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What is the most effective security approach to use with a stateless packet filter?
Deny all except specified hosts.
What three packets are exchanged between two hosts when establishing a tcp connection?
The SYN packet, the SYN ACK packet , And ACK packet
What protocol allows hosts to exchange messages to indicate problems with packet delivery?
ICMP The Internet Message Protocol (ICMP) allows hosts to exchange messages to indicate the status of a packet as it travels through the network.
What is stateful packet inspection?
Incoming packets must be legitimate responses to requests from internal hosts. Unsolicited packets are blocked unless permitted specifically. SPI can also include the capability to recognize and filter out specific types of attacks such as DoS.
What is the difference between a router and a firewall?
A router (a piece of hardware) is just a way to move/share a connection with several other computers (i.e. using a router so that all three computers in your house can use the same internet connection) - while a firewall (usually a piece of software) is meant to block unauthorized access (hackers) to your computer/network and help protect you from viruses, spam, etc. ----- Put this way---- With a router (with default settings) in between two or more networks, hosts from any two networks can communicate accross, because router has to entertain them (no security zoning) With a firewall (with default settings) in between two or more networks, hosts from any two networks CANNOT communicate accross, because firewall MUST NOT entertain them (Security Zones) ----BTW Read these lines if you are getting interviewed----- ;)
What is the purpose of a firewall on your computer?
Its primary function is to prevent accesses from untrusted (or undesired) external systems to internal systems and services, and to prevent internal users and systems to access external untrusted or undesired systems and services. More generally, its purpose is to implement security and performance policies. As an example, you can prevent external systems to access internal servers, as well as to prevent users to use P2P software or access social networks, for performance and security reasons.
What statement describes the filtering of traffic via the use of Stateful Packet Inspection?
It permits incoming packets that are legitimate responses to requests from internal hosts.
Host a sends a frame with the destination mac address as ffffffffffff what action will the switch take for this frame?
It will send the frame to all hosts except host A.This is a MAC broadcast address. All hosts on that subnet will receive the packet or frame. With the exception of the sending host of course.
What type of firewall works on the Session layer that creates a connection and allows packets to flow between the two hosts without further checking?
circuit-level gateway
What happen to the packet when it is received by data link layer?
here in data link the actual physical mean of coneection will takes place between source and destination hosts......once packet from network layer enter into data link layer the trailer is gonna add to packet also the MAC(media access control) address of destination host will be determined............once source host get the information of MAC.......its gonna add to packet along with packet then it will be called by name frame....switch will work in this layer and the protocol used are ARP and RARP........
How can one filter email content?
One can a person can filter email content is by downloading an email filter. Another is setting up a filter through Outlook or adjusting the filters on popular email hosts like Gmail and Hotmail to organize where certain emails should go.
How do you say Hosts or Hosted by in Spanish?
hosted is called origanizado hosts is called hosts
