21,471 reputation
12449
bio website ripple.com
location Oakland, CA
age 44
visits member for 3 years, 2 months
seen 32 mins ago

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


Aug
25
comment ping works but ssh fails
Talk to the administrator of the router/switch.
Aug
21
comment Setup CNAME for multiple sub domains
A problem description that consists only of "nothing works" is really not helpful. How are you testing? What results are you getting?
Aug
20
comment GMail detecting mail as spam
109.98.21.30 is in UCEProtectL3. I doubt that matters.
Aug
20
comment Run sshd on multiple ports but different domains
@Tim That's impossible. How would the server know whether the domain was specified with or without the prefix? That's like trying to tell if someone calling you looked up your phone number in print or online when the listed number is the same in both cases. All you know is that your phone is ringing.
Aug
20
comment GMail detecting mail as spam
The Message-ID looks suspicious.
Aug
8
comment Can I have my DNS server and my web server on the same IP?
Short answer: yes.
Aug
4
comment Is my FTP account compromised?
@developer It certainly can be. But more likely the server just created a self-signed certificate by default.
Aug
4
comment ethernet switch makes network down
@MRamezani Confirm that none of the workstations have more than one Ethernet connection. Perhaps some fool has tried to put a computer on "both networks" and formed a loop in the process.
Aug
4
comment Is my FTP account compromised?
It's the server's certificate. The idea is that encryption with no authentication or MITM protection is better than nothing.
Aug
4
comment ethernet switch makes network down
What do each of the cables you are connecting to the switch go to? Be as precise as possible.
Aug
2
comment Why can't apache block visitors by IP address?
Maybe it's because the Directory directive is for a path that's outside of the site's root? That definitely seems like a mistake, but I'm not sure what consequences it would have.
Aug
2
comment Why can't apache block visitors by IP address?
You're 100% positive the URL contains /mysite.com/ and not a www or anything else in there?
Aug
1
comment Why can't apache block visitors by IP address?
How are you testing? What URL are you using?
Jul
31
comment What is the difference between a HBA card and a RAID card?
It used to be that HBAs typically didn't offload and RAID controllers always did. But then chipset manufacturers decided to announce that they had "RAID controllers" on their chipsets (even though there was no offloading) and some manufacturer decided "HBA" sounded like a cool name for their accelerators.
Jul
31
comment Why are only 16 GB of memory usable on our server?
Surely the person who performed the firmware upgrade could have. But whatever.
Jul
31
comment Why are only 16 GB of memory usable on our server?
memtest86+, Linux bootable CD, ...
Jul
31
comment Why are only 16 GB of memory usable on our server?
You should have tested with some software other than Windows to determine if it was a software problem or a hardware/BIOS problem. That would have saved you some time and allowed us to rule out Windows immediately.
Jul
29
comment How to setup a VLAN that spans across both Hp 1810g and hp 2920G
It's really not clear exactly what your issue is. When you say "I fail to see a machine on the tagged vlan", what does that mean? Where are you looking from?
Jul
10
comment email sent from my server shows up as spam
@chaoskreator Yes. Since you control fluidvector.com's SPF records.
Jul
7
comment Why is my RAID1 read access slower than write access?
Simple answer: Read requires waiting for results, write does not.