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Phil (aka MP3Monster)'s Blog

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Phil (aka MP3Monster)'s Blog

Monthly Archives: January 2020

API Gateway Deployment Patterns

14 Tuesday Jan 2020

Posted by mp3monster in APIs & microservices, General, Oracle, Technology

≈ 2 Comments

Tags

API, external, gateway, internal, outbound, pattern

When it comes to deployment of API Gateways, there are a couple of well-known patterns, that of the Internal Gateway and External Gateway (described in several resources including here).

These two deployments essentially reflect the considerations of offering endpoints up to less secure network segments such as the internet (external gateways) and trusted network zones (internal gateways). But in addition to the physical deployment within a network, these deployments are likely to host APIs with different characteristics, reflecting levels of trust, and emphasis on enterprise decoupling/abstraction (internal) –  the reason why APIs are sometimes associated with the idea of SOA 2.0. Compared with security sensitivity, and potentially monetization or at least usage metrics to help protect specific attack vectors.

These deployment patterns can be seen in the following diagram.

B06989_05_04

Both the internal and external gateways are reflective of interest in the origin of the API traffic. However a rarer 3rd pattern does exist.

Outbound Gateway

This pattern of crops up when you need to consider the ability to manage how internal solutions connect to outside services, for reasons such as:

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Security Vulnerabilities in Solution Deployment

04 Saturday Jan 2020

Posted by mp3monster in development, General, Technology

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Tags

CNCF, deployment, Oracle, Owasp, Security, software, TUF, update framework, updating

To varying degrees, most techies are aware of the security vulnerabilities identified in the OWASP Top 10 (SQL Injection, trying to homebrew Identity management etc), although I still sometimes have conversations where I feel the need to get the yellow or red card out. But the bottom line is that these risks are perhaps more appreciated because it is easier to understand external entities attacking seeking direct attacks to disrupt or access information. But there are often subtler and at least more costly to repair attacks such as internal attacks and indirect attacks such as compromising software deployment mechanisms.

This, later attack Is not a new risk, as you can see from the following links, been recognised by the security community for some time (you can find academic papers going back 10+ years looking at the security risks for Yum and RPM for example).

  • Survivable Key Compromise in Software Update Systems
  • Consequences of Insecure Software Updates
  • Attacks on Package Manager
  • The Problem of Package Manager Trust

But software is becoming ever more pervasive, we’re more aware than ever that maintaining software to the latest releases means that known vulnerabilities are closed. As a result, we have seen a proliferation in mechanisms to recognise the need to update and deploying updates. 10 years ago, updating frameworks where typically small in number and linked to vendors who could/had to invest in making the mechanisms as a secure as possible – think Microsoft, Red Hat. However we have seen this proliferate, any browser worthy of attention has automated updating let alone the wider software tools. As development has become more polyglot every language has its central repos of framework libraries (maven central, npm, chocolatey ….). Add to this the growth in multi-cloud and emphasis on micro deployments to support microservices and the deployment landscape gets larger and ever more complex and therefore vulnerable.

What to do?

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