尝试添加服务器时(这是我第一次安装)
配置:
postgres 12
centos 7
pgadmin 4
我得到了
could not connect to server: Permission denied
Is the server running on host "localhost" (::1) and accepting
TCP/IP connections on port 5432?
could not connect to server: Permission denied
Is the server running on host "local
我正在尝试使用这里给出的例子在docker for windows (工具箱)上运行一个最小的融合社区示例:
但似乎所有组件都启动了,只有ksql-datagen失败了,其中一些组件不工作,
$ docker-compose.exe ps
The system cannot find the path specified.
Name Command State Ports
-------------------------------------------------
我正在尝试实现握手功能。我正在发送SYN数据包和服务器响应通过ACK包。为了获得服务器响应,我使用了recvfrom函数,即挂起。这是我的密码。
import socket, sys
from struct import *
import codecs
def checksum(msg):
s = 0
for i in range(0, len(msg), 2):
w = ord(msg[i]) + (ord(msg[i+1]) << 8 )
s = s + w
s = (s>>16) + (s & 0
我正在尝试实现握手功能(SOCK_RAW)。我正在发送SYN数据包,服务器通过SYN+ACK数据包进行响应,但是我用重置完成了连接
import socket, sys
from struct import *
import codecs
def checksum(msg):
s = 0
for i in range(0, len(msg), 2):
w = ord(msg[i]) + (ord(msg[i+1]) << 8 )
s = s + w
s = (s>>16) + (s & 0xffff);
我在iptables中使用NAT函数尝试了这个例子,但是失败了
举例说明。PC A IP为1.1.1.1 (Win7)我的服务器IP为2.2.2.2 (CentOS 6.2)目标服务器B为3.3.3.3 (Windows 2003)
流程: PC A WanIP -> My Server A --> Server B (WanIP)
我的表规则:
1. iptables -t nat -A PREROUTING -d 2.2.2.2 -p tcp --dport 80 -j DNAT --to-destination 3.3.3.3:80
2. iptables -t nat -A
我试图使用原始套接字向服务器发送GET请求。我使用原始套接字,以便编辑数据包窗口大小。这是我的密码。
import socket, sys
from struct import *
def checksum(msg):
s = 0
for i in range(0, len(msg), 2):
w = ord(msg[i]) + (ord(msg[i+1]) << 8 )
s = s + w
s = (s>>16) + (s & 0xffff);
s = s + (s >> 16)