Jul 03, 2017 · TCP and UDP aren’t the only protocols that work on top of IP. However, they are the most widely used. How TCP Works. TCP is the most commonly used protocol on the Internet. When you request a web page in your browser, your computer sends TCP packets to the web server’s address, asking it to send the web page back to you.
No way! If TCP was used, Everyone will confirm my packet! So item two to discuss is reliability.This muddies the answer.UDP is awesome. When people say UDP is unreliable, they don't mean its bad. all they mean is the packet for UDP multicast does not need to hear a response, to confirm delivery. Most common are the mentioned TCP (every port), UDP (every port) and ICMP. Naturally some traffic might be controlled by the ASA differently and a simple ACL might not do the trick. Might have to for example enable or disable inspections on the ASA. - Jouni Aug 09, 2006 · The others have a good idea of what TCP and UDP mean, but It would be helpfule to understand what a port is before you try to undertand the difference between TCP and UDP ports. Think of this way. Computers on the internet communicate through IP address as a standard way to identify themselves as particular computers i.e. www.yahoo.com is 209 udp 138 Seeing those ports should not alarm you and it is not uncommon to see other ports listening as well. You should pay more attention to the program names that are listening on the Internet
Mar 14, 2012 · TCP does not supply a direct connection, but emulates one, and that involves sending lots of unnecessary data, and resending lots of potentially large packets(for multiplayer games. Most other services need that structure). And mixing UDP and TCP isn't a solution, because TCP has a tendency to greatly increase packet loss in UDP.
UDP, on the other hand, does lose some of the data packets, but these losses have very minor impacts on the overall quality of the audio/video output (a few seconds of silence and/or black/frozen screen at maximum). Therefore, it is logical for VoIP providers to use this type of protocol – especially that most of your other internet traffic Hello, i am reaching out to the Netgear community today to ask you guys what i should do about what you see below. I have encountered Dos attacks before, but i have never encountered a TCP/UDP Chargen before. Please help ASAP as this attack keeps repeating every time i get on my computer. Thank you guys for your consideration.
1) Transmission Control Protocol (TCP) which it’s a Connection Oriented Protocol, 2) User Datagram Protocol (UDP) which is Connectionless Protocol. These protocols are the backbone of Segmentation process. TCP and UDP are the most famous protocols at Transport Layer, they determine the method how IP packets at the next Layer should be delivered.
Re: In extended access-list does ip mean include both tcp and udp and other protocols ? so lets say for example i do deny ip host 192.168.1.3 any does that mean it will block icmp, tcp , udp and others ?