308 reputation
17
bio website kylheku.com
location Vancouver, Canada
age
visits member for 2 years, 2 months
seen Jul 9 at 23:19

Check out the TXR language http://www.nongnu.org/txr


Jun
20
comment Illegal activities prevention system (child pornography, animal cruelty, …)
@squllman When have "legal channels", ever, in the history of mankind, encouraged anyone to hold a pow-wow on anything with their friends, customers, neighbors, ...
Jun
20
comment Illegal activities prevention system (child pornography, animal cruelty, …)
@squillman Why not? Child porn is not a loaded gun in your face! "There seems to be child porn on the server in such and such directories and files. I've taken the box offline. Only you and I know. Please deal with this and let me know." Sounds simple enough. Do not drag the police state in on your own customers; they could be innocent. How do you know the box wasn't hacked so that they are wrongfully implicated? It's gonna disrupt your business too; your server will probably be seized even though you did nothing.
Jun
20
comment Illegal activities prevention system (child pornography, animal cruelty, …)
Do you rent these servers for hosting? Only if the servers are hosting materials for public access will the contain such materials in plain text. If the servers only store the material, the users can evade all your detection attempts by storing in encrypted form. You can't even tell what is an image file and what isn't.
Jun
12
comment Why can't all zeros in the host portion of IP address be used for a host?
I don't understand the point of the last paragraph. Yes, a destination IP is ANDed, and so what? 192.168.0.0 gets ANDed and correctly matches the subnet route 192.168.0.0/255.255.255.0. Then if we form the inverse of the mask 0.0.0.255, and AND with the address, then we correctly extract the host address of 0. Zero does not break under masking.
Jun
12
awarded  Critic
Jun
12
comment Distinguishing spam from google servers
@EEAA Turns out, I had already turned on SPF long ago. The particular messages I've received lately actually pass SPF, though! The issue is different; these are backscatter messages generated by some bounce robot at Google. The envelope sender is peculiar to that robot, and its sending domain is of course allowed for the IP address. Publishing my SPF (which I had neglected to do, but is now done and working!) might possibly protect me against such backscatter. I'm also blocking SMTP traffic from that particular "bounce bot" by its sender domain.
Jun
11
comment Distinguishing spam from google servers
@kasperd Well, obviously I care about separating false positives from spam regardless of the ratio.
Jun
11
awarded  Scholar
Jun
11
accepted Distinguishing spam from google servers
Jun
11
comment Distinguishing spam from google servers
Roger. But I'm now making it a priority to publish an SPF for my domain before dealing with this.
Jun
11
comment Distinguishing spam from google servers
Thanks a lot. So with SPF, basically we can have information, for a sender domain with a SPF record, that "yes, this domain routes through google".
Jun
11
comment Distinguishing spam from google servers
@HåkanLindqvist I don't want to waste my time reporting anything to Google.
Jun
11
asked Distinguishing spam from google servers
Nov
26
answered Sending thousands of email to employees (Exchange)
Nov
25
comment What IP Blocks does ChinaNet.com own?
^Of course, should be "Find all ipv4 entries", not ipvr.
Nov
25
comment What IP Blocks does ChinaNet.com own?
Everything you need to know is in this file: ftp://ftp.apnic.net/apnic/stats/apnic/delegated-apnic-extended-latest Find all ipvr ranges where the country is CN. Each one gives you the base addresses plus number of addresses. I use a script to turn this into iptables rules. The script has a list of whitelisted countries; all else is blocked from contacting port 25.
Nov
25
awarded  Supporter
Nov
25
comment What IP Blocks does ChinaNet.com own?
What IP blocks belong to ChinaNet cannot be supported by facts, references, and requires opinionated discussion? Really now ...
Oct
9
comment How do I write man pages?
I do not agree with Caleb. This is the web. The web is based on links, and stackexchange does not carry any special exception to this. Copying content is counterproductive. Whatever bad thing can happen to that page or document can also happen to this one. We cannot hoard scraped copies of all content just because the rest of the web might disappear. (Leave that job to sites like the wayback machine).
Sep
30
revised Why is it a bad idea to use a customer email as the from address
added 38 characters in body