1
vote
2answers
188 views

Linux, netstat : how to display the owner of programs using ports?

I'm getting crazy with the command netstat. In the man we can read that, in the output of Active Internet Connections (TCP, UDP, raw) we should have : User : The username or the user id (UID) of ...
1
vote
0answers
34 views

Query an office gateway/router to confirm all routes?

Is it possible to send a 'query' of some sort to a gateway device in an office to see what subnets I have access to? For example, I know that I have access to multiple subnets because we have many ...
0
votes
2answers
106 views

What does *:* in lsof output stand for?

While executing the command /usr/sbin/lsof -l -i -P -n as the root user, I am getting this output. COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME ... httpd 9164 70 3u ...
5
votes
3answers
957 views

What is ::: in the Local Address of netstat output?

This is the output of netstat -tulpn that I get: tcp 0 0 127.0.0.1:2208 0.0.0.0:* LISTEN 2055/hpiod tcp 0 0 127.0.0.1:631 ...
1
vote
1answer
87 views

Where are the open ports ? Am I getting an incomplete list?

As I enter the netstat command in the terminal, I get the following list. Active Internet connections (w/o servers) Proto Recv-Q Send-Q Local Address Foreign Address State ...
0
votes
3answers
4k views

how to use netstat on a specific port in Linux

Guys i want to know if my specific port is running a server using netstat? how do i achieve that?
0
votes
1answer
25 views

checking ssh tunnel

If I have a tunnel opened with this command ssh -f root@localhost -g -L 60000:10.128.123.67:32354 -N Which call of netstat do I have to use to see whether the tunnel is open or not? I am working ...
0
votes
1answer
177 views

TCP number of connections differ from client to server

How can this be ? netstat shows x 'established' connections from the client to y 'established' connections on the server. Situation stays like this for 10 minutes, then x and y change, then another ...
0
votes
1answer
110 views

What is the difference between :::: and 0.0.0.0 from the netstat -an output?

I just want to understand the difference between :::: and 0.0.0.0. I believe both are same which let connection from outside if any processor is listening to that port. udp 0 0 ...
1
vote
1answer
1k views

Interpreting statistics from netstat -s

I'm running netstat -s on my Ubuntu box at home to get network interface statistics. There are a bunch of numbers printed out, like this: Ip: 10256 total packets received 8 with invalid ...
1
vote
0answers
1k views

why doesn't “netstat -nlp” display the pid?

I use the command nestat -nlp, but it doesn't display the pid, like this: root@***. /$ netstat -nlp | grep 4607 tcp 0 0 0.0.0.0:4607 0.0.0.0:* LISTEN ...
4
votes
1answer
649 views

Where does netstat get the process name?

I am developing a node application and there is an option to set the process title (process name). This only sets it in some tools (like ps and top), but not in htop or netstat. I found this article ...
1
vote
2answers
1k views

Count exchanged bytes per TCP connection

I need to get a table updated with the exchanged bytes (Rx and/or Tx) for each ESTABLISHED TCP connection on a linux machine (well, at least, a list of connections (port ranges), thus not actually ...
3
votes
2answers
3k views

How to interpret the output of netstat -o / netstat --timers

netstat -o includes some timer information in the output but I haven't found an explanation of the output in the Timer column anywhere. Can anybody explain this or point to an explanation? This ist ...
1
vote
1answer
839 views

What does netstat mean by “acknowledgments not containing data received”?

Netstat reports some TCP packets in the following category acknowledgments not containing data received. However, I'm not clear what this phrase means. Goggling and the netstat documentation don't ...
0
votes
2answers
406 views

Filtering UDS from output of netstat without grep

how I cat to filter out information about Unix Domain Sockets from netstat output without grep? Is there some option for command (I not found it in man of netstat). Thank you for ahead.
4
votes
2answers
172 views

How can I determine the process for what is listening on the network in linux?

When I use netstat -tup, it only shows the processes for some. There are other ports that just have a - for PID, so how would I find out what process is listening on these ports?