03-01-2010
Ok, lets take it one column at a time:
- Proto is the protocol used. tcp and udp should be pretty self-explanatory. icm is short for ICMP, which is a network control protocol (pings use ICMP echo/reply messages). The number at the end specifies if it's IPv4 or IPv6
- Recv-Q and Send-Q are the receiving and sending queues. If those aren't zero, you're either sending much faster than the other side can read, or you're not reading fast enough yourself.
- Local Address is the local IP and port used, while Foreign Address is the remote site and port.
- State is the state (duh) of the connection. LISTEN means there's a local server listening, ESTABLISHED ...well should be clear, CLOSE_WAIT means you're waiting for confirmation that the connection can be closed. For more details, read up on the TCP protocol.
The second part are UNIX domain sockets, which are a kind of IPC, acting like a network socket.
- The Address is the memory address used
- The queues mean pretty much the same as above
- The Inode is just that. In keeping with "everything is a file", UNIX sockets can be addressed via the respective inode on the filesystem
- Addr is the "address", the "file" used.
For a more in-depth explanation I'd have to read up on it again.
This User Gave Thanks to pludi For This Post:
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
# netstat -in
Name Mtu Network Address Ipkts Ierrs Opkts Oerrs Coll
net1 1500 192.168 192.168.0.11 24508 0 12212 112931 2795
lo0 8232 127 127.0.0.1 42 0 42 0 0
atl0* 8232 none none No Statistics... (1 Reply)
Discussion started by: samprax
1 Replies
2. Shell Programming and Scripting
i'd like to grep a range of ports on a netstat -nt output, localaddress, say :1 to :1023. how do i do it via sed/awk/grep?
Thanks,
Marc (1 Reply)
Discussion started by: marcpascual
1 Replies
3. Solaris
Dear Experts,
I put below command-
could you please describe the outputs column-
let me describe some them-
col_1: (10.131.60.48.55880) The IP address of the local computer and the port number being used for this particular connection appear in the Local Address column.
col_2:... (3 Replies)
Discussion started by: thepurple
3 Replies
4. HP-UX
Hi,
Does anyone know why I get a different output when using "netstat -a" or "netstat -an" ??
# netstat -a | grep ts15r135
tcp 0 0 nbsol152.62736 ts15r135.23211 ESTABLISHED
# netstat -an | grep 172.23.160.78
tcp 0 0 135.246.39.152.51954 ... (4 Replies)
Discussion started by: ejdv
4 Replies
5. UNIX for Dummies Questions & Answers
hi all,
when I run-
wcars1j5#netstat -an | grep 8090
127.0.0.1.8090 *.* 0 0 49152 0 LISTEN
wcars1j5#
1. does this mean that no one is connected to this port?
Regards,
akash (1 Reply)
Discussion started by: akash_mahakode
1 Replies
6. IP Networking
I have a TCPIP server application (a Vendor package) which by default allows 10 connections. It provides a parameter to allow us to increase the maximum allowable connections in case it is needed. Intermittently this application is failing with maximum number of connections reached even when there... (1 Reply)
Discussion started by: AIX_user
1 Replies
7. UNIX for Advanced & Expert Users
Hi,
I'm trying to figure out how much traffic has been generated and received from netstat -s output (using Linux). I can see the output shows packet counts and Octet values, how would I correctly calculate how much traffic in and how much out?
My output below:
Ip:
88847576 total... (1 Reply)
Discussion started by: wilsonee
1 Replies
8. UNIX for Dummies Questions & Answers
Hi,
I have old SCO O/S. System keeps crashing. I made lot of changes to kernel but so for nothing helped. I wrote a script which takes netstat -an output every one minute. I saw some thing right before the system crashed. Not sure if this means anything..
uname -a
SCO_SV djx2 3.2... (2 Replies)
Discussion started by: samnyc
2 Replies
9. Shell Programming and Scripting
Hi Team,
Below is the output of netstat -an | grep 1533
tcp 0 0 17.18.18.12:583 10.3.2.0:1533 ESTABLISHED
tcp 0 0 17.18.18.12:370 10.3.2.0:1533 ESTABLISHED
Below is the o/p of netstat -a | grep server_name
tcp 0 ... (4 Replies)
Discussion started by: Girish19
4 Replies
10. UNIX for Beginners Questions & Answers
Hi All,
I am trying to collect the listen ports info from netstat command in centos 7
From that info i am trying to collect all the foreign address IP for those ports.
I am using below script to do the same.
netstat -an |grep -w "LISTEN" |grep -v "127.0.0.1" |awk '{print $4}' >... (3 Replies)
Discussion started by: sravani25
3 Replies
LEARN ABOUT FREEBSD
setfib
SETFIB(1) BSD General Commands Manual SETFIB(1)
NAME
setfib -- execute a utility with an altered default network view
SYNOPSIS
setfib [-F] fib utility [argument ...]
DESCRIPTION
The setfib utility runs another utility with a different routing table. The table number fib will be used by default for all sockets started
by this process or descendants.
ENVIRONMENT
The PATH environment variable is used to locate the requested utility if the name contains no '/' characters.
EXIT STATUS
If utility is invoked, the exit status of setfib is the exit status of utility.
An exit status of 126 indicates utility was found, but could not be executed. An exit status of 127 indicates utility could not be found.
EXAMPLES
Run netstat(1) to view the second routing table.
setfib -F 1 netstat -rn
or
setfib 1 netstat -rn
or
setfib -1 netstat -rn
SEE ALSO
setfib(2), setsockopt(2)
STANDARDS
The setfib utility is a FreeBSD specific extension. However, many UNIX-like systems have an equivalent function.
HISTORY
The setfib utility appeared in FreeBSD 7.1.
BSD
October 20, 2008 BSD