What is wrong with netstat?

**lynxus** · February 5th, 2013

Hi Guys,

Question...

How on earth do I view listening ports and est ports?
Netstat on ubuntu is giving completely different output than any other distro i have used?

( Cont copy and past because its via a hyperv console.. )

Anyway,
It looks like:
unix 4 [] DGRAM /dev/log

It seems to show internal connections?

How do I see a normal netstat that outputs "normally" lol?

**PowerBarry43** · February 5th, 2013

Hi

Try running

Code:

netstat -l

for all listening ports

Code:

netstat -a

for all ports.

you can also add -t or -u for only tcp or udp.

Alternatively if you just want to know which ports are open install nmap and portscan yourself.

Code:

sudo apt-get install nmap

nmap localhost

Hope this helps!

Barry

**The Cog** · February 5th, 2013

man netstat will give you the details, but:
netstat -t : shows only tcp connections
netstat -u : shows only udp connectons
netstat -l : shows only listening ports
netstat -lntua : shows all listening and connected tcp or udp ports with numeric addresses

**lynxus** · February 5th, 2013

Originally Posted by PowerBarry43

Hi

Try running

Code:

netstat -l

for all listening ports

Code:

netstat -a

for all ports.

you can also add -t or -u for only tcp or udp.

Alternatively if you just want to know which ports are open install nmap and portscan yourself.

Code:

sudo apt-get install nmap

nmap localhost

Hope this helps!

Barry

Nope doesnt work.
I just see the unix sockets with no port details and a whole bunch of dbus stuff.

It looks like this: ( Certainly nothing like what im used to seeing... )

unix 3 [ ] STREAM CONNECTED 9513
unix 3 [ ] STREAM CONNECTED 9524 @/tmp/dbus-QAwlQdsJQE
unix 3 [ ] STREAM CONNECTED 9512
unix 3 [ ] STREAM CONNECTED 9486 @/tmp/dbus-QAwlQdsJQE
unix 3 [ ] STREAM CONNECTED 9485
unix 3 [ ] STREAM CONNECTED 9484 /tmp/.esd-1000/socket
unix 3 [ ] STREAM CONNECTED 9483
unix 3 [ ] STREAM CONNECTED 9481 @/tmp/.ICE-unix/1747
unix 3 [ ] STREAM CONNECTED 9480
unix 3 [ ] STREAM CONNECTED 9482 /tmp/orbit-shawnc/linc-732-0-3edd427234522
unix 3 [ ] STREAM CONNECTED 9479
unix 3 [ ] STREAM CONNECTED 9477 /tmp/orbit-shawnc/linc-76d-0-394aba96acf46
unix 3 [ ] STREAM CONNECTED 9476
unix 3 [ ] STREAM CONNECTED 9478 /tmp/orbit-shawnc/linc-76b-0-14ac964fad8a9
unix 3 [ ] STREAM CONNECTED 9475
unix 2 [ ] DGRAM 9462

I issue,
netstat -t
-a
whatever and its just streams of unix sockets.

I normally issue netstat -tunap on any server. yet this LTS server is odd..

**lynxus** · February 5th, 2013

Found the issue.

Turns out if the firewall hasnt got it allowed out, then it doesnt show!?

Go figure.

_g

Originally Posted by lynxus

Nope doesnt work.
I just see the unix sockets with no port details and a whole bunch of dbus stuff.

It looks like this: ( Certainly nothing like what im used to seeing... )

unix 3 [ ] STREAM CONNECTED 9513
unix 3 [ ] STREAM CONNECTED 9524 @/tmp/dbus-QAwlQdsJQE
unix 3 [ ] STREAM CONNECTED 9512
unix 3 [ ] STREAM CONNECTED 9486 @/tmp/dbus-QAwlQdsJQE
unix 3 [ ] STREAM CONNECTED 9485
unix 3 [ ] STREAM CONNECTED 9484 /tmp/.esd-1000/socket
unix 3 [ ] STREAM CONNECTED 9483
unix 3 [ ] STREAM CONNECTED 9481 @/tmp/.ICE-unix/1747
unix 3 [ ] STREAM CONNECTED 9480
unix 3 [ ] STREAM CONNECTED 9482 /tmp/orbit-shawnc/linc-732-0-3edd427234522
unix 3 [ ] STREAM CONNECTED 9479
unix 3 [ ] STREAM CONNECTED 9477 /tmp/orbit-shawnc/linc-76d-0-394aba96acf46
unix 3 [ ] STREAM CONNECTED 9476
unix 3 [ ] STREAM CONNECTED 9478 /tmp/orbit-shawnc/linc-76b-0-14ac964fad8a9
unix 3 [ ] STREAM CONNECTED 9475
unix 2 [ ] DGRAM 9462

I issue,
netstat -t
-a
whatever and its just streams of unix sockets.

I normally issue netstat -tunap on any server. yet this LTS server is odd..