Questions tagged [firewalls]
The firewalls tag has no usage guidance.
13
questions
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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 ...
- 13
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vote
1
answer
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Server firewall is blocking the Web3.js connection in NODE
My Centos server has running the "ConfigServer Security & Firewall" and its blocking the Web3.js connection with Ethereum node. The functions calls returns: "Error: Invalid JSON RPC ...
- 703
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298
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Opening GETH Websocket to Specific IP (remote connection)
I'm trying to connect to a GETH node of mine from a different location. Currently I'm using the following settings:
geth --syncmode "fast" --maxpeers 100 --cache 32000 --txpool.pricebump 1 ...
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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 ...
- 31
0
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1
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unable to connect to TestChain by Code
I am new at Ethereum and intended to connect to a test chain by c#. my code runs greatly on my old laptop win7, but on newer one Win10 it just waits forever. this is my code. has anyone any idea?
...
- 123
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2
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464
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Ethereum Node on Azure Virtual Machine (windows) remote access
I've a Windows Server VM on Azure where geth is running quite good (no mining, just node).
Now, the "start command" is:
geth --rpcapi "eth,web3,db,net,personal,admin" --rpcaddr "10.0.0.4" --port "...
- 203
3
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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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4
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How to determine if ISP is blocking Ethereum traffic
My "Ethereum Wallet" from ethereum.org used to connect to several peers. A while ago I noticed it was taking longer and longer to sync and the number of peers dropped. It got worse, and seldom ...
user11495
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1
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Geth not synchronizing - Firewall issue?
I am trying to sync an ethereum node on my computer, which is connected to a university network.
However it seems that geth is not finding any peers, same thing with mist. It looks to me like the ...
- 373
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Port requirements for a Full-Node?
Do I need to open BOTH TCP and UDP 30303 on my router? Or only TCP?
EDIT: I am also unclear if the UDP protocol should be opened on Port 30301 instead (as discussed on this page: https://github.com/...
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Good iptables rulesets for IPv4 and IPv6 in Geth Ethereum Node
Currently I'm using the following iptables rules for my remote (server) geth node:
V4
*filter
# Allow all loopback (lo0) traffic and reject traffic
# to localhost that does not originate from lo0.
-...
- 1,378
3
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1
answer
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DwarfPool mining: Blockchain-syncing and firewall settings
Some questions related to this DwarfPool (ETH) mining command:
ethminer -F http://eth-eu.dwarfpool.com/0xb...
Is it correct that...
ethminer does not download the blockchain, it only creates DAG ...
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64
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1
answer
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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 are ...
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