Questions tagged [network]

a network allows computers to communicate and exchange data

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How to get events from a contract deployed on different network? - Web3

I have contract A in Avalanche FUJI C-chain. When I'm on C-chain testnet, I can get events from A using getPastEvents() in web3.js, but when I change the testnet (for example, to Goerli), I receive an ...
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Is there a need of network additional security measure

I didn't find information about the risk and threat of being connected to the Ethereum network / internet. I was wondering if we would need additional measures such as a firewall, proxy to protect ...
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Fictitious use case to send confidential data

I am designing the network architecture of a Fictitious agency that needs to send confidential data. So my questions are: Is it possible to send images through the Ethereum network? I've read that, ...
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Can I use a subnet mask with ws.origins?

I am trying to run my own geth node, as I am interested in monitoring the txpool's pending and queued transactions. I plan to mostly use a websocket connection from the same server, but it's possible ...
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Throughput and Latency of Private Ethereum Network

How do I calculate Throughput and Latency of a private Ethereum network that I have set up locally on my computer? I tried the solution given in Measuring transaction latency and throughput in a multi ...
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1answer
146 views

Truffle test doesn't connect to Ganache

I'm using Truffle and Ganache for my development environment. Using the truffle console or truffle external scripts everything works fine, but truffle test does not seem to be connected to Ganache: ...
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1answer
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RPC connection fails

I launched my geth with those parameters : sudo geth --syncmode "light" --cache=2048 --datadir /mnt/ssd/ethereum --pprof.addr 0.0.0.0 --pprof It's running on a ubuntu server 20 on a ...
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Distribution of mined Blocks, its verification and the Longest Chain Rule

Hi all I am in need of a clear understanding of the distribution of mined blocks, the verification mechanism and the longest chain rule. How is a freshly new mined Block being distributed to the ...
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25 views

Rough estimates of transaction propagation latency?

Does anyone know any rough numbers for transaction propagation currently for the Ethereum network? I.e. how long does a submitted transaction take to reach 50%/95%/etc of nodes? Thanks!
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Firewall blocks interactions with geth peers and it is not clear how to fix it

Input: geth on port 30303 port 30303 forwarding is enabled on router uPnP is disabled on router UFW firewall is enabled with the following rules: $ sudo ufw status verbose ...
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60 views

How large network traffic is expected for Ethereum 2.0 Staking node?

Would be interested what can be rough estimated network costs of running full staking client. For staking it's currently required to run: Eth1 node (Not counting initial sync which require initial ...
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789 views

What is the computing power of the Ethereum network in FLOPS?

The aproximate computing power of current Bitcoin network in terms of FLOPS (FP32) has been estimated at about ~80,000 exaFLOPS and being aware of the limits of the analogy because of the widespread ...
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108 views

Why does ip address value differ in the enode url from the info output of a geth node instance to running admin.nodeInfo.enode in the js console?

I'm in the process of creating a private Ethereum network. I am able to successfully connect nodes on my local machine but unable to connect nodes in my LAN or outside my network. When I run a geth ...
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1answer
90 views

What happens if two different states of smart contract conflict?

I'm newbie studying blockchain and Ethereum. While I'm studying, I've got a question. What will happen in the case of conflict of two different states on smart contract, e.g. from the network ...
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Ethereum peer to peer load balancer

Is there any existing TCP load balancer product that is enode aware?
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1answer
121 views

Where are “pending” (newly submitted) transactions stored?

First of all, my terminology may be off, sorry about that. I understand how a blockchain holds data on transactions that have been "accepted" (i.e. a block has been mined). But if I decide to ...
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1answer
79 views

What is Fuse.io for?

I read that Fuse.io is a DPoS blockchain on the top of Ethereum, apparently to improve payment performance. What is Fuse? What is its purpose? If it is on the top of Ethereum, how payments may be ...
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1answer
43 views

How different clients, with different implementations communicates through the network?

sorry for the dumb question, but i'm wondering how different Ethereum clients, like for example Trinity, Geth, or Parity, written in different languages, communicates over the network. I did not found ...
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2answers
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Quorum permissioned network

How can I permission a quorum network? Imagine I have 3 nodes in my network and I install another node in my friends house. How can I prevent my friend add more nodes to my quorum network? thanks
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Strange points of Casper algorithm

Currently, Ethereum developers are developing Casper Algorithm for Ethereum 2.0. According to their proposal, some validator are chosen randomly but validators has permanently authority to verify ...
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33 views

How to copy the data from a running private network to another

I have two seperately running private ethereum networks,i want to copy the data from the first private network to the second one without stopping.I have tried multiple ways but was not successful.I ...
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1answer
48 views

Is there a use case of keeping 2 chains?

I know that Ethereum was forked 2 chains due to DAO hacking. so Ethereum Classic was borned at that time. 2 chains are distinguishable by different chain id. I had a strange idea, a malicious miner ...
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1answer
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Other networks built off of Ethereum?

It looks like if I wanted to I could have the same private and public key for: Ethereum, Ethereum Classic, Tomochain, Vechain, Wanchain, and Aion networks because they were all built on a copy of ...
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1answer
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About Ethereum testnet 61 (Ethereum Classic)

I know that Ethereum was forked 2 chains due to DAO hacking. so Ethereum Classic was borned at that time but 2 chains are equal technically. Network number is different between Ethereum(number is 1) ...
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What is the scalability limit for POA Ethereum (number of nodes)?

Tried to find any benchmarks what is the maximum number of nodes for Ethereum PoA network. When does a network latency become crucial? Looking for any sources / empirical benchmarks.
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How to connect a dapp on private ethereum network [closed]

I created a private ethereum network with 3 nodes kai i have also created a dapp. How i can connect my dapp with my private network? Thank you!
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which port I use when I want to connect remix to my local quorum network?

I want to deploy a smart contract on my local network. I executed a local node via PRIVATE_CONFIG=ignore nohup geth --datadir ./Node1/new- node-1 --nodiscover --verbosity 5 --networkid ...
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48 views

is account nonce network dependent?

In Ethereum, does Account nonce depend on network? I mean for same address on different network, will there be different nonce?
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How do I make my private Ethereum network public? [closed]

So after a lot of reading I was able to make my own private Ethereum network, most of the readings I did showed me how to test it privately, but none of them actually explained how to make it public, ...
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302 views

Deliberate Slashing: Don't slashing and leaking incentivize DDOS attacks on smaller nodes? Won't this centralize POS more than POW, even?

In Ethereum's proposed proof-of-stake algorithm (POS): A traditional node operator can't host a node themselves (e.g. on a home network), someone could just DDOS their node to bring them offline. ...
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1answer
202 views

How to gather all addresses of nodes in a private network?

I am currently learning core-development in go-ethereum. I am a little weak with networking, RPC and connections. I am trying to write a function in my own consensus mechanism that gathers all ...
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406 views

Running 'parity account new' - is the generated account suitable for all networks (mainnet, ropsten, kovan, etc)?

From a command line, I run parity account new. I am then asked to enter a password (twice), and an account-address is printed. In addition to that, a JSON file is created. Finally, I use this ...
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What possibly could go wrong if I leave my private blockchain node 30303 port open to public? [duplicate]

I have the following setup: All the nodes inside my cluster are talking to each other via 30303 port. When I want to talk to them, I'm using a Geth light client via HTTP JSON RPC port 8545. Only the ...
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22 views

Techniques to count nodes [duplicate]

What are the different techniques to count nodes in ethereum? ethernodes.org has a count of nodes, how can we verify if that is true ? Are there any other techniques to do similar counting. Can you ...
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83 views

Possibility of detecting MAC address spoofing in Ethereum network?

The paper that has been published here: https://dl.acm.org/citation.cfm?id=3282283 proposes a consensus algorithm based on distributed voting process as an alternative to proof-of-work based ...
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2answers
301 views

Running Geth without inbound connection

I have a simple question. Should I let my server always open inbound connections when using Geth? I want to keep my server secure by restricting inbound connections. Is there a way to use Geth ...
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1answer
37 views

Could give ethereum network upgrade solutions?

As we known, the ethereum have soft and hard fork to upgrade network. If we modify the private ethereum code, how to notify other nodes to upgrade their geth? What if they do not upgrade the network? ...
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1answer
178 views

Does each node dynamically connects to its connected nodes' peers?

I want to give example from private Ethereum network which has 5 nodes, but we can generalize it for much larger network that has thousands of nodes. On the figure double arrows represents connected ...
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1answer
50 views

How can nodes fail

I am writing plans to support a parity blockchain cluster and need to determine guidelines for the DevOps team. What are the ways in which nodes can fail and back practice for handling these?
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59 views

Full archiving nodes

Does anyone know how many full archiving nodes are there in Ethereum network. I know this site https://www.ethernodes.org, but there is no way to discover which node is full node and wich one is full ...
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1answer
669 views

Connecting to remote node

I have created a node in my laptop. Now I want my friend (from his home) to connect to the node I created. We are part of two different networks. How can these two nodes be connected in ethereum. What ...
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1answer
1k views

Result of calling web3.version.getNetwork() from browser-side code is always undefined?

I'm trying to get the network ID from the Web3 object on the client side (i.e. - while running Javascript code in the browser). I have code that confirms that the object exists and it does. I have ...
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1answer
35 views

Verifiyng value in contract

Imagine a network where only specific nodes have ether and can run contracts, and there are other nodes, lets call then V, that only want to read the content produced by the other nodes. Is there a ...
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2answers
354 views

what is the protocol used in commuinication between ethereum blockchain nodes?

Let's say that we have many blockchain nodes managed by parity clients. what is the protocol used in communication between those nodes?
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166 views

Is it necessary to have the UDP port open for an Ethereum private net?

An Ethereum node requires both TCP (listener) and UDP (discovery) port (usually 30303) open and reachable by other nodes. My question: is it possible to run a private network with my node only ...
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1answer
499 views

Set up Custom nodes in Quorum

I have gone through the https://github.com/jpmorganchase/quorum-examples and it works good and fine. Now I want to make my own custom node Quorum Network what is the best method, tool or any guide ...
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1answer
487 views

Getting number of value transaction of a contract in the last 24 hours

I'm would like to get the number of value transactions (either tokens deposit or withdrawal) for a specific contract (I got its address) in the last 24 hours and also the total so far. Is it possible?...
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2answers
147 views

How to listen to inter-node communications regarding transactions

If I run a full node (say geth) in the Ethereum network, then the way things work out is that every node releases/ announces new transactions as they receive new ones. I'm assuming that my node must ...
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2k views

Is it possible to batch transactions together?

In bitcoin-land, it's advised to batch transactions to send them to (a) reduce fees and (b) reduce network congestion. Does the same apply to ethereum land? It seems that the to can be only one ...
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529 views

How does ethereum bypass the NAT

I wonder, since Ethereum is based on a decentralized p2p network, how does it get through the NAT Firewall? There is no server Ethereum can connect on, so there has to be a way for nodes to accept ...