tcp-port

Access to custom TCP Rule in AWS EC2 [closed]

由 时光怂恿深爱的人放手 提交于 2021-02-10 09:42:37
问题 Closed. This question needs debugging details. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 3 years ago . Improve this question I had created a custom TCP rule in aws EC2 server. And the inbound and the outbound rules for the rule is anywhere mean anyone can access the port. But the port is not enabled. I was getting a problem like port is closed whenever I tried to check it using "yougetsignal". Whereas

get open TCP port in Python

由 孤街浪徒 提交于 2019-12-29 03:35:06
问题 I want to get any random open TCP port on localhost in Python. What is the easiest way? 回答1: My current solution: def get_open_port(): import socket s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) s.bind(("",0)) s.listen(1) port = s.getsockname()[1] s.close() return port Not very nice and also not 100% correct but it works for now. 回答2: The free port can be found by binding a socket to a port selected by the operating system. After the operating system selects a port the socket can be

IPAddress.Parse() using port on IPv4

由 ◇◆丶佛笑我妖孽 提交于 2019-12-21 07:28:08
问题 I'm trying to parse a string containing an IP address and a port using IPAddress.Parse. This works well with IPv6 addresses but not with IPv4 addresses. Can somone explain why this happens? The code I'm using is: IPAddress.Parse("[::1]:5"); //Valid IPAddress.Parse("127.0.0.1:5"); //null 回答1: Uri url; IPAddress ip; if (Uri.TryCreate(String.Format("http://{0}", "127.0.0.1:5"), UriKind.Absolute, out url) && IPAddress.TryParse(url.Host, out ip)) { IPEndPoint endPoint = new IPEndPoint(ip, url.Port

Get all connected IP´s on the Linux machine [closed]

由 扶醉桌前 提交于 2019-12-13 11:16:17
问题 It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center. Closed 6 years ago . Recently i was asked a question in an interview which i couldn't do. Anyone got a solution for this? Grab all connected IP´s on the Linux machine check every connected IP if TCP port 1706 is open if its open >

How to find number of ephemeral ports in use?

由 本秂侑毒 提交于 2019-12-06 06:44:06
问题 I have a situation where I am running into ephemeral port exhaustion, which is then causing exceptions. I would like to throttle the connections to avoid this. Is there a way to detect the number of ephemeral ports in use? Thanks, Erick 回答1: To get list of open connection you may use netstat command. Contrary to popular believe (of other answers) number of Ephemeral ports is limited (4000 on Windows 2003, some 16000 on later versions, 16000 on most Linuxes). Note also that it take 4 minutes

How to find number of ephemeral ports in use?

由 人走茶凉 提交于 2019-12-04 13:11:25
I have a situation where I am running into ephemeral port exhaustion, which is then causing exceptions. I would like to throttle the connections to avoid this. Is there a way to detect the number of ephemeral ports in use? Thanks, Erick To get list of open connection you may use netstat command. Contrary to popular believe (of other answers) number of Ephemeral ports is limited (4000 on Windows 2003, some 16000 on later versions, 16000 on most Linuxes). Note also that it take 4 minutes to release port once it become unused therefore it really can be an issue. There is article on MSDN dealing

IPAddress.Parse() using port on IPv4

由 僤鯓⒐⒋嵵緔 提交于 2019-12-04 01:01:33
I'm trying to parse a string containing an IP address and a port using IPAddress.Parse. This works well with IPv6 addresses but not with IPv4 addresses. Can somone explain why this happens? The code I'm using is: IPAddress.Parse("[::1]:5"); //Valid IPAddress.Parse("127.0.0.1:5"); //null Uri url; IPAddress ip; if (Uri.TryCreate(String.Format("http://{0}", "127.0.0.1:5"), UriKind.Absolute, out url) && IPAddress.TryParse(url.Host, out ip)) { IPEndPoint endPoint = new IPEndPoint(ip, url.Port); } This happens because the port is not part of the IP address. It belongs to TCP/UDP, and you'll have to

get open TCP port in Python

由 天涯浪子 提交于 2019-11-28 19:14:49
I want to get any random open TCP port on localhost in Python. What is the easiest way? My current solution: def get_open_port(): import socket s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) s.bind(("",0)) s.listen(1) port = s.getsockname()[1] s.close() return port Not very nice and also not 100% correct but it works for now. The free port can be found by binding a socket to a port selected by the operating system. After the operating system selects a port the socket can be disposed. However, this solution is not resistant to race conditions - in the short time between getting the free
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