User Account

All Pages

Access control list, Computer Network Security

Assignment Help:
Scenario: A network with individual hosts (really, virtual machines) can run HTTP (web) servers that are available to the outside. (Here, available means the ability to read and write data.) The hosts can also run email (SMTP) servers available to other hosts on the network, but these are not available to the outside. Instead, all outside mail is routed to a machine named “S”, which forwards it to the internal host, and all internal mail addressed to external hosts is routed to “S”, which forwards it to the destination. There are no other servers available to the outside on “S”.

Model access control matrix using three hosts, “S”, “I” for a host on the network, and “O” for an outside host. Don’t forget to include the HTTP servers!

Write a command that allows “I” to exchange email directly with “O”, bypassing “smtphost” entirely.

Now consider a second host called “R” on the network. This host has just been added to the network and has no rights initially. Write a command that gives it the ability to send email to “O” if, and only if, “I” can send mail directly to “O”.

Related Discussions:- Access control list

Describe the functioning of cloud computing, Question 1:  Describe the ...

Question 1:  Describe the functioning of cloud computing. Question 2: Discuss on "Platform as a Service". Question 3: Discuss the steps involved in effective co

Packet filtering firewall-dynamic packet filtering, Dynamic Packet Filterin...

Dynamic Packet Filtering Dynamic Packet Filtering is also referred to as stateful firewalling. Here the firewall maintains the status of connections as well. When a connection

TCP Congestion Control ., Explain TCP congestion control.

Explain TCP congestion control.

Address masks, ADDRESS MASKS To identify receiver, network apply addre...

ADDRESS MASKS To identify receiver, network apply address mask to receiver address and calculate to network address in routing table. It can use Boolean 'and' to calculate the

Uyfguhg, what is an SSID?

what is an SSID?

Categories of controls-information security, Categories of Controls Cont...

Categories of Controls Controlling risk through mitigation, avoidance or transference is accomplished by implementing controls. There are 4 effective approaches to select the co

Limitations of ethical dilemma, The best results obtained in the PIIT class...

The best results obtained in the PIIT classes have been when the technique has been used in tutorial groups, rather than have students submit individual reflections on particular c

Fragment identification, FRAGMENT IDENTIFICATION: IDENT field in every...

FRAGMENT IDENTIFICATION: IDENT field in every fragment matches IDENT field in real datagram. Fragments from different datagrams may arrive out of order and still be saved out.

Sending an arp message, Normal 0 false false false EN-U...

Normal 0 false false false EN-US X-NONE X-NONE

Write Your Message!

Captcha
Order Assignment

Featured Services

Order Now

Popular Subjects

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

Submit Assignment

Academics

Major Subjects

Majors

Get In Touch

whatsapp: +91-977-207-8620

Phone: +91-977-207-8620

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd