Technology Insights

DDWRT – What do the PPTP Settings for MPPE no40 and no56 Mean?

MPPE stands for Microsoft Point to Point Encryption. MPPE is used to encrypt data traveling over a PPTP, or Point to Point Tunneling Protocol, connection.

When setting up a PPTP connection using DD-WRT firmware on your router there is a blank field to configure MPPE Encryption options in the VPN/PPTP setup. By default the text “mppe required” is typed into this field. You can add a couple other options which include no40, no56, and stateful or stateless. Descriptions of these options are listed below.

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Technology Insights

What does pgbench TPS stand for?

When pgbench results are provided they are shown as TPS or transactions per second. Below is an example of pgbench being used. bash bash-3.1$ pgbench -Upostgres -s 10 -c 10 -t 3000 pgbench starting vacuum…end. transaction type: TPC-B (sort of) scaling factor: 1 number of clients: 10 number of transactions per client: 3000 number of…

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Technology Errors

Cannot Connect to PostgreSQL Database with pgAdmin III and No Errors

On initial installation of PostgreSQL typically you will also download and install pgAdmin III on your local PC to assist in Postgres management. The pgAdmin GUI will assist in viewing database information quickly, etc. In one of my installations I was not able to connect to the new Postgres installation via pgAdmin and I was not receiving errors. Typically the issues I might have are related to the password not being correct or various GRANT permissions.

I had configured all of the initial items that I usually do which included the below.

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