All Questions
6
questions
3
votes
1
answer
3k
views
UDP port appears in netstat but not in lsof?
After using Mosh, I noticed that UDP ports held by mosh-server were still in use after all processes exited.
Running netstat -ln, it shows that these ports are in use:
Active Internet connections
...
- 371
1
vote
1
answer
1k
views
How to find out the PID which generates traffics to port 9229 in MacBook
There are unknown traffics to port 9229 in my MacBook.
$ sudo tcpdump -i any -n port 9229
......
12:10:39.176502 IP6 ::1.62261 > ::1.9229: Flags [S], seq 638850191, win 65535, options [mss 16324,...
- 31
2
votes
1
answer
1k
views
How to check which process is flooding TCP SYN connections on Linux?
My Server is running Fedora Core 13. One day I found there were a lot of abnormal traffic that tried to initiate TCP connections with outside hosts. I tried to remove the default route and the DNS ...
- 21
1
vote
0
answers
199
views
Per-process network usage on OSX?
I want to periodically poll for per-process network usage. Is there a way to do this efficiently in OSX like netstat -p on Linux? I know there's lsof -i -Tqsf but it doesn't seem to show bytes sent/...
- 111
1
vote
2
answers
2k
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 ...
- 111
1
vote
1
answer
792
views
How can I unbind a UDP port that has no entry in lsof?
On my Mac, I have a UDP port that is "already in use", but doesn't have an associated process:
sudo netstat -na | grep "udp.*\.500\>"
shows
udp4 0 0 192.168.50.181.500 *.* ...
- 131