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This is the support site for Andrews & Arnold Ltd, a UK Internet provider. Information on these pages is generally for our customers but may be useful to others, enjoy!
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This
=Static DNS=
Static DNS manages control over which IP's the steam client can use:
<syntaxhighlight lang=xml>
<dns resolvers="2001:8b0::2020 2001:8b0::2021 217.169.20.20 217.169.20.21">
<host name="cdn.akamai.steamstatic.com" ip="23.63.98.26 23.63.98.32"/>
<host name="cgpromotion.azurewebsites.net" ip="104.40.183.236"/>
<host
<host name="crl4.digicert.com" ip="66.225.197.197"/>
<host name="dreamfallchapters.azurewebsites.net" ip="191.238.8.26"/>
<host name="images.akamai.steamusercontent.com" ip="23.63.98.26 23.63.98.32"/>
<host name="media2.steampowered.com" ip="205.185.216.10 205.185.216.42"/>
<host name="media4.steampowered.com" ip="23.63.98.26 23.63.98.32"/>
<host
<host
<host name="steamcdn-a.akamaihd.net" ip="23.67.255.200 23.67.255.208"/>
<host name="steamcloud-eu.storage.googleapis.com" ip="216.58.198.208 216.58.198.240"/>
<host name="steamcloudams.blob.core.windows.net" ip="168.61.58.14"/>
<host name="steamclouddub.blob.core.windows.net" ip="191.235.193.40"/>
<host name="steamcommunity-a.akamaihd.net" ip="23.63.99.219 23.67.255.202"/>
<host
<host name="store.steampowered.com" ip="23.205.213.78"/>
<host name="www.paypal.com" ip="173.223.190.173"/>
</dns>
</syntaxhighlight>
=Firewall=
Outbound Rules - Change the MAC address in the source-mac= element to your own:
<syntaxhighlight lang=xml>
<rule-set name="Steam Client: Outbound" source-interface="LAN" target-interface="pppoe" no-match-action="continue">
<rule name="Steam OS: NTP"
target-port="123"
protocol="17"
action="accept"/>
<rule name="Steam Client: TCP"
target-port="27014-27050"
protocol="6"
action="accept"/>
<rule name="Steam Client: UDP"
target-port="3478 4379 4380 27000-27030"
protocol="17"
action="accept"/>
<rule name="
target-ip="23.
target-port="80 443"
protocol="6"
action="accept"/>
<rule name="
target-ip="205.185.216.
target-port="80 443"
protocol="6"
action="accept"/>
<rule name="
target-ip="
target-port="80 443"
protocol="6"
action="accept"/>
<rule name="
target-ip="
target-port="80 443"
protocol="6"
action="accept"/>
<rule name="
target-ip="
target-port="80 443"
protocol="6"
action="accept"/>
<rule name="
target-ip="
target-port="80 443"
protocol="6"
action="accept"/>
<rule name="
target-ip="
target-port="80 443"
protocol="6"
action="accept"/>
<rule name="Valve Software"
target-ip="103.10.124.0/
target-port="80 443"
protocol="6"
action="accept"/>
<rule name="Deny All"
source-mac="
action="reject"/>
</rule-set>
Inbound Rules - Change the IP address in the target-ip= element to your own:
<syntaxhighlight lang=xml>
<rule-set name="Steam Client: Inbound" target-interface="LAN" no-match-action="reject">
<rule name="Allow Firebrick" source-interface="self"/>
<rule name="Steam Client: TCP" target-ip="217.169.11.114/31" target-port="27014-27050" protocol="6" action="accept"/>
<rule name="Steam Client: UDP" target-ip="217.169.11.114/31" target-port="3478 4379 4380 27000-27030" protocol="17" action="accept"/>
</rule-set>
</syntaxhighlight>
=Technical Notes=
Steam's game delivery system uses 3 different high performing CDN companies: Akamai, Highwinds and Level 3.
*media.steampowered.com = Akamai
*media2.steampowered.com = Highwinds
*media3.steampowered.com = Level 3
*media4.steampowered.com = Akamai
==Origin Server==
The origin server is where each CDN will pull files from. The origin server hostnames are:
*cdn-01-origin.steampowered.com
*cdn-01.steampowered.com
==Steam Client==
This documents what hostnames the steam client uses and when.
On startup:
*repo.steampowered.com
*client-download.steampowered.com
*media.steampowered.com (Randomly Selected)
*media2.steampowered.com (Randomly Selected)
*media3.steampowered.com (Randomly Selected)
*media4.steampowered.com (Randomly Selected)
*api.steampowered.com
*clientconfig.akamai.steamstatic.com
*steamcommunity-a.akamaihd.net
*store.steampowered.com
*cdn.akamai.steamstatic.com
*steamcommunity.com
*br01.broadcast.fra.steamstatic.com (Randomly Selected)
*br01.broadcast.lax.steamstatic.com (Randomly Selected)
*br01.broadcast.lon.steamstatic.com (Randomly Selected)
*br01.broadcast.ord.steamstatic.com (Randomly Selected)
*br01.broadcast.sto.steamstatic.com (Randomly Selected)
*br02.broadcast.fra.steamstatic.com (Randomly Selected)
*br02.broadcast.lax.steamstatic.com (Randomly Selected)
*br02.broadcast.lon.steamstatic.com (Randomly Selected)
*br02.broadcast.ord.steamstatic.com (Randomly Selected)
*br02.broadcast.sto.steamstatic.com (Randomly Selected)
*br03.broadcast.fra.steamstatic.com (Randomly Selected)
*br03.broadcast.lax.steamstatic.com (Randomly Selected)
*br03.broadcast.lon.steamstatic.com (Randomly Selected)
*br03.broadcast.ord.steamstatic.com (Randomly Selected)
*br03.broadcast.sto.steamstatic.com (Randomly Selected)
*br04.broadcast.fra.steamstatic.com (Randomly Selected)
*br04.broadcast.lax.steamstatic.com (Randomly Selected)
*br04.broadcast.lon.steamstatic.com (Randomly Selected)
*br04.broadcast.ord.steamstatic.com (Randomly Selected)
*br04.broadcast.sto.steamstatic.com (Randomly Selected)
Entering the Store:
*store.akamai.steamstatic.com
Exploring your Queue:
*store.steampowered.com
*cdn.akamai.steamstatic.com
PayPal Payments:
*store.steampowered.com
*ocsp.digicert.com
*crl4.digicert.com
*www.paypal.com
*s2.symcb.com
*s1.symcb.com
*www.paypalobjects.com
*paypal.d1.sc.omtrdc.net
*t.paypal.com
==Steam Cloud==
The steam cloud
Deponia
*cgpromotion.azurewebsites.net
*cgpromotion.blob.core.windows.net
Deponia Doomsday
*cgpromotion.azurewebsites.net
*cgpromotion.blob.core.windows.net
Dreamfall Chapters
*dreamfallchapters.azurewebsites.net
*steamcloud-dub.s3.amazonaws.com
==IP Reference==
This documents what range of IP's belong to which CDN node and steam hostname.
cdn.akamai.steamstatic.com:<br>
cdn.store.steampowered.com:<br>
clientconfig.akamai.steamstatic.com:<br>
images.akamai.steamusercontent.com:<br>
media.steampowered.com:<br>
media4.steampowered.com:<br>
repo.steampowered.com:<br>
store.akamai.steamstatic.com:
*a1507.d.akamai.net
*23.63.98.26 (Primary)
*23.63.98.32 (Primary)
*23.63.98.10
*23.63.98.17
*23.63.98.18
*23.63.98.19
*23.63.98.27
*23.63.98.33
*23.63.98.41
*23.63.98.43
*23.63.99.58
*23.63.99.90
*104.86.110.249
*104.86.111.137
steamcommunity-a.akamaihd.net:
*a1697.g.akamai.net
*23.63.99.219 (Primary)
*23.67.255.202 (Primary)
*104.86.110.24
*104.86.110.75
steamstore-a.akamaihd.net:
*a1737.g.akamai.net
*23.63.99.208 (Primary)
*23.63.99.240 (Primary)
*104.86.110.24
*104.86.110.81
steamcdn-a.akamaihd.net:
*a1843.g.akamai.net
*23.67.255.200 (Primary)
*23.67.255.208 (Primary)
*104.86.110.27
*104.86.110.35
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