netstat

I have a Java application running in WebLogic 11g on Windows, which after several days, becomes unresponsive. One suspicious symptom I've noticed is that a large number of connections (about 3000) show up in netstat with a CLOSE_WAIT status even when the server is idle. Since the application server is managing the client connections, I'm not sure what's causing this. We also make a number of web service calls that loopback to the same server, but I believe those connections get closed properly. What else could cause this and how does one troubleshoot a problem like this? Rafael Colucci I have

I would like to execute netstat inside a running docker container to see open TCP sockets and their statuses. But, on some of my docker containers, netstat is not available. Is there any way to get open sockets (and their statuses, and which IP addresses they are connected to if any) without using netstat, via some docker API? (BTW, my container uses docker-proxy - that is, not directly bridged) I guess I could look at /proc file system directly, but at that point, I might as well docker cp netstat into the container and execute it. I was wondering if there was any facility that docker might

Some things look strange to me: What is the distinction between 0.0.0.0, 127.0.0.1, and [::]? How should each part of the foreign address be read (part1:part2)? What does a state Time_Wait, Close_Wait mean? etc. Could someone give a quick overview of how to interpret these results? 0.0.0.0 usually refers to stuff listening on all interfaces. 127.0.0.1 = localhost (only your local interface) I'm not sure about [::] TIME_WAIT means both sides have agreed to close and TCP must now wait a prescribed time before taking the connection down. CLOSE_WAIT means the remote system has finished sending and

Preamble Like many, I've spent more hours debugging my IDE’s connection to XDebug than I have using XDebug to debug my programs. I’ve gotten it to work repeatedly , but every once and a while I get the common “Waiting to connect” problem . I haven’t been able to localize what causes XDebug to work or fail. I’ve been using ubuntu for two years; I’m neither a noob nor an strace guru. What am I doing wrong? How can I better debug my IDE’s connection to XDebug? Setup Ubuntu 10.10 Netbeans 6.9.1 PHP 5.3.3-1ubuntu9 with Suhosin-Patch Xdebug v2.1.0 with debugclient built Sep 20 2010 from source using

I have Batch code like this @echo off :begin SET d=netstat -an | find /c "0.0.0.0:80" rem echo %d% if %%d == "2" ( echo true pause rem exit ) else ( echo false pause rem GOTO begin ) I want make netstat stetment output stored in variable d, and d became parameter from If cluse, What wrong with my file ? You don't need to set a variable in your case. This should work : netstat -an | find /c "0.0.0.0:80" && echo true || echo False But if you need to have this value in a variable you can do like this : @echo off for /f %%a in ('netstat -an ^| find /c "0.0.0.0:80"') do set D=%%a if %D% equ 2 (

-a 所有端口 -t tcp，有监听的状态 -u udp -n 数字方式显示 -l 显示监控中的服务器的socket -p 程序 netstat -autn Proto Recv-Q Send-Q Local Address Foreign Address State tcp 0 0 127.* 0.0.0.0:* LISTEN tcp 0 0 10.* 0.0.0.0:* LISTEN tcp 0 0 0.0.0.0:8281 0.0.0.0:* LISTEN tcp 0 0 0.0.0.0:8379 0.0.0.0:* LISTEN 1. netstat -antp |grep 9989 tcp6 0 0 :::9989 :::* LISTEN - tcp6 0 0 10.*************************************62301 ESTABLISHED - tcp6 0 0 10.*************************************62300 ESTABLISHED - 2. netstat -ntp |grep 9989 tcp6 0 0 10.*************************************62301 ESTABLISHED - tcp6 0 0 10.***********************

I frequently start server on local address [::]:8080 . To terminate server I need PID fetched from netstat -aon . To terminate this server I do taskkill /F /PID <found pid> I want to create windows batch file that can find PID and apply it in call taskkill /F /PID <found pid> How can I create such batch file? Thanks! On my PC there could be a UDP or TCP connection and they require slightly different code: Test this to see if one of the taskkill commands looks right and remove echo to enable the taskkill command. @echo off for /f "tokens=5" %%a in ('netstat -aon ^|find " [::]:8080 " ^|find /i "

# 很多时候我们会遇到服务器遭受 cc 或 syn 等攻击，如果发现自己的网站访问异常缓慢且流量异常。可以使用系统内置 netstat 命令 简单判断一下服务器是否被攻击。常用的 netstat 命令 该命令将显示所有活动的网络连接。 #netstat -na 查看同时连接到哪个服务器 IP 比较多，cc 攻击用。使用双网卡或多网卡可用。 # netstat -an|awk '{print $4}'|sort|uniq -c|sort -nr|head 查看哪些 IP 连接到服务器连接多，可以查看连接异常 IP。 #netstat -an|awk -F: '{print $2}'|sort|uniq -c|sort -nr|head 显示所有 80 端口的网络连接并排序。这里的 80 端口是 http 端口，所以可以用来监控 web 服务。如果看到同一个 IP 有大量连接的话就可以判定单点流量攻击了。 #netstat -an | grep :80 | sort 这个命令可以查找出当前服务器有多少个活动的 SYNC_REC 连接。正常来说这个值很小，最好小于 5。 当有 Dos 攻击或的时候，这个值相当的高。但是有些并发很高的服务器，这个值确实是很高，因此很高并不能说明一定被攻击。 #netstat -n -p|grep SYN_REC | wc -l 列出所有连接过的 IP 地址

linux 　　netstat -tunpl | grep 8080 如果查到有记录，表示此端口存在 window 　　netstat -ano | findstr 8080 如果查到有记录，表示此端口存在 来源： https://www.cnblogs.com/longqin/p/11720899.html