a technological barrier designed to prevent unauthorized or unwanted communications between computer networks or hosts
3
votes
2answers
190 views
Error message when entering iptables command (table does not exist)
I have been trying to install Spotify, but when logging in I get a message saying I have an error 101. This appears to be related to either my proxy settings or to my firewall. Following instructions ...
0
votes
2answers
33 views
If I have Ubuntu installed along side Windows, does the firewall on Windows work along with the antivirus system?
I have Ubuntu installed on my Windows 7 computer. I was curious to know if the firewall on that one is activated (I have to turn it on each time I'm on the computer) along with the antivirus system, ...
0
votes
2answers
95 views
Forward [open] Ports 7777; 2106
Hi i am new to Ubuntu (12.10) x64
Trying to forward ports for gameserver on my pc (Lineage II)
Ports are opened in UFW
Ports are opened in my Router
Even if i disable UFW others still cant login to ...
0
votes
2answers
102 views
How to stop firewall
I am new to Ubuntu. I am developer and working with maven3. I am unable to download dependencies from this site.
When I tried in Windows it was a 404 exception but when I stopped my anti-virus it was ...
8
votes
1answer
267 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 ...
3
votes
1answer
245 views
How can I block a range of IPv6 addresses?
Are there any IP blocking applications or firewalls that support IPv6?
The ones I know about (pgld, moblock (sunset?) , nfblock, iplist (looks old)) are only for IPv4.
2
votes
1answer
30 views
How do I allow local 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 ...
2
votes
1answer
221 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 ...
2
votes
1answer
318 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 ...
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
44 views
Unable to connect through Java programs in Ubuntu
I am unable to connect to any host through Java programs, getting
java.net.ConnectException: Connection refused.
Does it have anything to do with Ubuntu firewall configurations or any other ...
1
vote
1answer
241 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 ...
1
vote
1answer
1k views
Installed Xubuntu desktop on Ubuntu 12.04 server and now can't connect via SSH
I have a ubuntu 12.04 server that I could connect to fine using ssh over the internet. I installed the xubuntu desktop on it, didn't change any settings, then suddenly ssh stopped working.
I can ...
1
vote
1answer
65 views
How to add a rule for loggin packets in ufw
I'm seeing a lot of connections with source 0.0.0.0 and destination 0.0.0.0 in conntrack. I want to log these packets which have source 0.0.0.0 and destination 0.0.0.0 so that I can digg this issue ...
0
votes
1answer
89 views
UFW 'default deny incoming' doesn't work
I have UFW enabled, 'default deny incoming' set and no any additional rules, but I still can access all ports from other PCs.
I have to manually block each port. What can be wrong?
0
votes
1answer
65 views
New User to Linux in general (Setting up a hardware firewall, needs interface config and ufw config help!)
I'm very new to this new environment (coming from Windows) and I need some help setting up a hardware firewall and web server combo. I already have my website set up and I would like some guidance on ...
2
votes
0answers
34 views
Is there a firewall that blocks a process and shows a dialog with buttons Allow, Drop, Disable?
Currently I use ufw and Firestarter, and I'm just learning how to use a firewall.
When I used windows there were a couple of firewalls that could block a process which tried to establish connection ...
2
votes
0answers
93 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
votes
0answers
203 views
Why is SSH not accessible after installing KDE on Ubuntu Server?
I installed KDE onto my Ubuntu server, which is operating as a file server.
It installed a firewall that wasn't there previously. I can't reach any of the services I had operating on the box now, ...
1
vote
0answers
117 views
Configure Firewall to Take Confirmations
I want to have a firewall program for my Ubuntu 13.04 which will ask me for confirmations when a program wants to connect to the Internet. It should have options like Allow, Block etc. So is there any ...
1
vote
0answers
90 views
How I can connect the syslog-ng with a mysql database?
Hi guys I want to use a syslog-ng server for logging data from the firewall and I get Data from the Firewall in the file /var/firewall.log but now I want that the logs go to a database. For this 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
0answers
168 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 ...
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 ...
1
vote
0answers
183 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 ...
1
vote
0answers
177 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 ...
0
votes
0answers
9 views
Wifi hotspot service on Precise without disabling ufw firewall?
I've been using 12.04 LTS for a while, and for my own sanity and security, I've configured my ufw firewall to deny all incoming, and for outgoing just allow these ports:
TCP 80, 443 for web-browsing
...
0
votes
0answers
31 views
ufw firewall operation
I have always run the program UFW as my firewall in Ubuntu, and been satisifed with its performance. When I installed Ubuntu 13.04, and enabled ufw, I was not able to access the internet, and all ...
0
votes
0answers
26 views
How can I open ports on ubuntu server?
Hello I am running my server and since the ip is not static (my ISP won't give me one because I need to be a commercial customer) I have to use a service like DynDNS but the site is only accessible in ...
0
votes
0answers
24 views
Configuring a firewall to drop idle connections after 30 seconds
I'm trying to reproduce a bug with gvfs that normally only happens after an hour or two. But I'm trying to make it happen after just 30 seconds so that I can work on a patch.
Basically I'm trying to ...
0
votes
0answers
24 views
Cannot get Samba past firewall
I have two interfaces. One (eth0, 192.168.1.x) is my network, my internet connection. I pay for my own because of bandwidth issues. The other (eth1, 192.168.0.x) is the other occupants' LAN that I ...
0
votes
0answers
27 views
Running wifi hotspot on 12.04 without stopping the ufw firewall?
I've been using 12.04 LTS for a while, and for my own sanity and security, I've configured my ufw firewall to deny all incoming, and for outgoing just allow these ports:
TCP 80, 443 for web-browsing
...
0
votes
0answers
21 views
Allow hotspot service to run on Precise without compromising the firewall?
Well, I've been using Ubuntu 12.04 LTS for a while now, and for my own sanity and security, I've configured my ufw firewall to deny all incoming, and for outgoing just allow these ports:
TCP 80, 443 ...
0
votes
0answers
40 views
gufw set to “deny incoming” and “deny outgoing” still allows me to use internet with browser, what gives?
I've been trying to setup gufw. I would have thought that if I denied outgoing and incoming I should not be able to do anything outside of my local computer... but I still can use the internet, etc. ...
0
votes
0answers
19 views
How to make Firestarter resolve hostname each time? trying to deal with connecting w/dynamic ip
I'm trying to connect to ubuntu running firestarter with a cell phone. My ip changes so i dealt with that with no-ip and the first time i connect, everything is fine. But if my ip changes, and i ...
0
votes
0answers
52 views
setup bridge firewall
I want to setup bridge on ubuntu 12.04
something like this
LAN --> ubuntu bridge -->default gateway-->Internet
do I need 2 eth interface?
can I setup using ethernet to connect to LAN and wlan to ...
0
votes
0answers
57 views
How can I turn off ufw blocking nodes
I have set up ufw on a couple of servers and allowed every connection between those servers since the need to communicate with each other without any restriction.
Now, ufw sometimes blocks connection ...
0
votes
0answers
249 views
Problems allowing outgoing multicast in ufw
I am having problems configuring the uncomplicated firewall (ufw) to allow outgoing multicast traffic. I am blocking all in and outgoing connections as the default policy. I have supplemented with the ...
0
votes
0answers
92 views
Setup of UFW (Uncomplicated Firewall) on network that contains proxy
Trying to make a proper setup for UFW (Uncomplicated Firewall). I have network that's behind proxy.
Setup I need it that some of the network computers have to be able to browse everywhere, and
some ...
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 ...
0
votes
0answers
150 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 ...
0
votes
0answers
633 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 ...
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 ...
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 ...
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 ...
0
votes
0answers
289 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
153 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
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 ...
