All Questions
22
questions
0
votes
1
answer
16k
views
SSH: Port 22 Connection refused
From Ubuntu 18 lts I'm trying to establish ssh connection with my Kali Linux VirtualBox on the same computer. I've already installed openssh-client and openssh-server on both systems and I'm connected ...
- 679
2
votes
2
answers
3k
views
How can I check if a port is busy or closed?
I'm on Ubuntu 12.04 LTS and this error appeared:
ChannelException: Failed to bind to: 0.0.0.0/0.0.0.0:6702
I need help to check where the problem is.
Can I check if the port are busy or closed? If ...
- 163
0
votes
1
answer
2k
views
How to tell if I have a firewall installed on my VM
I inherited a college VM I am trying to setup to accept remote connections to its MySQL DB from my local phpMyAdmin
I am going through some SO Questions and tutorials (this/this) on setting this up ...
- 153
0
votes
1
answer
325
views
keep getting added to hosts.deny + iptables
I am confused to why this has started to happen. On my local network, if I click 10-20 apache/http links my server will decide to add me hosts.deny file and block me on iptables.
Its not just apache,...
- 99
0
votes
1
answer
3k
views
How to open the ports on firewall in Ubuntu? [duplicate]
I'm pretty new to Ubuntu. I just want to open the most common ports namely
FTP (port 20 TCP/UDP)
HTTP (port 80 TCP/UDP)
SMTP (port 25 TCP)
ETC
I've tried all the ways in iptables, ufw, and gufw.
In ...
- 109
1
vote
0
answers
309
views
Ubuntu Randomly Rejecting Hosts
currently I am facing a very strange problem: my Ubuntu is randomly resetting connections and I have no clue why.
/etc/hosts.deny is empty (resp. just the default file with comments only, that comes ...
- 11
0
votes
0
answers
75
views
Port won't open! [duplicate]
I have a server that want to allow connections into it through port 25565, but when I test on http://www.yougetsignal.com/tools/open-ports/ it says they are closed?
I have no outfacing interface ...
- 815
3
votes
0
answers
1k
views
UFW is DENY/DENY, but PACKETS are still getting out of my ethernet device. Why is this?
Hello,
I have a question. I would like to use the UFW Ubuntu Firewall to lock both Input and Output completely from the server to ensure no packets are sent initially as a baseline.
I enabled UFW, ...
- 785
0
votes
1
answer
1k
views
UFW locks me out of server everytime I run it
Background: I'm setting up a new 12.04 instance on a VPS with a new provider.The VPS provider only offers a 32bit image but that really shouldn't matter here. I have no local access to the machine and ...
- 141
0
votes
2
answers
145
views
Can removing GUFW create dangers for my system? [duplicate]
I learned that the firewall settings for 12.04 were by default disabled so I went to the software center and downloaded and enabled the GUFW firewall gui config.
I thought having a firewall would be a ...
- 1
8
votes
1
answer
50k
views
Where are iptables's rulesets stored on Ubuntu 12.04?
Ubuntu 12.04 LTS - iptables v1.4.12
TLDR:
Where are iptables's rulesets saved when invoking iptables-save <ruleset-name> ?
Explanation:
According to this answer basic way of saving iptables'...
- 415
3
votes
1
answer
9k
views
Apache (and other services) work on localhost, but not IP address
My Apache server is working correctly on port 80.
When I try to enable SSL on port 443, I can connect via localhost (telnet localhost 443) but not via IP address (telnet xxx.xxx.xxx.xxx 443).
To ...
- 33
3
votes
0
answers
2k
views
SSH connections rejected after UFW allow 22
I am trying to setup UFW on a 12.04 server.
SSH works great with UFW off.
Setting
root@ugvps:~# ufw enable
Firewall is active and enabled on system startup
root@ugvps:~# ufw status
Status: active
...
- 31
1
vote
1
answer
313
views
How do you install and configure TuxGuardian in Ubuntu 12.04?
Can anyone guide me on the process to install TuxGuardian in Ubuntu 12.04? Its a freeware application available at:
http://tuxguardian.sourceforge.net
2
votes
0
answers
275
views
How should I configure Ubuntu firewall?
Just discovered Gufw, and I'd like to set it up. But I haven't found any documentation telling me what I should/should not allow. I'd like to be able to use it but the only documentation on the web ...
- 165
2
votes
1
answer
1k
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 ...
- 21
3
votes
2
answers
14k
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?
- 31
4
votes
5
answers
6k
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 ...
- 143
3
votes
2
answers
316
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 (...
- 51
1
vote
1
answer
567
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 ...
- 11
12
votes
1
answer
4k
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 ...
- 223
0
votes
1
answer
659
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.
- 143