• Log InLog In
  • Register
Liquid`
Team Liquid Liquipedia
EDT 05:12
CEST 11:12
KST 18:12
  • Home
  • Forum
  • Calendar
  • Streams
  • Liquipedia
  • Features
  • Store
  • EPT
  • TL+
  • StarCraft 2
  • Brood War
  • Smash
  • Heroes
  • Counter-Strike
  • Overwatch
  • Liquibet
  • Fantasy StarCraft
  • TLPD
  • StarCraft 2
  • Brood War
  • Blogs
Forum Sidebar
Events/Features
News
Featured News
RSL Season 1 - Final Week6[ASL19] Finals Recap: Standing Tall12HomeStory Cup 27 - Info & Preview18Classic wins Code S Season 2 (2025)16Code S RO4 & Finals Preview: herO, Rogue, Classic, GuMiho0
Community News
Esports World Cup 2025 - Brackets Revealed10Weekly Cups (July 7-13): Classic continues to roll3Team TLMC #5 - Submission extension3Firefly given lifetime ban by ESIC following match-fixing investigation17$25,000 Streamerzone StarCraft Pro Series announced7
StarCraft 2
General
Weekly Cups (July 7-13): Classic continues to roll Esports World Cup 2025 - Brackets Revealed The GOAT ranking of GOAT rankings Team TLMC #5 - Submission extension Who will win EWC 2025?
Tourneys
RSL: Revival, a new crowdfunded tournament series FEL Cracov 2025 (July 27) - $8000 live event $5,100+ SEL Season 2 Championship (SC: Evo) WardiTV Mondays Sparkling Tuna Cup - Weekly Open Tournament
Strategy
How did i lose this ZvP, whats the proper response Simple Questions Simple Answers
Custom Maps
External Content
Mutation # 482 Wheel of Misfortune Mutation # 481 Fear and Lava Mutation # 480 Moths to the Flame Mutation # 479 Worn Out Welcome
Brood War
General
BGH Auto Balance -> http://bghmmr.eu/ BW General Discussion Flash Announces (and Retracts) Hiatus From ASL Starcraft in widescreen A cwal.gg Extension - Easily keep track of anyone
Tourneys
Cosmonarchy Pro Showmatches [Megathread] Daily Proleagues CSL Xiamen International Invitational [BSL20] Non-Korean Championship 4x BSL + 4x China
Strategy
Simple Questions, Simple Answers I am doing this better than progamers do.
Other Games
General Games
Path of Exile Nintendo Switch Thread Stormgate/Frost Giant Megathread CCLP - Command & Conquer League Project The PlayStation 5
Dota 2
Official 'what is Dota anymore' discussion
League of Legends
Heroes of the Storm
Simple Questions, Simple Answers Heroes of the Storm 2.0
Hearthstone
Heroes of StarCraft mini-set
TL Mafia
TL Mafia Community Thread Vanilla Mini Mafia
Community
General
Russo-Ukrainian War Thread Stop Killing Games - European Citizens Initiative US Politics Mega-thread Summer Games Done Quick 2025! Things Aren’t Peaceful in Palestine
Fan Clubs
SKT1 Classic Fan Club! Maru Fan Club
Media & Entertainment
Movie Discussion! [Manga] One Piece Anime Discussion Thread [\m/] Heavy Metal Thread
Sports
Formula 1 Discussion TeamLiquid Health and Fitness Initiative For 2023 2024 - 2025 Football Thread NBA General Discussion NHL Playoffs 2024
World Cup 2022
Tech Support
Computer Build, Upgrade & Buying Resource Thread
TL Community
The Automated Ban List
Blogs
Men Take Risks, Women Win Ga…
TrAiDoS
momentary artworks from des…
tankgirl
from making sc maps to makin…
Husyelt
StarCraft improvement
iopq
Trip to the Zoo
micronesia
Customize Sidebar...

Website Feedback

Closed Threads



Active: 573 users

Server Blocker

Forum Index > SC2 General
Post a Reply
1 2 3 Next All
SC-Shield
Profile Joined December 2018
Bulgaria818 Posts
Last Edited: 2020-12-28 14:47:52
December 28 2020 13:39 GMT
#1
Hi guys,

I've updated my SC2ServerBlocker program to block game servers in SC2. The common use case is if you play on US server but are matched on an Australian one due to opponent(s). Some people experience lag issues, so you might improve your latency/chances to win if you deselect/block some of servers.

In general, I've seen the following during my testing.
Regions:
EU
Only one server, EU Central. It's not listed in the program.

US
- US West
- US East
- US Central
- Brazil
- Singapore
- Australia

KR
- Korea
- Taiwan

Download: https://www.mediafire.com/file/n8r73lnutp572yp/SC2ServerBlocker.zip/file
Source code: https://github.com/bbalchev/SC2ServerBlocker

Note: my antivirus is suspicious but after scan is complete it says the file is ok. Don't be alarmed. You can check source code for peace of mind.

How it works
First, if you don't have lag issues, you don't need to use this program. If you get a laggy game, I suggest you use "Ctrl+Alt+F" in the laggy game to see what server you're on.
Example: If you're playing on US but on the top left corner (after you execute "Ctrl+Alt+F") you see a non-US server, e.g. Australia, then it's a good candidate for blocking so you're not matched on this server again if it's laggy for you.
Here is a screenshot of top left corner where game server is specified as well as ping:
+ Show Spoiler +

[image loading]


Special thanks to LaughNgamez for helping me with game settings to switch to various servers. Also thanks to wooptr for his original thread here: https://tl.net/forum/starcraft-2/547926-how-to-block-australia-brazil-singapore-servers
I've just automated his instructions and updated IP addresses of Australia and Taiwan since my last post there.

Screenshot:
[image loading]

LaughNgamez
Profile Joined April 2015
Canada523 Posts
December 28 2020 13:50 GMT
#2
Handy tool I recommend everyone use if you get tilted by high ping like me :D

Why Blizzard never included a base option to play only on local servers beats me.
(◕‿◕✿) Hopefully one day a decent caster http://www.youtube.com/LaughNgamez (◠‿◠✿)
Elevenst
Profile Joined April 2010
Canada249 Posts
December 28 2020 14:25 GMT
#3
How does it work?
SC-Shield
Profile Joined December 2018
Bulgaria818 Posts
Last Edited: 2020-12-28 14:47:42
December 28 2020 14:34 GMT
#4
On December 28 2020 23:25 Elevenst wrote:
How does it work?


I've added a section to explain. Thanks for feedback.


How it works
First, if you don't have lag issues, you don't need to use this program. If you get a laggy game, I suggest you use "Ctrl+Alt+F" in the laggy game to see what server you're on.
Example: If you're playing on US but on the top left corner (after you execute "Ctrl+Alt+F") you see a non-US server, e.g. Australia, then it's a good candidate for blocking so you're not matched on this server again if it's laggy for you.
Here is a screenshot of top left corner where game server is specified:
+ Show Spoiler +

[image loading]

_fool
Profile Joined February 2011
Netherlands677 Posts
Last Edited: 2020-12-28 15:29:35
December 28 2020 15:27 GMT
#5
As to how it works technically (not functionally, that's explained above ^^): looks like the application defines firewall rules using the netsh tool that comes with windows. So basically the tool saves you typing stuff like this by hand in the cmd.exe shell:

/C netsh advfirewall firewall add rule name="ScBrazil" Dir=Out Action=Block RemoteIP=123.123.123.123(+more IPs)

It's not modifying SC2 files, just reconfiguring the Windows firewall like anyone with the correct commands could.
"News is to the mind what sugar is to the body"
Elevenst
Profile Joined April 2010
Canada249 Posts
December 28 2020 17:09 GMT
#6
On December 29 2020 00:27 _fool wrote:
As to how it works technically (not functionally, that's explained above ^^): looks like the application defines firewall rules using the netsh tool that comes with windows. So basically the tool saves you typing stuff like this by hand in the cmd.exe shell:

/C netsh advfirewall firewall add rule name="ScBrazil" Dir=Out Action=Block RemoteIP=123.123.123.123(+more IPs)

It's not modifying SC2 files, just reconfiguring the Windows firewall like anyone with the correct commands could.

this is what i wanted thanks
oBlade
Profile Blog Joined December 2008
United States5548 Posts
December 28 2020 17:34 GMT
#7
On December 28 2020 22:50 LaughNgamez wrote:
Handy tool I recommend everyone use if you get tilted by high ping like me :D

Why Blizzard never included a base option to play only on local servers beats me.

At the time the technology wasn't yet developed to isolate regions to play with each other locally.
"I read it. You know how to read, you ignorant fuck?" - Andy Dufresne
vg162
Profile Joined January 2020
6 Posts
December 28 2020 18:54 GMT
#8
wooptr get the hell in here
ZigguratOfUr
Profile Blog Joined April 2012
Iraq16955 Posts
December 28 2020 19:19 GMT
#9
On December 28 2020 22:50 LaughNgamez wrote:
Handy tool I recommend everyone use if you get tilted by high ping like me :D

Why Blizzard never included a base option to play only on local servers beats me.


I mean they did--they just chose to make 'preferred servers' not apply from Masters and up (possibly due to ladder qualifier abuse like what Polt and Hydra were doing).

Though given the prevalence of people blocking servers Blizzard absolutely should make it apply to everyone again (and change it so people can select multiple servers). Since right now people that don't block servers are at an unfair ping disadvantage against people that do.
-Kyo-
Profile Blog Joined August 2010
Japan1926 Posts
December 29 2020 04:50 GMT
#10
Just messaged you about this again last week or so. Thanks for updating it again. You might not be aware of how many people actually use this, including a lot of GM players
Anime is cuter than you. Legacy of the Void GM Protoss Gameplay: twitch.tv/kyo7763 youtube.com/user/KyoStarcraft/
TL+ Member
SC-Shield
Profile Joined December 2018
Bulgaria818 Posts
Last Edited: 2020-12-29 12:23:34
December 29 2020 12:16 GMT
#11
On December 29 2020 13:50 -Kyo- wrote:
Just messaged you about this again last week or so. Thanks for updating it again. You might not be aware of how many people actually use this, including a lot of GM players


Yes, I remember. I've updated the program since I replied to you. There is now a confirmation message when you click Block/Unblock buttons (it was so confusing and I don't know why I didn't do it initially). Also I've added missing IP addresses of Australia and Taiwan, I guess they've got updated at some point. I think it's good to update. Thanks for feedback!
Therapist.
Profile Joined January 2009
United States207 Posts
December 29 2020 16:22 GMT
#12
Thanks for doing this!

How do you determine the IP addresses of new servers as they are added?

Since the IP addresses of the servers will change and you may not always be around to update this app, it would be very helpful to be able to determine what the IP's of a given server region are.
SC-Shield
Profile Joined December 2018
Bulgaria818 Posts
Last Edited: 2020-12-29 17:30:29
December 29 2020 17:28 GMT
#13
On December 30 2020 01:22 Therapist. wrote:
Thanks for doing this!

How do you determine the IP addresses of new servers as they are added?

Since the IP addresses of the servers will change and you may not always be around to update this app, it would be very helpful to be able to determine what the IP's of a given server region are.


Applies to US and KR regions only (EU has only one type of server, EU Central):
First, you need to go to Options -> Language and Region. Then, select "Pick Game Server on Lobby Creation".
Screenshot:
+ Show Spoiler +

[image loading]



This way, when you create a custom game, you will have the following list of servers:
+ Show Spoiler +

[image loading]



Pick server of your interest from that list (e.g. Brazil) and create a game. You could add AI as your opponent. When game is created, run Wireshark (packet sniffer program) and look for UDP traffic. You should see similar exchange of traffic like below:
+ Show Spoiler +

[image loading]



Tip: close as many applications as possible beforehand to reduce noise.
Note: above traffic exchange isn't specific to any game server, I'm unable to host a game at the moment. It's just an example how it could look like.
Required programs: Wireshark - https://www.wireshark.org/

I might create a quick configuration file for next update where people could add IPs manually which will be useful when they change.


Therapist.
Profile Joined January 2009
United States207 Posts
December 29 2020 18:49 GMT
#14
That's great. Thank you very much.
vik7
Profile Joined May 2009
United States227 Posts
December 30 2020 12:20 GMT
#15
F for Australian players lol
NA player, go KT Flash, ST Life( ;( ) , IMMvp, EGJD, CMStorm Polt, SKT Rain, KT Zest, Bisu, RootherO, Stats and teamliqiud
woopr
Profile Joined December 2012
United States112 Posts
January 10 2021 00:06 GMT
#16
--- Nuked ---
robksc2
Profile Joined January 2021
3 Posts
Last Edited: 2021-01-10 19:41:32
January 10 2021 19:41 GMT
#17
On December 29 2020 00:27 _fool wrote:
/C netsh advfirewall firewall add rule name="ScBrazil" Dir=Out Action=Block RemoteIP=123.123.123.123(+more IPs)

It's not modifying SC2 files, just reconfiguring the Windows firewall like anyone with the correct commands could.


So doesn't work unless you enable Windows Firewall? Maybe host file edit may be better.
Foxdier
Profile Joined September 2021
2 Posts
July 10 2023 17:48 GMT
#18
--- Nuked ---
JamieRobles
Profile Joined July 2023
1 Post
Last Edited: 2023-07-13 07:38:22
July 11 2023 16:15 GMT
#19
--- Nuked ---
Rescue1
Profile Joined July 2019
6 Posts
January 04 2024 00:26 GMT
#20
Any update on this?
Apparently today the western server changed its IP range
1 2 3 Next All
Please log in or register to reply.
Live Events Refresh
Next event in 48m
[ Submit Event ]
Live Streams
Refresh
StarCraft 2
Nina 213
mcanning 123
StarCraft: Brood War
Zeus 799
firebathero 246
BeSt 142
Light 44
sSak 34
Shinee 32
sorry 28
Shine 13
yabsab 9
Bale 5
[ Show more ]
Mind 4
PianO 0
Dota 2
XaKoH 469
XcaliburYe374
canceldota137
League of Legends
JimRising 515
Counter-Strike
Stewie2K1181
shoxiejesuss618
allub38
Super Smash Bros
Mew2King134
Other Games
summit1g10967
singsing926
Fuzer 234
Happy187
SortOf138
crisheroes70
Trikslyr33
Organizations
Other Games
gamesdonequick3437
StarCraft 2
Blizzard YouTube
StarCraft: Brood War
BSLTrovo
sctven
[ Show 12 non-featured ]
StarCraft 2
• Berry_CruncH374
• AfreecaTV YouTube
• intothetv
• Kozan
• IndyKCrew
• LaughNgamezSOOP
• Migwel
• sooper7s
StarCraft: Brood War
• BSLYoutube
• STPLYoutube
• ZZZeroYoutube
Dota 2
• lizZardDota2180
Upcoming Events
Replay Cast
48m
WardiTV European League
6h 48m
ShoWTimE vs sebesdes
Percival vs NightPhoenix
Shameless vs Nicoract
Krystianer vs Scarlett
ByuN vs uThermal
Harstem vs HeRoMaRinE
PiGosaur Monday
14h 48m
uThermal 2v2 Circuit
1d 6h
Replay Cast
1d 14h
The PondCast
2 days
WardiTV European League
2 days
Replay Cast
2 days
Epic.LAN
3 days
CranKy Ducklings
4 days
[ Show More ]
Epic.LAN
4 days
CSO Contender
4 days
BSL20 Non-Korean Champi…
4 days
Bonyth vs Sziky
Dewalt vs Hawk
Hawk vs QiaoGege
Sziky vs Dewalt
Mihu vs Bonyth
Zhanhun vs QiaoGege
QiaoGege vs Fengzi
Sparkling Tuna Cup
5 days
Online Event
5 days
BSL20 Non-Korean Champi…
5 days
Bonyth vs Zhanhun
Dewalt vs Mihu
Hawk vs Sziky
Sziky vs QiaoGege
Mihu vs Hawk
Zhanhun vs Dewalt
Fengzi vs Bonyth
Liquipedia Results

Completed

2025 ACS Season 2: Qualifier
RSL Revival: Season 1
Murky Cup #2

Ongoing

JPL Season 2
BSL 2v2 Season 3
CSL 17: 2025 SUMMER
Copa Latinoamericana 4
Jiahua Invitational
BSL20 Non-Korean Championship
Championship of Russia 2025
FISSURE Playground #1
BLAST.tv Austin Major 2025
ESL Impact League Season 7
IEM Dallas 2025
PGL Astana 2025
Asian Champions League '25
BLAST Rivals Spring 2025
MESA Nomadic Masters

Upcoming

CSL Xiamen Invitational
CSL Xiamen Invitational: ShowMatche
2025 ACS Season 2
CSLPRO Last Chance 2025
CSLPRO Chat StarLAN 3
BSL Season 21
K-Championship
RSL Revival: Season 2
SEL Season 2 Championship
uThermal 2v2 Main Event
FEL Cracov 2025
Esports World Cup 2025
Underdog Cup #2
ESL Pro League S22
StarSeries Fall 2025
FISSURE Playground #2
BLAST Open Fall 2025
BLAST Open Fall Qual
Esports World Cup 2025
BLAST Bounty Fall 2025
BLAST Bounty Fall Qual
IEM Cologne 2025
TLPD

1. ByuN
2. TY
3. Dark
4. Solar
5. Stats
6. Nerchio
7. sOs
8. soO
9. INnoVation
10. Elazer
1. Rain
2. Flash
3. EffOrt
4. Last
5. Bisu
6. Soulkey
7. Mini
8. Sharp
Sidebar Settings...

Advertising | Privacy Policy | Terms Of Use | Contact Us

Original banner artwork: Jim Warren
The contents of this webpage are copyright © 2025 TLnet. All Rights Reserved.