could you add this feature or discuss it at 13.04 Developer Summit?
bni1984 at live.com
Mon Oct 15 18:08:59 UTC 2012
Yeah, I have been exposed to these programs by friends more knowledgable than me. They do show the connections but I find this inadequate because they don't log it. If some application or service connects and then disconnects, I'll only learn of it if I happen to be watching at that time. Lots of things can connect and disconnect when I'm not watching.
Plus if I block outbound connections using the ubuntu-firewall and an application or service wants to use an unorthodox port for something I'll only learn of this if I happen to be watching the terminal at that time. There are times I may want to open that port to allow the connection. other times I may want to keep the port closed. But I have no way of knowing unless I happen to be watching the terminal at the time of it happening.
I do feel the current options are inadequate, so I was hoping this might get discussed at the Summit. Thank you for telling me about these applications though. I enjoy learning all these new things in ubuntu.
Date: Mon, 15 Oct 2012 07:37:08 -1000
From: paul at paulgraydon.co.uk
To: ubuntu-devel-discuss at lists.ubuntu.com
Subject: Re: could you add this feature or discuss it at 13.04 Developer Summit?
In what kind of context are you looking for this information? Do
you have an example tool or screenshot you can provide?
It's relatively straight forward to find out what is currently
listening to ports, there are two utilities that have been around
a while, netstat and ss. You're better off using the latter as
netstat is reaching obsolescent, but you may occasionally find
yourself stumbling across boxes without ss.
To get a list of both active connections and listening services,
try "ss -plan". You'll get lines like the following back (IP
addresses changed for security reasons):
LISTEN 0 50
*:3306 *:* users:(("mysqld",1384,13))
ESTAB 0 0 192.168.0.2:55366
The first line, LISTEN, tells you the machine I ran the command on
is listening for connections on port 3306, which happens to be the
port MySQL server uses. The final column gives you the name of
the program that is related to that connection, which in this case
confirms it's mysqld.
The second line ESTAB tells you there is an established connection
from the machine 192.168.0.2 (local address on the machine) to a
remote server on 192.168.0.3, port 143 (IMAP). The final column
tells you it's thunderbird running on the machine. By the way, if
you're looking to quickly translate ports to services, check
/etc/services. It's not an exhaustive list but most of the
standard ones are in there:
grep 3306 /etc/services
Hope this helps in some way,
On 10/15/2012 07:25 AM, Brian labishi wrote:
Hi. I'm new to Ubuntu and like it very much. Overall I like
Ubuntu better than what I used to use, Windows. But one thing
that I really miss from Windows is the ability to know what
applications and services are connecting to the internet. In
Windows I could log this kind of information. But I've asked
some very knowledgeable computer people for help with Ubuntu
and I'm told this can't be done on ubuntu.
I was hoping that Ubuntu developers might address this
shortcoming at the summit? I was told this is where these
kind of things are discussed.
I'd like to be able to log what applications & services
are connecting to the internet when I use Ubuntu. This is
the feature I would like to have in ubuntu. Much Thanks.
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