Ingress03

Purpose

This system provides an incoming IPv4 TLS and HTTP proxy using nginx to share one public IPv4 address for multiple services on Infra03.

Administration

System Administration

Application Administration

Application

Administrator(s)

nginx

Jan Dittberner

Contact

Additional People

No additional people have sudo access on that machine.

Basics

Physical Location

This system is located in an LXC container on physical machine Infra03.

Logical Location

IP Internet:

213.154.225.249

IP Intranet:

172.16.2.9

IP Internal:

10.0.3.10

IPv6:

2001:7b8:616:162:3::10

MAC address:

00:ff:8f:34:8c:dd (eth0)

See also

See Network

Monitoring

internal checks:

Monitoring checks for ingress03.infra.cacert.org

external checks:

Monitoring checks for ingress03.cacert.org

DNS

Name

Type

Content

ingress03.cacert.org.

IN A

213.154.225.249

ingress03.cacert.org.

IN AAAA

2001:7b8:616:162:3::10

See also

See Wiki page SystemAdministration/Procedures/DNSChanges

Operating System

  • Debian GNU/Linux 11 Bullseye

Services

Listening services

Port

Service

Origin

Purpose

22/tcp

ssh

ANY

admin console access

25/tcp

smtp

local

mail delivery to local MTA

80/tcp

http

ANY

nginx reverse proxy

443/tcp

https

ANY

nginx SNI proxy

5665/tcp

icinga2

monitor

remote monitoring service

465/udp

syslog

local

syslog port

Running services

Service

Usage

Start mechanism

cron

job scheduler

systemd unit cron.service

dbus-daemon

System message bus

systemd unit dbus.service

Exim

SMTP server for local mail submission

systemd unit exim4.service

icinga2

Icinga2 monitoring agent

systemd unit icinga2.service

openssh server

ssh daemon for remote administration

systemd unit ssh.service

Puppet agent

configuration management agent

systemd unit puppet.service

rsyslog

syslog daemon

systemd unit rsyslog.service

Connected Systems

Outbound network connections

Security

SSH host keys

Algorithm

Fingerprints

RSA

SHA256:EhpGxNuCNirP/I/e9A85p7M1xe7PuQej4jrNJBSsTAg, MD5:b9:df:fb:fb:4e:8e:34:e4:6a:5d:e7:18:bb:5c:43:82

DSA

-

ECDSA

SHA256:o7ACxl0hkiYobV+gmnrV3eaF09dttdh69K2T6bkO7jE, MD5:a9:c3:df:2a:13:38:14:ad:a6:15:f4:ff:4b:5e:75:2d

ED25519

SHA256:HA8qzC8T62WpiAHt6IClWxwhp2hpg9CjJucPPKyPvUw, MD5:92:00:a9:29:5b:c0:42:da:d8:8e:3b:9a:c2:cf:41:bb

See also

SSH host key list

Risk assessments on critical packages

The Puppet agent package and a few dependencies are installed from the official Puppet APT repository because the versions in Debian are too old to use modern Puppet features.

Critical Configuration items

The system configuration is managed via Puppet profiles. There is no configuration items outside of the CAcert Git repository cacert-puppet.

Tasks

Adding a new forward entry

Add an entry to the profiles::sniproxy::forwarded item in hieradata/nodes/ingress03.yaml in CAcert Git repository cacert-puppet and adjust the firewall configuration on Infra03. You will need to request DNS changes from the critical team if you want to switch an existing service to use the SNI proxy service.

Changes

Planned

  • None

System Future

  • No plans

Additional documentation

See also

References