Do you have any EVM, MetaMask and WEB3 support on NEAR protocol?
It does, Aurora is a smart contract on NEAR Protocol with an EVM inside. It also provides a full ETH RPC interface and has ETH as a base token. The whole idea is to just change the name of the network to Aurora Testnet or Mainnet in the existing ETH smart contract and deploy. Of course you can also add Aurora to MetaMask easily. Either manually, or by clicking the connect MetaMask button while on the Rainbow bridge.
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I was using JDBC to connect to IBM DB2 AS400 for iSeries in my Rails Application. Now it looks like I will have to move to use the ibm_db gem.
https://github.com/ibmdb/ruby-ibmdb
I attempted this with irb first and used the following in a command like:
require 'ibm_db'
conn=IBM_DB.connect("DATABASE=ABCUATDT;hostname=TEST.HERE.COM;PORT=9471;SECURITY=SSL;PROTOCOL=TCPIP;AUTHENTICATION=SERVER;UID=username;PWD=abc1234;", "", "")
This gives me the following error:
SQL30081N A communication error has been detected. Communication
protocol being used: \"SSL\". Communication API being used:
\"SOCKETS\". Location where the error was detected: \"\".
Communication function detecting the error: \"sqlccSSLSocketSetup\".
Protocol specific error code(s): \"414\"
I then try without SSL:
conn=IBM_DB.connect("DATABASE=ABCUATDT;hostname=TEST.HERE.COM;PORT=446;PROTOCOL=TCPIP;AUTHENTICATION=SERVER;UID=username;PWD=abc1234;", "", "")
SQL30082N Security processing failed with reason \"15\" (\"PROCESSING
FAILURE\"). SQLSTATE=08001 SQLCODE=-30082"
These ports and username/pw etc all work fine with JDBC, but not using the ibm_db gem.
EDIT: I tried using different ports, I know that 8471 is open for non-SSL and 9471 is open for SSL. I decided to skip SSL altogether and I started using the db2cli on my Mac OSX.
db2cli execsql -connstring "database=ABCUATDT;hostname=TEST.HERE.COM;port=8471;uid=username;pwd=abcd1234"
This just hangs and doesn't give me a prompt to write SQL:
IBM DATABASE 2 Interactive CLI Sample Program (C) COPYRIGHT
International Business Machines Corp. 1993,1996 All Rights Reserved
Licensed Materials - Property of IBM US Government Users Restricted
Rights - Use, duplication or disclosure restricted by GSA ADP Schedule
Contract with IBM Corp.
I then tried the python library AND the DB2 CLI - both of which gave the same errors. Is there something needed to be changed at the DB2 side?
Why would it work for JDBC but not for the IBM ODBC driver?
Speak with your i administrator(s) or management team. Stackoverflow may not be not what you need right now. When asking questions, it's smart to fully detail your environment for obvious reasons, if necessary speaking with relevant persons at the client site to establish the facts before asking questions.
Find out whether there is a Db2-connect server (separate purchase) already installed on the i-series. The regular Db2-client for MAC can then communicate with CLI/ODBC via that product which does the required protocol conversions while acting as a gateway.
Find out if there is a Db2-connect server already deployed anywhere that runs on Windows/Linux/Unix that you can use (it does the required protocol conversions while acting as a gateway) once configured with connections for i-series. The regular Db2-client for MAC OS X can then use that as a gateway for CLI/ODBC to i-series.
IBM does not currently sell "IBM i access" for MAC OS X afaik, which offers the CLI/ODBC interface and does not require a Db2-connect server. That product is available for Microsoft Windows and Linux platforms. Those platforms may offer you an alternative if MAC OS X is currently unsupported.
The regular Db2-driver from IBM for MAC OS X requires for CLI/ODBC a Db2-connect server for the protocol conversions with i-series, so db2cli tool will not work without a Db2-connect gateway.
Other non IBM vendors may offer solutions in this area.
Another possibility is to use a ODBC to JDBC bridge, running on your MAC OS X, which would reroute ODBC calls to your working jdbc driver. You might research that.
I'm trying to connect to Google Cloud SQL from my machine (Ubuntu) using this command:
mysql --host='Public IP' --user='' --password
However, I'm getting this error:
ERROR 2003 (HY000): Can't connect to MySQL server on 'Public IP' (110)
I need any help resolving my issue.
First you need to let the Cloud SQL instance which IP addresses it can accept. You can do that without SSL by following the instructions here. However, to be more secure, I would recommend you using SSL. More info on that here.
Probably the easiest way to securely connect from your local machine to a public ip of a cloud SQL instance is to download and use the proxy, following the instructions here:
https://cloud.google.com/sql/docs/mysql/connect-admin-proxy
What you have to do is add a network to the public ip section, under the connections tab after selecting your Cloud SQL instance.
See Cloud SQL Connections Tab here
So, for the name input you put firstname-lastname kind of thing to denote whose ip it is. Then input your IP address 1.2.3.4/32 into the network input.
After doing so and saving you will be able to connect.
Yes, you can add SSL and use certificates. That is all best practice and what should be done for a production stack. But if this is just getting off the ground and in rapid development, that's all you need to do in the beginning.
I want to control my raspberry pi with my Google Home at college, but everything I find involves a server and opening a port which I can not do on my schools network.
Is there another way I can do this?
The Google Home has no way to directly control other devices on the same network or through other wireless protocols. Everything goes through an Internet-based service and expects to communicate with devices via a server-based proxy. How that server communicates with the device is up to the developer.
Depending on your needs and capabilities, you do have a few options.
One option, for example, is to use a tool like ngrok to create a tunnel between the device itself and a service run by ngrok on the public Internet. Calls to the public https address are sent to a service running locally on your device, and you can handle it accordingly.
Another is to have your device connect to a server and listen for command changes, and then execute those changes. If you don't want to run a server, you can even use something like Firebase - have your device listen for changes on the real-time database (which can use the HTTPS port to communicate as a client, so you don't open anything) and have something like a Firebase Cloud Function act as the webhook for your Action.
Go through this blog post: http://nilhcem.com/android-things/google-assistant-smart-home
You will have to set up a OAuth server but as #Prisoner said you can use ngrok to tunnel the device to internet, BUT I would recommend using "localtunnel" as it provides a free static url and the set-up is also easy. NO Port Forwarding is required with this method.
More info on localtunnel setup:-
How to generate fixed url with ngrok
Moreover you need to activate the OAuth server only once for account linking & than you can close it.
The simplest way I can think of is to expose your Pi to the internet (using port forwarding, ngrok, or whatever) then set up an IFTTT Google Assistant trigger to invoke a webhook which points to your exposed Pi.
Recently i decided to move my database from inside my server machine to the MongoDB Atlas service.
Atlas provides a IP Whitelist feature which i use to remotely connect to the database cluster.
Should i plug my server application to Atlas using this feature?
What happens if my server IP changes? Is it secure?
For a general information on how to connect to an Atlas deployment, please see Connect to a Cluster
For connecting using a driver, please see Connect via Driver. There is an extensive list of examples using all of the officially-supported drivers.
As mentioned in the Prerequisites section, you need to use SSL/TLS and IP whitelist to connect to your Atlas instance. This whitelist would need to be updated should your application server's IP changes.
The whitelist provides an additional security layer in addition to your username/password, since this list will essentially reject any connection not originating from a known IP address. It is strongly recommended to utilize this whitelist, and arguably the effort required to maintain the whitelist is comparably small to the security advantages it provides.
We have acquired a 4 channel GSM Gateway, model GoIPx4-G610 (the manual is titled "GoIP Series SIM Card for GSM Voice Gateway - GSM VOIP Gateway").
We are looking to develop a custom application to control the GOIP gateway. We have developed in the past custom applications that controlled simple GSM modems through AT commands for sending/receiving SMS messages in particular.
Although the gateway can be controlled through SIP we would like to control the GSM modems embedded in the gateway through AT commands if possible. This is because of the fine grained control AT commands offer and because we do not need VoIP features since we need only to send/receive SMS messages.
The gateway runs an unknown Linux instance to which we can connect through telnet. Unfortunately we do not have the credentials to authenticate to it. The gateway also has a web http administration interface to which we can authenticate but we can't find there settings/information related to channels that we can use for AT commands.
The documentation is very poor and the provider could not offer us any helpful information regarding this.
If anyone knows how we can send AT commands to the modems inside the gateway it is highly appreciated.
Up to now we have tried a brute force attack on the telnet interface to find the credentials with no success. We hope that once we can connect to the Linux instance driving the gateway we can connect from there to the modems through serial connections (to send AT commands) and we can reconfigure it to redirect the connections outside of the modem or to make an interface for sending commands to the modems.
The device has an update firmware option (through the web interface) which always gives the error "download failed". Downloaded the firmware (.pkg file) manually from their update pages and extracted the files from the embedded Linux distribution that should correspond to the ones placed on the gateway. The files were kept in the pkg file as an ROMFS compressed image which we mounted on a test station to see the files (probably the running OS on the gateway is an uClinux distribution).
Did this hoping that we can find there the /etc/passwd file which could be cracked with classic attack. However didn't found it and probably that file is placed on the gateway flash memory (contrary to the Linux files which are stored on the ROM memory). So if there is a way to erase / reset this flash memory that could be a solution (in case the gateway doesn't refuse to boot without those files). Another solution would be to be able to access the flash memory with the passwd file if there is such thing.
You might take the lid off and see what parts are inside.
If it's a general purpose processor with a published data sheet and without a lot of code security features, you might be in luck. For example, you might find:
By guessing headers or tracing from known pins, a console serial port, either logic level or RS232, hopefully with a shell listening
A boot mode pin for the micro connected to a resistor, which you could jumper to cause the micro to boot to a uart bootloader where you could download a new system image, or patch the existing one. If you are lucky the bootloader would be something known, like u-boot.
A JTAG port for the processor
A removable storage device which you could remove and alter
an SPI flash which you could carefully tap into and alter
A flash chip which you could desolder and transplant to a programmer
You could also make a GPL sources request for the kernel and whatever else from the vendor. Or even just trying to identify versions of things like a web server could help you look up any known exploits. Since it seems you have a similar system image to that which is installed, looking through it could be helpful - look for additional daemons running, listening on ports you weren't previously aware of, left over debug support, etc.
I am the developer of the GoIP you've purchased. Instead of trying to hack the GoIP, did you contact us to support your development of custom applications? Here are the updates of GoIP for you.
GoIP now supports SMPP. This could be an alternative to using AT commands to send and receive SMS.
API (Application Programming Interface) for GoIP is now available to support your custom application development.
If AT commands are still the preferred method, please contact us and I would be happy to discuss with you further.