Monitoring Stations

Configuration: Web Server Logs | Cisco | Apache | Linux | Text File

Web Server Logs

If you need to filter our monitoring station traffic from your web server logs there are several ways to do it. The easiest might be to filter based on the "User Agent".

Our monitoring stations all send the same "User Agent" string with each request. You can filter any requests from your logs that includes this "User Agent".

   Mozilla/4.0 (compatible; MSIE 6.0; www.alertra.com)

Apache Configuration

If you are using Apache to restrict access to your web site, you can give our monitoring stations access to the web site by including Allow directives in Directory, Files, and Locations sections for our monitoring stations.

# --- Alertra Monitoring Stations ---
Allow From 202.157.181.94     # Hong Kong CHN
Allow From 203.142.12.44      # Shanghai CHN
Allow From 117.120.9.38       # Sydney AUS
Allow From 77.37.2.96         # Frankfurt DEU
Allow From 83.136.67.2        # London GBR
Allow From 67.28.127.185      # Atlanta USA
Allow From 216.246.50.130     # Chicago USA
Allow From 64.79.136.185      # Las Vegas USA
Allow From 208.70.76.88       # Los Angeles USA
Allow From 205.162.234.107    # Oklahoma City USA
Allow From 207.218.123.185    # Orlando USA

Linux netfilter/iptables

If you are using Linux netfilter/iptables rules to restrict access to your server, you can include the following rules in your /etc/sysconfig/iptables file to give our monitoring stations access to the server. Be sure and execute /etc/init.d/iptables restart as root after updating the iptables configuration.

If you want to restrict which servers our stations have access to, replace the -d 0/0 parameter with the IP address or network we should have access to.

# --- Alertra Monitoring Stations ---
# Hong Kong CHN
-A INPUT -s 202.157.181.94 -d 0/0 -j ACCEPT
# Shanghai CHN
-A INPUT -s 203.142.12.44 -d 0/0 -j ACCEPT
# Sydney AUS
-A INPUT -s 117.120.9.38 -d 0/0 -j ACCEPT
# Frankfurt DEU
-A INPUT -s 77.37.2.96 -d 0/0 -j ACCEPT
# London GBR
-A INPUT -s 83.136.67.2 -d 0/0 -j ACCEPT
# Atlanta USA
-A INPUT -s 67.28.127.185 -d 0/0 -j ACCEPT
# Chicago USA
-A INPUT -s 216.246.50.130 -d 0/0 -j ACCEPT
# Las Vegas USA
-A INPUT -s 64.79.136.185 -d 0/0 -j ACCEPT
# Los Angeles USA
-A INPUT -s 208.70.76.88 -d 0/0 -j ACCEPT
# Oklahoma City USA
-A INPUT -s 205.162.234.107 -d 0/0 -j ACCEPT
# Orlando USA
-A INPUT -s 207.218.123.185 -d 0/0 -j ACCEPT

Cisco Access Lists

If you are using Cisco router Access Lists to restrict access to your server, you can use the following commands to give our monitoring stations access to your servers.

If you want to restrict which servers our stations have access to, replace the any parameter with the IP address or network we should have access to.

! --- Alertra Monitoring Stations ---
! Hong Kong CHN
access-list 405 permit ip host 202.157.181.94 any
! Shanghai CHN
access-list 405 permit ip host 203.142.12.44 any
! Sydney AUS
access-list 405 permit ip host 117.120.9.38 any
! Frankfurt DEU
access-list 405 permit ip host 77.37.2.96 any
! London GBR
access-list 405 permit ip host 83.136.67.2 any
! Atlanta USA
access-list 405 permit ip host 67.28.127.185 any
! Chicago USA
access-list 405 permit ip host 216.246.50.130 any
! Las Vegas USA
access-list 405 permit ip host 64.79.136.185 any
! Los Angeles USA
access-list 405 permit ip host 208.70.76.88 any
! Oklahoma City USA
access-list 405 permit ip host 205.162.234.107 any
! Orlando USA
access-list 405 permit ip host 207.218.123.185 any

Text File

If none of the above examples help, here is the monitoring station list in a parsable text file format.

# --- Alertra Monitoring Stations ---
202.157.181.94,Hong Kong CHN
203.142.12.44,Shanghai CHN
117.120.9.38,Sydney AUS
77.37.2.96,Frankfurt DEU
83.136.67.2,London GBR
67.28.127.185,Atlanta USA
216.246.50.130,Chicago USA
64.79.136.185,Las Vegas USA
208.70.76.88,Los Angeles USA
205.162.234.107,Oklahoma City USA
207.218.123.185,Orlando USA

If you have an idea on how this data can be made easier to incorporate into your software, network access equipment, or configuration please send us your ideas.

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