Network & Security

Use 7zip as ISO viewer and encryption utility to password protect files in a ZIP or archive.

Stealth View/Remote Connectivity: use iTALC (free) or LanSchool ($$$)

Network Lines:

1. DS0 (Digital Signal Level Zero) - 64 bit per second channel.
2. DS1=24 DS0
3. DS3=28DS1 Channels=28 T1 Lines (45 Mbps)
4. T1 (T-Carrier System 1) - is a DS1 connected to a copper wire circuit. It carry 23/24 channels in the two pairs of copper lines, common in the US (1.544 Mbps)
5. T3 - is a DS3 connected to a copper wire using coaxial cable rather than pairs of phone wires (45 Mbps)
6. OC-1 (Optical Carrier 1) - fiber optic transmission system called SONET (Synchronous Optical Network). It provides 672 voice channels (64K data channels) (52 Mbps)
7. OC-3 (Optical Carrier 3) - runs at 155 Mbps
8. OC-768 - runs at 40Gbps
9. PRI(Primary Rate Interface) - a form of ISDN (Integrated Services Digital Network) line which is a telecom standard that enables traditional phone lines to carry voice, data, and video traffic. It consists of two pairs of copper lines terminating on a modem from a service provider premises to the customer premises. It uses multiplexing/de-multiplexing techniques to carry more than one channel in a single circuit. Common forms of PRI lines are T1 and E1.
10. E1 - which carry 30 channels in the two pairs of copper lines common in Europe and India
11. SDSL (Symmetrical Digital Subscriber Link) - equal bandwidth for both uploads and downloads. A typical SDSL can support up to 1.5 Mbps for both uploads and downloads.
12. ADSL (Asymmetrical DSL) - provide more network bandwidth downloading and reducing upstream bandwidth. ADSL downloading can be as high as 5 Mbps or more, and 1 Mbps for upload.
13. Cable Internet - uses cable TV infrastructure to transmit data. Cable modem (DOCSIS) restrict upload and download rates and use a slice of the available bandwidth of the connection to download and upload information. Downstream can be as much as 250 Mbps to 1 Gbps, and upstream 384 Kbps to 20 Mbps.

Assign IP to computer via the DOS or system prompt:

1. Search for CMD the right click and run as an admin.
2. On the command prompt c:>, type netsh interface show interface to verify local area network connection.
3. On the command prompt c:>, type netsh interface ip set address "local area network" 192.168.x.x 255.255.255.0 to assign static ip address.
4. On the command prompt c:>, type netsh interface ip set address "local area network" source=dhcp to put the computer back to dhcp.

Note: create a batch file for each commands to set IP and to set computer back to DHCP.

Relevant network windows commands:
1. Pathping [hostname or IP] - combines tracert and ping command with addition of a network latency and packet loss analysis
2. Netstat -an [IP] - list network connections and ports
3. Nslookup [hostname] - find IP address associate with a domain
4. sfc /scannow - scan system files for problems
5. net use - to find out path of the network drives
6. net user [username] * - to reset user password
7. arp -a - shows gateway MAC address
8. set U - shows which user is logged on
9. set L - shows the logon server
10. ping -a [IP] - resolves IP to hostname
11. ping -t [IP} - pings host until stopped
12. ipconfig /flushdns - flushes the DNS resolver cache
13. gpupdate /force - to update security policy of the computer

Run/Search Windows Commands:
1. mstsc - opens RDP connection
2. mmc - opens management console
3. services.msc - opens windows services
4. eventvwr.msc - opens event viewer
5. cmd - opens command prompt using the 32-bit cmd shell

Kali Linux Command
1. arping [IP] - to find out if device is online but didn't respond to ping command