a technological barrier designed to prevent unauthorized or unwanted communications between computer networks or hosts
2
votes
1answer
187 views
Which port does Ubuntu Software Center use?
I have installed the gufw firewall utility and want to make a whitelist of ports (want maximum security, but whitelisting single IPs is currently too tedious). I have so far only entered ports 53 (for ...
1
vote
1answer
153 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 ...
1
vote
0answers
32 views
How to load firewall before network?
How can I ensure iptables gets up before any network adapter gets up?
And can network be stopped to be brought up if there is an error in the firewall rules?
For exiting and future network adapters. ...
1
vote
1answer
144 views
ubuntu server: can't access apache hosted pages after changing ip
I moved my server to a different office. Since they wanted to access it, I joined their network by changing my server's IP. The server hosts LAMP + postgres.
Now I can't get the basic web apps to ...
1
vote
3answers
279 views
issues in installation of mongo DB
I was installing mongo DB on my Ubuntu-12.04 system, but while i give the following command in my terminal
apt-key adv --keyserver keyserver.ubuntu.com --recv 7F0CEB10
It gives me the following ...
0
votes
1answer
134 views
How to connect to a machine behind a firewall using VNC?
I am trying to connect to my computer in laboratory from home. I have installed Remmina on my laptop home and X11VNC server on the computer in the lab. When I have the laptop in the laboratory I can ...
0
votes
0answers
56 views
Firestarter is not working!
I'm new on Ubuntu and running v12.04 with MS Windows 7 on same machine. I've installed Firestarter and it is not working. Installation is fine, but it blocking all access to internet. I've configured ...
3
votes
2answers
117 views
Hourly events in the firewall-log, originating from Ubuntu12.04-box. How to find the reason? [duplicate]
Possible Duplicate:
How do I disable Online Videos in the Unity Dash?
every hour, the logfile on our firewall (IPCop 1.4.20, 192.168.1.8) lists nine lines, apparently caused by my Computer ...
0
votes
0answers
151 views
isc-dhcp not starting
I am currently trying to build a dhcp and firewall server for my home.
I followed the instructions posted on the Ubuntu Forums about setting up such a server.
As far as I can tell, I don't have any ...
1
vote
1answer
79 views
User to access only to specific IP addresses
How can I setup Ubuntu box so logged user can access only to several IP addresses, on all protocols?
Additional problem is that Ubuntu uses proxy to acceess to internet.
Tried with UFW, but did not ...
1
vote
0answers
170 views
How to change Port 27000 from filtered to open status
In my ubuntu box I am running flexlm licensing software on port 27000 and I am able to pull the license from the this port to run the simulation software locally.
I am also trying to run the same ...
0
votes
1answer
373 views
Symfony2 - Apache vhost for app_dev different port
As I'm using url rewriting to access my Symfony2 application, it is directly available from
http://my_application.my_domain.net
Now I'd like to be able to access the dev environment simply using a ...
2
votes
1answer
224 views
How to pass traffic from static ip on my router through Ubuntu firewall to LAN ip
I have a router that has 5 static ip addresses set on it. These external static IP's are mapped to internal IP's on our LAN. We currently have no firewall or proxy set up, so I cannot monitor user ...
1
vote
0answers
59 views
ssh client times out to some servers, works on others
I have a strange problem and I'm not sure where to begin. My ssh client works on some servers but times out on others.
Obviously, I checked that the servers are accessible via ssh from other ...
0
votes
0answers
639 views
UFW port forwarding
I use UFW and here is my setup:
eth0 is configured as a bridge interface (br0):
inet adr:10.0.4.10 Bcast:10.0.4.255 Mask:255.255.255.0
eth2 is connected to a private network:
inet ...
2
votes
0answers
94 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 ...
0
votes
1answer
236 views
How to allow remote connections to Flask?
Inside the system, running on virtual machine, I can access the running server at 127.0.0.1:5000.
Although the 'remote' address of the vm is 192.168.56.101 (ping and ssh work fine), I cannot access ...
1
vote
0answers
185 views
Firewall stopped and disabled on system startup ERROR: problem running ufw-init
I am trying to set a VPN server on my PC (Ubuntu). I am following a tutorial , http://cviorel.easyblog.ro/2009/02/09/how-to-set-up-a-vpn-server-on-ubuntu/.
I made changes in various files including ...
2
votes
1answer
320 views
Writing a simple firewall with iptables
I'm learning how to use iptables and I'm writing a very simple firewall on Ubuntu.
Using just the filter table, I added the following rules
iptables -P INPUT DROP
iptables -P OUTPUT DROP
iptables -P ...
0
votes
0answers
116 views
ufw firewall port deny access
I installed red5(version 0_9_1) on my Ubuntu 12.04 server and I use ufw firewall.
I want just an ip address to connect to port 5080 and protocol rtmp to see my flv movie.
for test I have allowed IP1 ...
1
vote
1answer
233 views
ufw configuration nat ppp0
please some tips how i can allow this request in ufw:
[UFW BLOCK] IN=ppp0 OUT=eth0 MAC= SRC=10.11.22.2 DST=8.8.4.4 LEN=71 TOS=0x00 PREC=0x00 TTL=127 ID=52 PROTO=UDP SPT=59405 DPT=53 LEN=51
i tried ...
1
vote
0answers
178 views
How to find out what is blocking a port
I have 3 machines:
Machine A - local network
Machine B - local network
Machine C - external network
Local network has a dynamic IP and Dyndns is set up to forward it.
I have ssh on Machine B ...
1
vote
0answers
167 views
Ubuntu all versions from 10.04 till 12.10 [closed]
Is simply enabling the firewall ufw (sudo ufw enable) sufficient enough for protection of the OS ? I mean should extra rules be added for 'better' protection, or is simply enabling the firewall enough ...
8
votes
1answer
269 views
Replacing my firewall rules
I've had an init script for many years that configures iptables for me and it has worked like a champ until now. After upgrading from 10.04 to 12.04 I started having firewall problems where the ...
0
votes
0answers
12 views
Do I need to do something to have my newly installed Ubuntu protected by a firewall? [duplicate]
Possible Duplicate:
Is there a preinstalled or automatic firewall?
I had Ubuntu 11.10 for about 6mo and hardly used it. I just upgraded to Ubuntu 1204 and at the same time, as I was doing ...
2
votes
2answers
126 views
List firewalls on the local machine
In Windows besides the Windows firewall a user could have installed a firewall program, or there is another service listening to that port.
In Ubuntu how can I see what blocks/filters open ports? ...
2
votes
1answer
1k views
Firewall settings for Dropbox LAN sync
I have two Ubuntu 12.04 computers on a wireless home network, kept in sync using Dropbox. I use Dropbox rather than Ubuntu One because of its LAN sync feature - preferable to doing everything via the ...
1
vote
2answers
138 views
How do I get my VPN to work even when my firewall is active?
I have subscribed to a VPN service, but it seems that it does not work whenever my firewall is active.
I have up until now used Firestarter to configure my firewall, but it has no options for ...
0
votes
1answer
824 views
What GUI firewall manager should I use to replace Firestarter?
Apparently Firestarter is no longer maintained, and it does not have any options in its interface for handling the connection to a VPN. Right now, my VPN does not work if my Firewall is activated.
I ...
0
votes
1answer
693 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 ...
-1
votes
1answer
516 views
Firewall settings for VLC (streaming)
I'm watching online TV with VLC and http://mafreebox.freebox.fr/freeboxtv/playlist.m3u.
Does anybody know which ports and protocol must be enabled in my firewall settings? I've been searching on the ...
0
votes
0answers
351 views
Internet sharing and file sharing on eth1 for wired users and wlan0 for wireless users through squid, dansguardian & Hostapd
I have 3 network cards installed in my Ubuntu 10.04 server and I want to configure Internet sharing and file sharing on eth1 for wired users and wlan0 for wireless users through squid and ...
3
votes
1answer
467 views
How to set up Wi-Fi Hotspot for sharing using 2 wired and 1 Wi-Fi network cards?
I have 3 network cards installed in my ubuntu 10.04 server and I want to configure Internet sharing and file sharing on eth1 for wired users and wlan0 for wireless users.
Static ip:
eth0: 192.168.1.1
...
0
votes
0answers
97 views
iptables block certain lengths
I'd like to start off saying I am a beginner with iptables. I seem to be having issues with my iptables.
I'd like to block incoming packets greater than 150 bytes. I have a copy of an exploit that ...
1
vote
1answer
242 views
Firestarter preventing Firefox accessing internet
I have recently had an issue with Firestarter preventing Firefox accessing the Internet. I have used Firestarter in the past with Hardy Heron and recently switched to Precise Pangolin.
The policy ...
0
votes
0answers
290 views
no ipv6 connectivity with Hurricane Electric tunnel; firewall issue?
I am trying to set up an ipv6 tunnel through Hurricane Electric. So far, I have no connectivity;
ifconfig:
he-ipv6 Link encap:IPv6-in-IPv4
inet6 addr: fe80::c0a8:164/128 Scope:Link
...
0
votes
0answers
155 views
cannot login to apache JAMES Remote Administration Tool
Is there some reason I get denied when trying:
# telnet localhost 4555
JAMES Remote Administration Tool 2.2.0
Please enter your login and password
Login id:
root
Password:
root
Welcome root. HELP ...
0
votes
1answer
353 views
Best & The Most Secure UFW Configurations? [closed]
I've looked in these two (1 & 2) Qs&As but didn't find an accurate and simple answer...
I'm on a variant of Ubuntu 10.04 and I want to configure my firewall in a way that it couldn't be ...
3
votes
1answer
644 views
Do I need to activate the firewall? I only use Ubuntu for a home desktop use?
I am a novice at Ubuntu (12.04). I have it on my netbook which I use mainly for surfing the net, learning python and remote desktop into my work computer.
Do I need to enable a Firewall type ...
2
votes
1answer
266 views
Linux Firewall NAT Port Forwarding Issues
At my home I have a Linux server (it's only job is NAT, DHCP, and DNS) with Ubuntu 10.10 Server 64-bit.
I have webmin installed on the server too, but I do know my way around a command line quite ...
1
vote
1answer
195 views
How do I set up user level restrictions on a gateway?
I am aware that Ubuntu Server can be used as a gateway to allow Internet connection to a LAN.
Then we use IP tables or other firewall settings to restrict (for example), certain websites from being ...
0
votes
1answer
556 views
How do I find my firewall is blocking mysql?
I'm very new to Ubuntu. I couldn't able to connect to mysql via my programming language.
I know all my property file in my code is correct. But still I couldn't able to connect to mysql. I guess my ...
0
votes
0answers
100 views
APF Firewall makes SSH hang sometimes
I noticed that when apf-firewall is turned on, then my ssh sessions are somethings hanging or closing.
It happens when:
I leave the ssh console alone for some time - Then the connection closes
I ...
0
votes
1answer
435 views
Firestarter exits after closing
I'm using Firestarter on Ubuntu 12.04.
I configured Firestarter to run even after closing in the preferences menu.
But still it exits after closing.
It doesn't minimize to system tray.
2
votes
1answer
179 views
How can I prevent applications sending data over the net without my consent?
Recently I had a couple of instances of programs sending data (copies of some of my config files) out over the net. I consider this very bad form on behalf of the writers, and I want to prevent it ...
1
vote
2answers
281 views
Need a Firewall application similar to one that ships with Fedora
I've used Ubuntu since more than a year now, as the Oneiric Ocelot has more than exceeded my expectations and provides most things out of the box. However, there is one feature that both Windows and ...
0
votes
3answers
78 views
APT downloading without my consent
I installed natty (11.04) and wanted to play a video.
Went through the process the cancelled because it was slow and files were relatively large unstable and it was late .(Internet very expensive for ...
2
votes
1answer
292 views
How do I block a protocol using iptables firewall
How to block a specific protocol using iptables firewall? For example block Yahoo messenger?
1
vote
1answer
5k 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 ...
4
votes
2answers
278 views
What additional security measures should I apply for Ubuntu?
So on my Windows 7 install, I've got multiple free malware/virus scanners and a firewall up. But I've heard that Ubuntu (or Linux in general) is much more secure by default.
So what additional ...
