Questions tagged [network]

a network allows computers to communicate and exchange data

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1answer
33 views

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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2answers
45 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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2answers
43 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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0answers
19 views

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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1answer
170 views

A problem in building a private network using Ethereum

There is a problem in in building a private network using Ethereum. Geth version : 1.8.3 stable OS & Version : windows 10 My scenario is as follows: The genesis block is as follows { "...
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3answers
3k views

How do Ethereum mining nodes maintain a time consistent with the network?

We have established that the timestamp on a parent block has to be before the timestamp of a child block in Can a child block have an earlier timestamp than the parent block?. How are differences in ...
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0answers
23 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
46 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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0answers
31 views

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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1answer
59 views

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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1answer
84 views

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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1answer
60 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
440 views

Connecting to remote Geth client from AWS hosted server via web3 needs fix

There is a general problem that is affecting most everyone who tries to initialize AWS hosted servers with a remote Geth instance. It would be great to have documentation to address a fix or at least ...
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1answer
76 views

Private network with limit supply

I'm just wondering if is possible to create a private network (Not development) with this characteristics: Max supply One account has all the supply already Nodes/peers can't mine Gas cost is always ...
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2answers
29 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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32 views

Ethereum Private network . Commit new minning work stuck

I am trying to build an ethereum private network. Here is my genesis.json file { "config": { "chainId": 15, "homesteadBlock": 0, "eip155Block": 0, "eip158Block": 0 }, "nonce": "0x0000000000000042", "...
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1answer
51 views

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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0answers
20 views

How are UUIDs assigned in ethereum

I am learning about blockchain and P2P in general. I know ethereum uses a distributed hash table for node lookup (kademlia) that maps UUIDs of nodes to their addresses. I am curious about how the ...
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1answer
425 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
31 views

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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2answers
220 views

How does reputation work in the Ethereum P2P network?

Nodes in the Ethereum P2P network assign their peers reputation in order to keep track of how well they behaved in the past and evaluate whether it would be preferable to disconnect from them. What ...
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0answers
23 views

Is it dangerous for my geth node to accept connections from random IP addresses? [duplicate]

I am running a geth node with a number of RPC and WS options available. In looking at the logs, I am seeing attempted connections from random IP addresses. They look as follows: TRACE[02-17|22:19:32....
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1answer
624 views

I'll never reach final block updating with geth, it's too slow

I´m updating my ethereum blockchain with geth. But I feel it is going really slowly. Each block is done in 1 minute, sometimes 30 seconds, but at this pace I'll never reach the final block, ...
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1answer
178 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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2answers
167 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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1answer
73 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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0answers
20 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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0answers
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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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0answers
38 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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1answer
18 views

How to program ethereum's infrastructure?

I would like to create an ethereum network with some changes in the infrastructure, for example - adding some encryption, change the proof of work function and more. Do you know some environments ...
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2answers
6k views

Does network latency significantly affect mining rewards?

I have a slightly flakey internet connection (no good providers in the area). I can stream at reasonable speeds (Megabits) but there is a certain amount of jitter in the packet latency. Mining is ...
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1answer
26 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
104 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 ...
3
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1answer
449 views

Setup PoS private network

I need to setup PoS private network with Casper and I cant find any official manual how to do it. There are only couple links which uses this git repo: https://github.com/karlfloersch/docker-pyeth-dev ...
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1answer
33 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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2answers
254 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 ...
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0answers
46 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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5answers
9k views

connect ethereum wallet(or mist) to to ethereum local private network

I would like to create a private network for test. And I would like to connect to this private network from commandline client or Ethereum wallet/mint. I have created a private network as below. ...
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1answer
283 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
451 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
31 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
234 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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1answer
46k views

Which TCP and UDP ports are required to run an Ethereum client?

The geth CLI options suggest that per default the client listens on TCP port 30303. This page, additionally suggests that UDP port 30301 is used for node discovery. Is this all that is required or ...
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5answers
1k views

How to prevent being blacklisted for running an ethereum client?

I'm running a dedicated server at one of the biggest hosters in Germany. This server serves the network with an Ethereum supernode, running parity 1.1.0 in archive pruning mode and allows up to 1024 ...
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0answers
101 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 ...
0
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1answer
364 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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0answers
110 views

Proof of Authority Finalisation

Are there uncles/orphaned blocks in a PoA-based network? How do we reach consensus which is the real chain if the chain is splited/ we have a fork? Do you know any possible attack vectors on such ...
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1answer
35 views

Is it possible to use low mining complexity to remove some certain transaction in the past?

I have a question that has concerned me for a long time. It relates to the security and reliability of the blockchain applications. Let's assume I want to build an application that uses Ethereum or ...
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1answer
756 views

How to synchronise Ganache-CLI accounts with Ganache-UI?

When I launch ganache-cli for Port 7545, it will create 10 accounts by default. ganache-cli -p 7545 However, when I then open the Ganache-Desktop-App, it will show different accounts and the ...
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2answers
44k views

Why is my node synchronization stuck/extremely slow at block 2,306,843?

Using macOS 10.12.1 with Ethereum Wallet 0.8.7, nodes are connected but Sync doesn't even start. Stuck at block 2,306,843. What can I do? Please keep in mind, I am neither a coder nor a tech geek.