Questions tagged [netstat]
analysis tool for statistics about active connections, open sockets, routing tables; in general the networking subsystem.
260 questions
0
votes
1
answer
237
views
Hundreds of strange connections in iftop
OS is Debian. I'm running nginx as a webserver. I am not running Wordpress. Logging is enabled in the http block with:
access_log /var/log/nginx/access.log;
error_log /var/log/nginx/error.log;
...
- 167
3
votes
1
answer
214
views
Show non-truncated usernames of users connected to sshd server in terminal?
On my Ubuntu server, I find it very useful that netstat -tulpn also shows the username connected to sshd (apparently, this username printing is specifically for sshd) - unfortunately, this printout is ...
- 590
0
votes
2
answers
3k
views
Where does ss command gather its data for ports etc
When trying to see port clashes within my system, many websites online recommend using /etc/services or ss -tunl to see port info
I am noticing /etc/services is providing different information to -ss ...
- 23
1
vote
0
answers
350
views
How to see all tcp ports listened on locally
I have a WSL2 instance with Ubuntu 22.04. I have installed microk8s and enabled the local registry. The local Registry in microk8s listens on node port 32000. I can access this registry in WSL on both ...
- 111
0
votes
2
answers
318
views
Why using grep for some netstat commands require sudo priv?
System:
Ubuntu 20.04.06
net-tools 2.10-alpha
grep (GNU grep) 3.4
If I run netstat without sudo I see port information and no process information. This is expected as process information requires ...
- 732
2
votes
1
answer
80
views
Old 43BSD and netstat output
On old 43BSD...
netstat -f unix
Active UNIX domain sockets
Address Type Recv-Q Send-Q Inode Conn Refs Nextref Addr
801ca38c dgram 0 0 8008b5c0 0 0 0 /dev/...
- 14.2k
1
vote
1
answer
781
views
Can you widen the columns in netstat, specifically "PID/Program name" ...?
There is an old post about line truncation in netstat (Netstat output line width limit) but my question is a bit different.
I'm using netstat (net-tools 2.10) on Debian 12. My primary use is to list ...
- 175
7
votes
2
answers
2k
views
Given a service name, get its port number?
Hi I feel like this is an obvious question but I haven't been able to get a good answer so far. Given the name of the service (which I know running on localhost) is there any networking command line ...
- 345
0
votes
0
answers
153
views
Established but hidden TCP connection
On computer 10.196.111.161, I can see the following established tcp connection:
[10.196.111.161]# netstat -natp | grep 7000
Proto Recv-Q Send-Q Local Address Foreign Address State ...
- 101
0
votes
2
answers
151
views
How netstat is able to read route tables?
For my php containers if I need to detect the ip where ide listens to. I run:
ip=$(netstat -rn | grep "^0.0.0.0 " | cut -d " " -f10)
And I get the gateway IP. But for that I need ...
- 1,311
4
votes
1
answer
1k
views
How to list the connections of the port forwarded by firewalld?
I have forwarded a port using firewalld, and everything is functioning properly. However, the 'netstat' and 'ss' commands do not display the port opened by firewalld, nor do they show the connections. ...
- 43
1
vote
1
answer
255
views
netstat output: unexpected kind 634 which 0x27
When running the netstat -tuln command on macOS terminal I get a strange output at the bottom:
... truncated...
e85ca8f83c2f500b dgram 0 0 0 e85ca8f83c2f3fa3 0 ...
- 213
1
vote
1
answer
110
views
Linux Webserver not "Accepting" Connections
First off, thanks for any help anyone can provide, I greatly appreciate it!
I have a basic network I have set up for testing. It has pfSense acting as a Gateway/DHCP/DNS host and two Linux machines ...
- 11
0
votes
0
answers
259
views
'curl' command works intermittently
I am trying to install and configure a high availability RKE2 cluster (Rancher Kubernetes Engine 2). My architecture consists of 4 VMs: one with DNS and LoadBalancer configured, another with the ...
1
vote
1
answer
1k
views
ss or ip equivalent to netstat -gn to show multicast memberships?
Is there a modern Linux tool that will show the equivalent of netstat -gn to show multicast group memberships? This old command shows output like this:
IPv6/IPv4 Group Memberships
Interface ...
- 2,732