Networking Protocols

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Networking software modules are interfaced with a framework implemented on the machine's operating system that implements the networking functionality of the operating system. The best known frameworks are the TCP/IP model and the OSI model. Systems typically do not use a single protocol to handle a transmission. Instead they use a set of cooperating protocols, sometimes called a protocol family or protocol suite.[9] Some of the best known protocol suites include: IPX/SPX, X.25, AX.25, AppleTalk and TCP/IP. Other protocols indirectly related to networking include the hypertext transfer protocol (HTTP) and its related technologies, Dynamic Host Configuration Protocol (DHCP), Domain Name Server (DNS) and other Internet protocols.

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I am looking to upgrade my router to a router that can handle a higher volume and faster, but the number is confusing me a little.

I currently have a Ubiquiti ER-X and looking at the ERPoe‑5, I compared all the specs [RAM, Storage size, 1518 byte packets] and the ERPoe‑5 is higher or same, except for 64 bytes packets which the EX-R the throughput and pps, same is with the CPU frequency on theses 2 the EX-R is higher [EX-R throughput 957 Mbps pps 1,400,000 and the ERPoe‑5 throughput 490 Mbps pps 730,000, CPU frequency ER-X 880 MHz ERPoe‑5 500 MHz both CPU core count 2]

Please help.
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HTML5 and CSS3 Fundamentals
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HTML5 and CSS3 Fundamentals

Build a website from the ground up by first learning the fundamentals of HTML5 and CSS3, the two popular programming languages used to present content online. HTML deals with fonts, colors, graphics, and hyperlinks, while CSS describes how HTML elements are to be displayed.

I had this question after viewing Stuck in INIT/DROTHER.

I have the same problem? OSPF INIT/Drother between Cisco Switch L3 and Cisco Firewall ASA?
I checked everything all the configuration.It looks good however it doesn’t work? I don’t really understand why?
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Hi Experts,

     I want to configure elasticsearch to a new IP address.  Currently, it is on a dev machine.  But I want to configure to a new IP address.

currently, in my elasticsearch.yml the current settings are

network.host:0.0.0.0

path.data : /var/lib/elasticsearch

path.logs: /var/logs/

inside /var/lib/  elasticsearch is link file to links to /mnt/elasticsearch

I want to install elasticsearch to new machine.  machine ipaddress is eg., 5*.25*.22*.1*,  

My questions are,

Do I have to install elastic search on this new IP address,

or can I set this new IP address as network.host path in the existing dev machine?

or do I have backup and restore to the new ipaddress?

Please suggest how to configure?

I had tried changing the network host to the new IP address, and copied elasticsearch folder to the new machine and set the path to path.data and I had set path.logs to new machine folder paths and restarted elastic search from the existing dev machine.

elastic search failed to start.

Please suggest how to configure the elastic search on this new machine.

With many thanks,

Bharath AK
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Hi,
The folder is shared properly and why can't I refer to it like

\\182.173.77.208\shr2
0
i have windows 2016 server
I have data coming in on port 3299
When i hits the server i need to remap it to port 9013 as there is an app on this server which is listening on this port

is this possible/
There is not router, the server sits directly on the internet so it needs to be done it windows
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Hello,

If I am running a tcp ping tool on a virtual windows server that is hosting my website also, would it be possible to use the tcp ping tool to ping the visitor of my website to record the latency/round trip time without the stateful firewall blocking it?

The issues I came up with would be that all/most home-based firewalls are stateful firewalls, tcp communication can use only one IP and one port(if I am correct?) per application (website in this scenario). So I would have to have the tcp ping application listen in on the port using another IP, or open a new port (and IP) to communicate with the same website user. So my second question would be: would the stateful firewall block this communication since it is from a different port and/or IP even though it's on the same web server?
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Run connection test "telnet port 53" failed, is the 23 or 53 port connection issue? How to verify?
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I am having issues in a MPLS VPNv4 BGP setup where the CE is not receiving any BGP routes from the PE.

PE2 Cisco BGP config:
router bgp 1
 bgp log-neighbor-changes
 neighbor 1.1.1.1 remote-as 1
 neighbor 1.1.1.1 update-source Loopback0
 !
 address-family vpnv4
  neighbor 1.1.1.1 activate
  neighbor 1.1.1.1 send-community both
 exit-address-family
 !
 address-family ipv4 vrf CUST-1
  neighbor 10.10.20.2 remote-as 200
  neighbor 10.10.20.2 activate
 exit-address-family
!

CE2 Cisco BGP config:
router bgp 200
 bgp log-neighbor-changes
 redistribute connected
 neighbor 10.10.20.1 remote-as 1
 neighbor 10.10.20.1 soft-reconfiguration inbound
!

If you need more info please let me know (I can attach the full config if you want).
CE2_startup-config.cfg
PE2_startup-config.cfg
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How does a website (or podcast) send out notification of updates?

I have subscribed to a sample podcast and see that I do get alerts (upper right corner of screen) on my MacBook. I have not yet verified those alerts only show up when I have Chrome opened, but that because I always have Chrome open.

Here is what I see under Settings as the Allowed sites.

Screen-Shot-2018-11-26-at-11.48.02-A.png
What is port 443?

Does this mean my port 443 is open to alerts from these two websites?

Please let me know how this works, since I am considering using this for my podcast. Or, if you give me the name of this type of communications, I can look for solutions which I can adopt to have this behavior.

Thanks.
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picI have router on a stick fa0/0.10 10.10.10.1/30 on R1 and an IP address assigned to R2 f0/0 10.10.10.2/30. I am trying to understand why I cannot ping R2 from R1?

pic
R1 config:
interface FastEthernet0/0
 no ip address
 duplex full
!
interface FastEthernet0/0.10
 encapsulation dot1Q 10
 ip address 10.10.10.1 255.255.255.252
!

Open in new window


R2 config:
interface FastEthernet0/0
 ip address 10.10.10.2 255.255.255.252

Open in new window

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Hi

Please help me to change the time on my OXE WBM switchboard
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Wonder your folks opinion.  How do you approach this questions from executives.  
 "what do you think is better 74Mb DSL or 60Mb cable?"  :)
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Regedit \ RouterManager can be configured ?

Regedit \ TCPip6 every modified would be return to previous state, as motherboard changed, DUID mac info inside needed to , RFC3315 required .

When the OEM vga driver latest supported driver updated to Nov. 2018, whatever way tried, the computer Driver Manager can not see the latest date of the offering ?
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What's the best way to setup Cisco 3850 switches by copying configs over the new one. 2 identicals are already in place.  
The additional will server same functions as access switches.
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I have a wireless guest network and I'd like to test to make sure that it cannot get into my 10.10.0.0/16 internal network. Excluding ping sweep utility, what other tools can I use to do some sort of penetration testing? Thanks
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Meaning of Port number in Show spanning Tree

in the output of the command below  I see:

 Port        1 (Ethernet0/0)

I wonder what Port 1 means?  I thought the port is the same as interface.

Thank you


SW1#sh spanning-tree  vlan 20

VLAN0020
  Spanning tree enabled protocol ieee
  Root ID    Priority    24596
             Address     aabb.cc00.0400
             Cost        200
             Port        1 (Ethernet0/0)
             Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec

  Bridge ID  Priority    32788  (priority 32768 sys-id-ext 20)
             Address     aabb.cc00.0100
             Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec
             Aging Time 300

Interface           Role Sts Cost      Prio.Nbr Type
------------------- ---- --- --------- -------- --------------------------------
Et0/0               Root FWD 100       128.1    Shr 
Et0/1               Altn BLK 100       128.2    Shr 

SW1#

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How STP influence the Traffic

on the diagram below, PC2 is connected to  Switch SW3 that has a blocked port on the link to SW1. Now Traffic from PC2 to PC1 will it go from SW3 to SW2 then to SW1 or it stiil can go straight from SW3 to SW1 then to PC1

Thank you
stp
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Please see the below in asr1000 trying to establish bgp neighbor. Do we have to use address-family ipv4? Thank you

router bgp 22
 bgp log-neighbor-changes
 neighbor 55.66.77.8 remote-as 33
 !
 address-family ipv4
  neighbor 55.66.77.8 activate
  neighbor 55.66.77.8 soft-reconfiguration inbound
  neighbor 55.66.77.8 prefix-list ine in
  neighbor 55.66.77.8 prefix-list out out
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DR(designated router) is for sending source message to receiver. I am not sure DR is located between source and RP, or between RP to receiver? Anyone can give some idea? Thank you
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Rowby Goren Makes an Impact on Screen and Online
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Rowby Goren Makes an Impact on Screen and Online

Learn about longtime user Rowby Goren and his great contributions to the site. We explore his method for posing questions that are likely to yield a solution, and take a look at how his career transformed from a Hollywood writer to a website entrepreneur.

Hi, i have problem whith download Decrypting Cryakl from https://www.experts-exchange.com/articles/31579/Decrypting-Cryakl-1-4-0-0-1-4-1-0-FAIRYTAIL-Ransomware.html  (and decryptors.blogspot.com). Can help me whith download application?
I want test on CL 1.5.1.0. I have one pc whith this encryptor. I know that he was installed through the RDP, and have some files and log's. Maybe you decryptor can help.
It will then be possible to transfer the information to others.

Thank you.
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What if only get an gateway IPv6 is fe80:: by ISP modem connected when, it offering dhcpv6 acclaimed ?


ISP using an Enterprise Type of DHCPv6 service for some clients only , would be resumed or reasonable for the "unknown companies" associated with my ethernets mac address in the ipv6 addresses ?



Sincerely

BleuOisou
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Interface Multilink Vs Interface Virtual Template on Cisco Routers

I would like to know the difference between using the commands :
Interface Multilink Vs Interface Virtual Template

it looks like they achieve the same thing.

Any idea ?

Thank you
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Dear Experts

We have the application server ( CRM system web-based ) running on windows 2012 R2 which is deployed on premises behind the firewall. we have to configure CRM application to send mails to the customers through office365 email account hence network team has provided access only to smtp.office365.com and on port 587 and denied rest of the outbound or inbound access i,e no http or https access to this system.  
1. The CRM application is not able to send mails when the http/https is disabled for this system.   Through the CRM workflows we are able to send the mails out only when the http and https is allowed to this system at firewall .
2.  we are not able to convince the network team as they say we allowed outbound smtp.office365.com and 587 the issue would be at application side, they are asking explanation on why http/ https required,
can you please help me to understand on what all ports or access to be enabled at firewall for this system/server in additional to smtp.office365.com and port 587 in case of  INBOUND and OUTBOUND so that we can communicate to the network team please.
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I want to check my network and see if certain ports and protocols are already allowed through the firewall, is there a windows  tool that I can use to verify this before I poke on the firewall?

Thank you,
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I have cisco catalyst 4507R-E that has to be replaced with below:
1. New Cisco catalyst 9407R switch with 2 supervisor modules, 1 24 sfp+ port module and 1 48 1Gig UPOE ports.

What are the recommended steps or the best way to migrate from 4507R-E to 9407R.
0

Networking Protocols

11K

Solutions

16K

Contributors

Networking software modules are interfaced with a framework implemented on the machine's operating system that implements the networking functionality of the operating system. The best known frameworks are the TCP/IP model and the OSI model. Systems typically do not use a single protocol to handle a transmission. Instead they use a set of cooperating protocols, sometimes called a protocol family or protocol suite.[9] Some of the best known protocol suites include: IPX/SPX, X.25, AX.25, AppleTalk and TCP/IP. Other protocols indirectly related to networking include the hypertext transfer protocol (HTTP) and its related technologies, Dynamic Host Configuration Protocol (DHCP), Domain Name Server (DNS) and other Internet protocols.