How to correctly use strace -e read=fd option?

I’m trying to monitor read activity on a particular file descriptor in a running process. Here is the C++ test bench I’m testing various solutions on: #include <fcntl.h> #include <unistd.h> #include <sys/stat.h> #include <iostream> int main() { const int fd1=open(“/tmp/testfile”, O_RDWR|O_CREAT); const int fd2=open(“/tmp/testfile”, O_RDONLY); write(fd1, “Hello, world!”, 13); std::cout << “PID: ” << getpid()…

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Cisco router port forwarding works from outside networks but not from the local network

I have a Cisco Professional Express router. This is it’s current configuration: #show run Building configuration… Current configuration : 6550 bytes ! ! Last configuration change at 10:56:18 PCTime Wed Jan 15 2020 by admin ! version 15.4 service timestamps debug datetime msec localtime service timestamps log datetime msec localtime service password-encryption ! hostname <private>…

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