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Author Topic: [CLOSED] BTC Guild - Pays TxFees+NMC, Stratum, VarDiff, Private Servers  (Read 829505 times)
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Tigggger
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October 01, 2013, 04:07:46 PM
 #4061

Someone mentioned this earlier during the main attack but is probably got swamped, is it not possible to whitelist active miners and block everything else during an attack ?

Whitelisting does not work.  iptables does not work.  Once an attacker is already flooding your pipes, blocking them does not magically remove their traffic that is already hitting your switch.  Upstream filtering IS in place at BTC Guild, but this is hitting through Stratum ports.  There simply isn't any way to completely block the traffic, outside of having enough bandwidth to absorb it.  Then the problem becomes identifying good vs bad traffic.  BTC Guild regularly has 25,000-30,000 active stratum connections.  It's *extremely* hard to separate the good from the bad.

OK, thanks for the explanation, not familiar with how it all works. Appreciate all you do to provide such a good service.

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October 01, 2013, 05:10:17 PM
 #4062

Someone mentioned this earlier during the main attack but is probably got swamped, is it not possible to whitelist active miners and block everything else during an attack ?

Whitelisting does not work.  iptables does not work.  Once an attacker is already flooding your pipes, blocking them does not magically remove their traffic that is already hitting your switch.  Upstream filtering IS in place at BTC Guild, but this is hitting through Stratum ports.  There simply isn't any way to completely block the traffic, outside of having enough bandwidth to absorb it.  Then the problem becomes identifying good vs bad traffic.  BTC Guild regularly has 25,000-30,000 active stratum connections.  It's *extremely* hard to separate the good from the bad.

Welcome to the nextgen DDoS.. It's a thorny problem.

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October 01, 2013, 05:23:34 PM
 #4063

Anyone else have their USB Block Erupters die during the DDOSing? My two devices have their green lights constantly on now.

[EDIT]

Got it working on another computer.
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October 01, 2013, 06:58:00 PM
 #4064

EU-Stratum is now attempting to come back online in the EU region rather than a redirect to a US-based proxy.

R.I.P. BTC Guild, 2011 - 2015.
BTC Guild Forum Thread
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October 01, 2013, 07:24:42 PM
 #4065

Are the DDoS connections establishing, or is this just a script kiddie syn-flood?  (sounds like you have too much traffic for syn-cookies)  If they are establishing and sending useless requests- can you estimate number of hosts participating?

Depending on the bot being used, redirecting known-bad connections to a tarpit can help. I've pointed bots to tarpits, and some go quiet after all of their threads are told to "shut up and wait". Grin

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October 01, 2013, 08:03:59 PM
 #4066

Just to clarify a common question:  If you have been given the semi-private DNS information, you do not need to switch back at any time.  The semi-private servers will *not* go down once the attacks are completely over. Staying on the semi-private DNS may end up keeping you online next time an attack hits.  It's not a guarantee, but it has worked quiet well for most users so far.

R.I.P. BTC Guild, 2011 - 2015.
BTC Guild Forum Thread
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October 01, 2013, 10:21:49 PM
 #4067

have you been in contact with the FBI about this attack? I'm thinking that it couldn't hurt. You are a US business, your business is being intentionaly disrupted by outside forces. They should be made aware of the situation if nothing else.

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October 01, 2013, 10:39:13 PM
 #4068

Isn't the fbi shut down? And besides they probably won't do anything and defently due to the fact this is bitcoin we are talking about. But who knows.

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October 01, 2013, 10:47:57 PM
 #4069

That's more like asking them to come check you out as well. FBI is out of business but will gladly use an escape goat to secure some jobs, might as well be a bitcoin pool.

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October 01, 2013, 11:05:04 PM
 #4070

Oh stop you guys, running a pool isn't illegal, mining isn't illegal, and most certainly bitcoin isn't illegal. I forgot about the shutdown. hmmm is it a good time to be a criminal?

Even if they did nothing, it couldn't hurt. Who knows, it might be a key piece to a puzzle that they are already working on. Enough Foil Hat stuff. Undecided

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October 01, 2013, 11:07:29 PM
 #4071

If you're still having issues getting connected, please let me know by PM or email.  Every testing machine I have has been working quite well for about 12 hours.  The only hiccups should've been when some old proxies were closed and the new EU servers brought up.

R.I.P. BTC Guild, 2011 - 2015.
BTC Guild Forum Thread
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October 02, 2013, 03:23:43 AM
 #4072

man ever since the ddos the pools luck sucks and i have notice a bit difference in my bitcoin ballance. I was getting about 0.1BTC a day. I know not much but still. i havent enven gotten that since 2013-09-30 03:07:19 AM. Sad  Cry

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October 02, 2013, 03:25:23 AM
 #4073

man ever since the ddos the pools luck sucks and i have notice a bit difference in my bitcoin ballance. I was getting about 0.1BTC a day. I know not much but still. i havent enven gotten that since 2013-09-30 03:07:19 AM. Sad  Cry

Luck hasn't been that bad.  We had 25 consecutive shifts at 100% or higher earlier (#10648 - 10672).  Only the last 11 shifts have been under expectation, hardly "luck sucks".

R.I.P. BTC Guild, 2011 - 2015.
BTC Guild Forum Thread
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October 02, 2013, 03:30:49 AM
 #4074

yea but 74-83 are only in the teens if that. what happened to the 20+ blocks a shift?

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October 02, 2013, 03:34:47 AM
 #4075

yea but 74-83 are only in the teens if that. what happened to the 20+ blocks a shift?

Difficulty went up.  It only takes 16 to be above neutral at this difficulty+value of N.

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October 02, 2013, 03:52:03 AM
 #4076

well havent been over 16 since 10673

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October 02, 2013, 03:54:49 AM
 #4077

well havent been over 16 since 10673

Which wasn't even 12 hours ago ;p

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October 02, 2013, 04:03:36 AM
 #4078

well havent been over 16 since 10673

Which wasn't even 12 hours ago ;p

LOL!  Cheesy

It's good to get back to the banter rather than the DDoS carnage.

Thanks for all your help with that Eleuthria, fantastic work, hope you're enjoying some well-deserved sleep now  Wink

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October 02, 2013, 04:30:05 AM
 #4079

well havent been over 16 since 10673

Which wasn't even 12 hours ago ;p

LOL!  Cheesy

It's good to get back to the banter rather than the DDoS carnage.

Thanks for all your help with that Eleuthria, fantastic work, hope you're enjoying some well-deserved sleep now  Wink

Agreed, great work!  I even found a block in the midst of the attack.  And it looks like most miners are back on board now.
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October 02, 2013, 04:48:30 AM
 #4080

I need more Power!


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