0
votes
0answers
82 views

Lots of packets pruned from receive queue because of socket buffer overrun - reason to worry?

I know this question has been asked before, but maybe not in this particular context: I have a setup with a couple of MS2008R2 HyperVisor servers running a number of Ubuntu guests. Our webproxy runs ...
-1
votes
0answers
46 views

netstat showing too many connections (Established) [duplicate]

Possible Duplicate: Too Many ESTABLISHED connection from a single IP address in Apache netstat -ntp |grep 80 shows too many ESTABLISHED connection from single IP address. Around 300 of ...
1
vote
2answers
740 views

What does this output from HPing mean?

hping command: hping3 -G --rroute $domain -i u1000 Result: len=80 ip=127.0.0.1 ttl=64 DF id=0 sport=0 flags=RA seq=176 win=0 rtt=0.2 ms (same route) len=80 ip=127.0.0.1 ttl=64 DF id=0 sport=0 ...
1
vote
2answers
9k views

Serial port forwarding over TCP/IP (linux server)

I am looking for a way to use a remote serial port on a linux machine over LAN. The machine is running ubuntu 10.04 and I have a arduino board connected to it, that I would like to be able to ...
0
votes
1answer
212 views

Detect and aggregate packets sent to server per TCP port

Is there a way with Ubuntu 10.4LTS to detect and aggregate the number of packets transmitted over every port? In other words, I'd like a process to keep track of the number of packets sent to each ...
7
votes
1answer
2k views

limits.conf setting doesn't 'stick'

Trying to get the equivalent of ulimit -n 20000 on a high load web server, however the /etc/security/limits.conf on ubuntu hardy doesn't seem to stick. here is what I set in the config file. root ...
5
votes
4answers
10k views

Running lsof -i shows a lot of connections in CLOSE_WAIT ? Should I worry

So I am running lsof -i | wc -l periodically and it is telling me that out of 420 lines, between 240 and 255 are in CLOSE_WAIT state. How does TCP connections enter this state ? Should I be worried ...
1
vote
2answers
1k views

How do I persist a route in Ubuntu 9.04?

I have a route that I am manually adding at each reboot: route add -net 192.168.126.0/24 gw 192.168.1.1 dev eth1 How can I make this route persistent? I've seen quite a few articles online that ...