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linux下iptables配置详解 - 更多技术 - 清泛网 - 专注C/C++及内核技术
linux下iptables配置详解如果你的IPTABLES基础知识还不了解,建议先去看看.开始配置我们来配置一个filter表的防火墙.(1)查看本机关于IPTABLES的设置情况[root@tp ~]...如果你的IPTABLES基础知识还不了解,建议先去看看.
开始配置
我们来配置...
Is there a way to stop Google Analytics counting development work as hits?
I have added the JavaScript that I need to the bottom of my pages so that I can make use of Google Analytics. Only problem is that I am sure that it is counting all my development work as hits. Seeing as I probably see some of those pages a hundred times a day it will really skew my readings. Is the...
Custom domain for GitHub project pages
...99.111.153
Check the Github docs to confirm these are the most up-to-date IPs.
Create a CNAME record to point www.example.com to YOUR-GITHUB-USERNAME.github.io.
This is the most confusing part.
Note the YOUR-GITHUB-USERNAME NOT the GitHub repo name! The value of YOUR-GITHUB-USERNAME is determine...
Check status of one port on remote host [closed]
...or Windows, Linux, and Mac OS X.
For example, check for telnet on a known ip:
nmap -A 192.168.0.5/32 -p 23
For example, look for open ports from 20 to 30 on host.example.com:
nc -z host.example.com 20-30
share
...
Select datatype of the field in postgres
...QL allows you to have the same table name (even an identical table) in multiple schemas. The robust way to write that WHERE clause considers that possibility: where table_catalog = ? and table_schema = ? and table_name = ?; But this information_schema view doesn't consider that the DDL might have us...
What is the theoretical maximum number of open TCP connections that a modern Linux box can have
...ed, but that is per client per server port, and needs clarifying.
Each TCP/IP packet has basically four fields for addressing. These are:
source_ip source_port destination_ip destination_port
< client > < server >
Inside the TCP stack, these four fields a...
Get the IP address of the remote host
... class, which contains ServerVariables property which can provide us the IP address from REMOTE_ADDR property value.
5 ...
Boost.Asio的简单使用(Timer,Thread,Io_service类) - C/C++ - 清泛网 - 专注C/C++及内核技术
...服务器,我们需要用户指定一个服务器(如time-nw.nist.gov),用IP亦可.
(译者注:日期查询协议,这种时间传输协议不指定固定的传输格式，只要求按照ASCII标准发送数据。)
using boost::asio::ip::tcp;
int main(int argc, char* argv[])
{
try
{
...
print call stack in C or C++
...ce with demangled function & method names.
std::string backtrace(int skip = 1)
{
void *callstack[128];
const int nMaxFrames = sizeof(callstack) / sizeof(callstack[0]);
char buf[1024];
int nFrames = backtrace(callstack, nMaxFrames);
char **symbols = backtrace_symbols(callstack...
How to connect to Mysql Server inside VirtualBox Vagrant?
...here to comment), this command can be used in something like an Ansible script to automate granting root user permissions: mysql -e "create user 'root'@'10.0.2.2' identified by 'vagrant'; grant all privileges on *.* to 'root'@'10.0.2.2' with grant option; flush privileges;"
– K...