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Topic: NXT :: descendant of Bitcoin - Updated Information - page 2213. (Read 2761629 times)

legendary
Activity: 1372
Merit: 1000
Quote
I'd like to run the Nxt server in a remote VPS for forging.  I'm concerned about the security of my passphrase.  My plan is to destroy/recreate the VPS whenever I need to unlock my account in order to minimize the risk.  Can my passphrase be stolen if my VPS is compromised *after* it is unlocked?

Quote
CfB has mentioned that if one gets access to the memory of Java Virtual Machine then your passphrase would be exposed.

https://bitcointalk.org/index.php?topic=345619.msg4116705;topicseen#msg4116705

That makes forging a *very* risky endeavor!

Please correct me if I'm wrong, but I don't think this type of vulnerability exists in any of the other coins as long as the wallet is encrypted.
member
Activity: 98
Merit: 10
Should hosts that are lucky to get into WellKnownPeers line turn on hallmark protection or off?

No idea. Try both ways.

ok
legendary
Activity: 2142
Merit: 1010
Newbie
Should hosts that are lucky to get into WellKnownPeers line turn on hallmark protection or off?

No idea. Try both ways.
legendary
Activity: 2142
Merit: 1010
Newbie
Would other nodes be able to connect if allowedbothosts is set to localhost?
Does NXT now distinguish between dumb zombies' requests and valid host?

allowedBotHosts works for API requests only.
Current version doesn't filter zombies. Hallmark is supposed to be used for that.
legendary
Activity: 1199
Merit: 1047
Quote from: Timetwister

The client is what I see when going to localhost:7875, right? I have tried to delete blocks.nxt and transactions.nxt, and when I open the browser and unlock (creating another address...), most recent block is 23254 and it doesn't update from there.

By the term "client" I meant the program that you run in black window with java -jar command. Just unzip the 0.4.4 version of it in the new folder and run it from there.

Oh, I see what could be wrong. When I execute start.bat, a black window appear and it instantly dissappears. Do you know what can be the cause of that?

Sorry for making so many noob questions.
member
Activity: 70
Merit: 10

"The matrix has you"

What's the matter?
legendary
Activity: 2142
Merit: 1010
Newbie
Will the blocks.nxt and transactions.nxt files always get bigger and bigger?

Yes, but after annual shrinking they'll become much smaller.
member
Activity: 98
Merit: 10
Should hosts that are lucky to get into WellKnownPeers line turn on hallmark protection or off?
member
Activity: 98
Merit: 10
Would other nodes be able to connect if allowedbothosts is set to localhost?
Does NXT now distinguish between dumb zombies' requests and valid host?
legendary
Activity: 2142
Merit: 1010
Newbie
I use a python cript to communicate with the client, checking its status,
whenever I run the script, I got the following messages.
which parameters should I set to make it not response to local requests?

Code:
2013-12-24 22:48:16.042:WARN:oejs.DoSFilter:qtp14109749-79: DOS ALERT: Request delayed=1000ms ip=0:0:0:0:0:0:0:1,session=null,user=null
2013-12-24 22:48:17.390:WARN:oejs.DoSFilter:qtp14109749-78: DOS ALERT: Request delayed=1000ms ip=0:0:0:0:0:0:0:1,session=null,user=null
2013-12-24 22:48:18.920:WARN:oejs.DoSFilter:qtp14109749-80: DOS ALERT: Request delayed=1000ms ip=0:0:0:0:0:0:0:1,session=null,user=null
2013-12-24 23:06:50.792:WARN:oejs.DoSFilter:qtp14109749-124: DOS ALERT: Request
delayed=1000ms ip=0:0:0:0:0:0:0:1,session=null,user=null

In web.xml:

   
      DoSFilter
      org.eclipse.jetty.servlets.DoSFilter
      
         maxRequestsPerSec
         3000
      

      
         delayMs
         1000
      

      
         trackSessions
         false
      

      true
   

legendary
Activity: 2142
Merit: 1010
Newbie
Guys, change numberOfConnectedPublicPeers in web.xml from 10 to 100 if u stuck. And try to disabled hallmark protection, this may also help.

Edit: The problem is that default value of numberOfConnectedPublicPeers is small and if none of the connected peers have recent blocks then u won't get them too.
member
Activity: 88
Merit: 10
Missclicked, sorry. Was sorted while writting Smiley
full member
Activity: 126
Merit: 100
@CFB
This version seems really stable, isn't?

I think that now 512MB nodes could work better, without freezing.

I think 512MB nodes could work all the time if we could restart the java process every once in a while. Is there any risk or blockchain corruption by scheduling a cron job to do that? Anyone know? If it is ok to do so, I can write up a guide for people on how to implement it.

My little node
  • checks every minute (cron) if nxt is running and restarts it if not
  • hourly restores chain from old nxtfiles.zip and reboots server

It is not forging, but making it working is more important to the network
I wrote about it here


@CFB
This version seems really stable, isn't?

I think that now 512MB nodes could work better, without freezing.

I think 512MB nodes could work all the time if we could restart the java process every once in a while. Is there any risk or blockchain corruption by scheduling a cron job to do that? Anyone know? If it is ok to do so, I can write up a guide for people on how to implement it.

my crontab script:
Code:
1 1 * * *  ps -ef|grep java|grep start|awk '{print $2}'|xargs kill -2




Thanks!
member
Activity: 114
Merit: 10
Just trying to get some idea of sizing here and what is 'significant' in the world of NXT.  May be impossible to say right now with such crazy fluctuations; but what is a "big fish" in NXT?

I'm used to mining around 2 LTC/day.  If I have 10,000 NXT is that going to forge something worthwhile?  I'm hesitant to dump 1-2 more BTC in until everything stabilizes but I don't want to be a small player.

I have about 20k nxt,
mined for about 10 days and got nothing

Thanks...I'll consider that.  I spent 20 LTC to get my current 10k nxt; seems expensive but I want to get in early, no doubt..
full member
Activity: 266
Merit: 100
NXT is the future

Running smooth  Grin

   
23901      2576421397261863186      24-12-2013 16:29:22   
0      0 + 0      0 B   
1      1651332693446975601      648 %   
sr. member
Activity: 297
Merit: 250
Will the blocks.nxt and transactions.nxt files always get bigger and bigger?
omo
full member
Activity: 147
Merit: 100
I use a python cript to communicate with the client, checking its status,
whenever I run the script, I got the following messages.
which parameters should I set to make it not response to local requests?

Code:
2013-12-24 22:48:16.042:WARN:oejs.DoSFilter:qtp14109749-79: DOS ALERT: Request delayed=1000ms ip=0:0:0:0:0:0:0:1,session=null,user=null
2013-12-24 22:48:17.390:WARN:oejs.DoSFilter:qtp14109749-78: DOS ALERT: Request delayed=1000ms ip=0:0:0:0:0:0:0:1,session=null,user=null
2013-12-24 22:48:18.920:WARN:oejs.DoSFilter:qtp14109749-80: DOS ALERT: Request delayed=1000ms ip=0:0:0:0:0:0:0:1,session=null,user=null
2013-12-24 23:06:50.792:WARN:oejs.DoSFilter:qtp14109749-124: DOS ALERT: Request
delayed=1000ms ip=0:0:0:0:0:0:0:1,session=null,user=null
2013-12-24 23:06:52.540:WARN:oejs.DoSFilter:qtp14109749-124: DOS ALERT: Request
delayed=1000ms ip=0:0:0:0:0:0:0:1,session=null,user=null
2013-12-24 23:06:54.078:WARN:oejs.DoSFilter:qtp14109749-124: DOS ALERT: Request
delayed=1000ms ip=0:0:0:0:0:0:0:1,session=null,user=null
2013-12-24 23:07:15.305:WARN:oejs.DoSFilter:qtp14109749-124: DOS ALERT: Request
delayed=1000ms ip=0:0:0:0:0:0:0:1,session=null,user=null
2013-12-24 23:09:15.310:WARN:oejs.DoSFilter:qtp14109749-125: DOS ALERT: Request
delayed=1000ms ip=0:0:0:0:0:0:0:1,session=null,user=null
2013-12-24 23:09:39.602:WARN:oejs.DoSFilter:qtp14109749-125: DOS ALERT: Request
delayed=1000ms ip=0:0:0:0:0:0:0:1,session=null,user=null
2013-12-24 23:11:07.456:WARN:oejs.DoSFilter:qtp14109749-135: DOS ALERT: Request
delayed=1000ms ip=0:0:0:0:0:0:0:1,session=null,user=null
2013-12-24 23:11:25.750:WARN:oejs.DoSFilter:qtp14109749-138: DOS ALERT: Request
delayed=1000ms ip=0:0:0:0:0:0:0:1,session=null,user=null
2013-12-24 23:11:39.625:WARN:oejs.DoSFilter:qtp14109749-135: DOS ALERT: Request
delayed=1000ms ip=0:0:0:0:0:0:0:1,session=null,user=null
2013-12-24 23:11:51.354:WARN:oejs.DoSFilter:qtp14109749-135: DOS ALERT: Request
delayed=1000ms ip=0:0:0:0:0:0:0:1,session=null,user=null
sr. member
Activity: 321
Merit: 250
Wouldn't it be a perfect test NOT to use downloaded *.nxt files?
Or is it just too risky at the moment?

Not risky but inconvenient. Next time we should just upgrade one by one.

...I just used the *.nxt files from where 0.4.2 got stuck.
0.4.4 continued from there without further intervention. Restarting 0.4.2 could not fix that (I tried that repeatedly)!
Looks like an improvement and 0.4.4 is still up to date on a chain - maybe even the 'right' one Wink
hero member
Activity: 784
Merit: 500
guys I am always frozen and I keep deleting and restarting with no avail. COMEONE I want to forge for god sake....

use the new version 0.4.4
hero member
Activity: 924
Merit: 1001
Unlimited Free Crypto
guys I am always frozen and I keep deleting and restarting with no avail. COMEONE I want to forge for god sake....
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