services
Change the default application install path Change the default Win2000 install path A warmer welcome Tell Win2000 where to find the service pack files Remove Unwanted programs from Add/Remove Programs Open My Computer icon in Explorer view Keep the Print Spooler service from displaying dialog boxes Stop Print Job Logging in the Event Log Disable [...]
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1. How to know which ports are listening from your IP address? # nmap -sT -O your-ip-address 2. How to grep an exact match? # grep -w textfile.txt 3. How to reverse grep matches? # grep -v textfile.txt # 4. How to know which service name is what port? Assuming port 443 # cat testfile.txt [...]
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1. How to you change file ownership and chown files recursively? # chown user:user folder -R 2. How to view queued mail in sendmail or postfix? # mailq 3. How to show which alternative binary program does your machine executes first? # alternatives –display program-name 4. How to create public/private rsa key pair? # ssh-keygen [...]
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Server SSH log files provides us information from simple system to critical system security message. Here are quick ways of doing it via CLI terminal. These examples could serve also as starting point to parse more search key strings not only from any ssh log files, but also to other daemon service log file such [...]
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As we all know, by default installation and kickstart of openssh daemon service (sshd), it binds itself to all existing IP address from given host. Alternatively, if you wish to bind sshd service to selected IP address, this is possible by simply editing /etc/ssh/sshd_config file. First, always make a backup copy of conf files you [...]
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Syncronizing your current date and time is as important as making database backups. Without proper accurate stamped date and time, any backup file with any stamped date on it would be meaningless. Without correct time and date, those scripts that depend on date and time schedule would be executed inaccurately and would give you result [...]
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This entry will cover a one shot linux fetchmail command of retrieving GMail email messages using terminal without any further fetchmail configuration setup. Read on. Fetchmail is one good linux tool for fetching and retrieving remote emails. Fetchmail works and retrieves emails from remote email servers and downloads them locally into your local linux box. [...]
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The telnet command is used to communicate with another host using the TELNET protocol. If telnet is invoked without the host argument, it enters command mode, indicated by its prompt ( telnet>). In this mode, it accepts and executes the commands listed below. If it is invoked with arguments, it performs an open command with [...]
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A very old tip and trick on blocking yahoo chat messenger from connecting to internet, as per request. Considering an approved management policies, there are several ways to block yahoo chat messenger from connecting to internet coming from inside your network, depending on what equipment and boxes you have on ground. If you happen to [...]
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RSync backups data and does it very clean and well. Rsync only transfers those data that have been modified and changed so that the destination host has an exact replica from the source host. Rysnc is a command line backup tool that handles data transfers in an effective and secure manner like any other known [...]
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Why Secure Your Web Browser? Today, web browsers such as Internet Explorer, Mozilla Firefox, and Apple Safari (to name a few), are installed on almost all computers. Because web browsers are used so frequently, it is vital to configure them securely. Often, the web browser that comes with an operating system is not set up [...]
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BIND DNS are nameservers responsible basically for resolving domain names or hostnames into their equivalent IP addresses. Websites or domain names have their own equivalent IP addresses that are usually managed and provided by the same website firms. If somebody is browsing a website from his browser, this website is being resolved, looked up and [...]
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We can never remove the fact that some companies still use any other desktop operating systems from their network. Several reasons for these are due to commercial and propriety softwares and customized applications that currently being managed and needed by certain specific company departments, whether those clients are located remotely or just a single department [...]
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How to know which port is open from unmanaged remote host? How to determine running application and services from remote host? How to do basic port scanning against a host? How to confirm ports opened from remote host? Here are a several ways to do port scanning and know which port/services are currently opened from [...]
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The Trivial File Transfer Protocol (TFTP) is normally used only for booting diskless workstations. The tftp-server package provides the server for TFTP, which allows users to transfer files to and from a remote machine. TFTP provides very little security, and should not be enabled unless it is expressly needed. The TFTP server is run from [...]
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