Readers ask: Which two ports should packet-filtering rules address when establishing rules for web access?

What are the two standard ports used by FTP along with their function?

FTP control is handled on TCP port 21 and its data transfer can use TCP port 20 as well as dynamic ports depending on the specific configuration. SSH is the primary method used to manage network devices securely at the command level.

Which of the following is described as the combination of an IP address and a port number?

The combination of an IP address and a port number is called a socket. A socket uniquely identifies a single network process within the entire Internet. Sometimes the terms “socket” and “port number” are used interchangeably.

At what layer of the OSI model do proxy servers generally operate?

At the Application layer of the OSI model, the proxy servers manage security.

What type of attack are stateless packet filters particularly vulnerable to?

Stateless packet filters are generally vulnerable to attacks and exploits that take advantage of problems within the TCP/IP specification and protocol stack.

What are the 3 types of port numbers?

The port numbers are divided into three ranges: the well-known ports, the registered ports, and the dynamic or private ports.

Why FTP is not secure?

FTP was not built to be secure. It is generally considered to be an insecure protocol because it relies on clear-text usernames and passwords for authentication and does not use encryption. Data sent via FTP is vulnerable to sniffing, spoofing, and brute force attacks, among other basic attack methods.

What is the unique combination of port number and IP address is known as?

The combination of an IP address and a port number is called a socket. A socket uniquely identifies a single network process within the entire Internet. Sometimes the terms “socket” and “port number” are used interchangeably.

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What is the use of port 8080?

The most commonly used example is assigning port 8080 for a web server. To get traffic to this web server, you would need to append the port number to the end of the domain name like http://websitename.com:8080. Note that using port 8080 is not reserved for secondary web servers.

What is TCP vs UDP?

TCP and UDP are both transport layer protocols. TCP is a connection orientated protocol and provides reliable message transfer. UDP is a connection less protocol and does not guarantee message delivery.

What is a security proxy?

Proxy Servers and Network Security

Proxies provide a valuable layer of security for your computer. They can be set up as web filters or firewalls, protecting your computer from internet threats like malware.

What are two primary features that give proxy servers an advantage over Nat?

What are the two primary features that give proxy servers an advantage over NAT? Content filtering and improved performance, reverse proxy.

What are the two modes in which IPsec can be configured to run?

The IPsec standards define two distinct modes of IPsec operation, transport mode and tunnel mode. The key difference between transport and tunnel mode is where policy is applied. In tunnel mode, the original packet is encapsulated in another IP header. The addresses in the other header can be different.

In what type of attack are zombies usually put to use?

Zombies can be used to conduct distributed denial-of-service (DDoS) attacks, a term which refers to the orchestrated flooding of target websites by large numbers of computers at once.

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What is a step you can take to harden a bastion host?

Some of the additional steps required for host bastion hardening include (1) configuring automatic time synchronization, (2) updating software packages, (3) updating the kernel, (4) removing set user ID (SUID) programs, (5) TCP/IP stack hardening, and (6) automated hardening scripts.

What is the typical packet sequence for closing a TCP session?

The standard way to close TCP sessions is to send a FIN packet, then wait for a FIN response from the other party.

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