OSI Layers and IP Address Classes

-


Resources: http://vlsm-calc.net/models.php



Resources: http://vlsm-calc.net/ipclasses.php

Comments

Post a Comment

Popular posts from this blog

Synology DiskStation Quick Installation

-
Image
Before plugging power, make sure that you installed HDD correctly. Then connect ethernet cable and power cable. Power on the DiskStation. Open a web browser on a computer connected to the same network as the DiskStation. Enter either of the following into the address bar of your browser: find.synology.com OR you can find the IP address of the device by checking your DHCP server. Please note that there is reset button next to LAN input.  If you forget your password, feel free to reset it. I reseted my synology, it reset only login credentials. Then install disk station manager. The default password is "admin", leave the password blank. Then create a volume. (MainMenu {#1 on the the picture below}> Storage Manager) I have 4 hdd, I use RAID5 with 3 hdd. And I keep 4th one for other purpose. When you create volume, DSM (Disk Station Manager) will help you with installation. 1-It gives main menu. 2- By going Control Panel; you can change the settings.
Read more

iBoss Tips&Problems

-
Image
Good morning everyone, Hope you will a great day! Today I want to share my experience about filter. I use several filter softwares at my schools. To me, the best one is iBoss filter. You can block by category, website url, and categories. Also, it has a beautiful reports section. The support team is very helpful. Here are some problems and solutions which I experienced before. How to Reboot iBOSS;Preferences>>System Settings>> Reboot button Restrict Google servers for only abcdecharter.org; Controls>Social Media>Restrict Google Services Domains WhilteList (Domain Bypassing) Preferences>>User Settings>>Global User Settings If the ssl decryption is not ON, keyword blocking works on only non-ssl websites. Don't FORGET TO CLEAR your device cache after changing settings in IBOSS! For better filtering, QUIC ports should be blocked! (disabling safe search) Otherwise, some words can bypass on Google search. You can close QUIC ports on iBoss or
Read more

Sonicwall; Open a port and how to use sonicwall wizard

-
Image
I want to explain how to open a port on Sonicwall firewall. To open a port; you need to create the followings. If you do that in order, it will be easy. 1- Address Object: Create a host on the LAN zone. (For example; Phonesystem computer; 10.x.x.x) If it is not created, create a host for WAN zone. (For example; External IP; 98.234.123.32) Address Group=You can group some address objects in one group. 2- Service Object: Create ' servicename ' with port number or HTTP/HTTPS or another service. 3-  Create NAT Policies: Show where it goes. Tie address objects with a port number. 4-  Firewall Access Rule: Give access permission from WAN>LAN. For more information, please visit  https://www.sonicwall.com/en-us/support/knowledge-base/170503477349850 If you use wizard, it will be more easy. ======================== Q: What can you do with sonicwall wizard? Setup Guide - This wizard will help you quickly configure the SonicWall to secure your Internet c
Read more