22,408 reputation
12451
bio website ripplelabs.com
location Oakland, California
age 45
visits member for 3 years, 7 months
seen yesterday

I am Chief Cryptographer at Ripple Labs and one of the architects of the Ripple payment system.


Dec
19
comment unable to connect to the aws ec2 instance,Host key verification failed
You have to tell us the exact actual errors you got. Telling us what one of the errors was like is not helpful.
Dec
19
comment Automatic TCP connection slowering (shaping)
You forgot to ask a question. You also forgot to tell us how you wanted to do this. (In a firewall? On a host? In a router?)
Dec
19
answered Linux: Interface statistics missing packets?
Dec
18
answered Some questions on UDP send receive buffer, and networking
Dec
17
comment Can I use an SSD as Cache to a NAS?
What OS are you using? What protocol are you using to access the NAS?
Dec
16
answered Can I have TCP timouts up to 10-20 minutes?
Dec
16
answered Why so many ARP requests on the network with Windows 7 (using Network Monitor)?
Dec
14
answered Wake on lan can public “random person” wake up my web server to view web page
Dec
13
answered How much power draws a redundant PSU?
Dec
13
comment How do I speed up and cache mmap file access over NFS on Linux?
NFS caching with CacheFS will make things worse in his case. His local disks are likely slower than his network.
Dec
13
answered Can't connect to port 25 from all computers
Dec
13
comment Can't connect to port 25 from all computers
There is no reason an ordinary user should ever be connecting to your mail server on port 25. Port 25 is for one mail server to connect to another mail server with which it has no previous arrangements.
Dec
13
comment Can ONE dhcp server serve 2+ network ip range
Are these two physically distinct subnets? Are they VLANs? Do they share an Ethernet segment? We need to understand your network topology to give you a useful answer.
Dec
11
comment Is this server setup efficent?
Solution to what? You forgot to state what the problem is. What's wrong with making www.mydomain.com a CNAME for your dyndns name?
Dec
11
comment iptables misconfiguration is blocking outgoing connections
No. There's no rule to allow the packets in. Sure, you can send out the packets needed to establish the connection, but if your incoming rules block the returning packets, the connection won't actually work.
Dec
11
answered iptables misconfiguration is blocking outgoing connections
Dec
11
comment How does hostname relate to IP address on a server with multiple public IPs?
Why are you trying to separate the different names to different IPs? You've started your question with a proposed solution without telling us what problem you're trying to solve. You won't get good answers that way.
Dec
9
comment Bandwidth efficient software RAID
It depends completely on the type of data you're storing and the usage patterns.
Dec
9
answered Number of logical processors per VM?
Dec
9
answered Bandwidth efficient software RAID