp stack (apache2, etc.) installed. Everything works fine on the LAN. Externally, the services don't acknowledge connection attempts. I can see packets ...
15
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4answers
147k views

How do I turn off the firewall in Ubuntu 12.04?

How do I turn off the firewall in Ubuntu 12.04? Thanks for the answers. The reason for turning it off was twofold: I often cannot make a wireless connectin to internet and get the server is unable to ...
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0answers
18 views

VSFTPD setup not working

Good day I think I've been trying to tackle this issue for over 2 months now (with breaks of course) Here's the thing, I've set up the FTP server, it appears to be running (I can use Filezilla, ...
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1answer
39 views

Linux Firewall ala Outpost

Does linux (Ubuntu) have GUI firewall like Outpost. I need it to look out what apps are generate in/oun bound traffic.
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0answers
72 views

How to config PORT KNOCKING on CSF ubuntu server and access it by linux?

I'm trying to run port knocking work on a CSF on a small VPS, i setup this: 1 - the result of csf first test ok 2 - TCP_IN = "53,80" TCP_OUT = "53,80,113,443" UDP_IN = "53" UDP_OUT = "53,113,123" ...
0
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1answer
68 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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0answers
31 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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vote
2answers
28k views

Port seems to be open, but connection refused

I am trying to open port 3000 on Ubuntu 12.04, cause I have a web server listening there. I'm a bit out of my confort zone here, and spent many hours trying to solve the problem without success. Port ...
0
votes
1answer
64 views

Connection timed out on specific ports

We have an apache server running couchdb on port 5985 (not 5984). On my computer, I have Windows 7 and Ubuntu 14 LTS. From Ubuntu, I can connect to the host via http://example.server.domain, but I ...
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1answer
48 views

NFS Client Ports

So I've been trying to get my head around how an NFS client figures out which ports to use, or how to set them. I enabled logging (In iptables on the nfs client) for traffic between the nfs client ...
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1answer
62 views

loading “explicit” iptables rules on boot or interface up

I'like to load iptables rules on boot or interface going up on Ubuntu. Made a search on StackExchange and other places and looks like the most commonly agreed approach is either use ...
3
votes
1answer
6k views

How do I allow local IPv6 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 ...
0
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1answer
38 views

Ubuntu Server Firewall

First of all I am new to Ubuntu server. I am still trying to understand and learning about how does firewall. I want my firewall like if you fail 3 times it will time out. Is there any body could be ...
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2answers
1k views

How to make an internet server as firewall using ubuntu 11.10

i have one static broadband connection which is coming to my Ubuntu server with 2 lan cards, there are 10 more PC's to which i need to provide internet connection through Ubuntu server as well as i ...