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What is the difference between active and passive FTP?
Can someone tell me what is the difference between active and passive FTP?
Which one is preferable?
5 Answers
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How to add text at the end of each line in Vim?
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The last row has an extra ', should be :'<,'>s/$/,/.
– cjg
Dec 23 '14 at 17:14
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How to set SQL Server connection string?
...hen I connect my application to SQL Server on my PC, I know the connection string (server name, password etc.), but when I connect it to another PC, the SQL Server connection string is different. Is there a common account in SQL Server that come with default account that can connect? I have heard ab...
What is the difference between 0.0.0.0, 127.0.0.1 and localhost?
I am using Jekyll and Vagrant on my mac. I found that Jekyll server will bind to 0.0.0.0:4000 instead of 127.0.0.1:4000 . Also gem server will bind to this address by default. I can still visit it via http://localhost:port . But for Jekyll , it seems that the default setting (e.g. 0.0....
difference between socket programming and Http programming
...istent connections are available)
MSDN example:
public static void Main (string[] args)
{
HttpWebRequest request = (HttpWebRequest)WebRequest.Create (args[0]);
HttpWebResponse response = (HttpWebResponse)request.GetResponse ();
Console.WriteLine ("Content length is {0}", response.Cont...
How do SO_REUSEADDR and SO_REUSEPORT differ?
The man pages and programmer documentations for the socket options SO_REUSEADDR and SO_REUSEPORT are different for different operating systems and often highly confusing. Some operating systems don't even have the option SO_REUSEPORT . The WEB is full of contradicting information regarding th...
Hook up Raspberry Pi via Ethernet to laptop without router? [closed]
...ially recover the Raspberry Pi, it will most likely be in a rural location and I'd like to turn off the Pi at that point safely.
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How to configure PostgreSQL to accept all incoming connections
...of IPs to be authorized, you could edit /var/lib/pgsql/{VERSION}/data file and put something like
host all all 172.0.0.0/8 trust
It will accept incoming connections from any host of the above range.
Source: http://www.linuxtopia.org/online_books/database_guides/P...
开源跳板机(堡垒机)Jumpserver v2.0.0 使用说明 - 开源 & Github - 清泛网 ...
...e 可以进入二级菜单批量在主机执行命令，根据提示输入IP，支持通配符，可以逗号分隔，下面输入执行的命令
注意：报错可能提示没有目录权限，添加该目录并修改权限
# mkdir –p /opt/jumpserver/logs/exec_cmds
# chmod 777 /opt/jumpse...
Efficiently test if a port is open on Linux?
...mp;6
I'm using 6 as the file descriptor because 0,1,2 are stdin, stdout, and stderr. 5 is sometimes used by Bash for child processes, so 3,4,6,7,8, and 9 should be safe.
As per the comment below, to test for listening on a local server in a script:
exec 6<>/dev/tcp/127.0.0.1/445 || echo "N...