40,402 reputation
473115
bio website teaparty.net
location Cambridge, United Kingdom
age 47
visits member for 4 years, 3 months
seen 35 mins ago

What's to say? Check my personal website for a touch more detail, if you want to. I've been a professional UNIX/network sysadmin since 1991, and currently sysadmin free software professionally through my own little company. A long time ago, I and a co-author wrote "Building Linux and OpenBSD Firewalls" (Wiley, 2000). That's it.


1d
comment How to connect a local network to IPv6 site / net?
Change ISPs to one that supports v6 natively. It's painful, sure, and will probably cost you more, but it's the only thing that will send a message to the big ISPs that v6 is needed for end-users, now.
2d
comment Possible to configure postfix for authenticated and non-authenticated sending?
You guess wrong. If no authentication hints are present for a domain (strong SPF record, DMARC, etc.) then nothing prevents anyone from sending emails claiming to be from that domain.
2d
revised Possible to configure postfix for authenticated and non-authenticated sending?
edited title
2d
revised how can I understand if IMagick is installed?
added 268 characters in body
2d
answered how can I understand if IMagick is installed?
2d
revised how can I understand if IMagick is installed?
edited tags
2d
comment how can I understand if IMagick is installed?
OS? Version? If Linux, distro?
2d
revised how can I understand if IMagick is installed?
edited title
2d
comment How is a single IP address load balanced?
@TuncayGöncüoğlu: please see my comment on your similar statement below.
2d
comment How is a single IP address load balanced?
@TuncayGöncüoğlu : that last statement is false. Google's DNS, probably the most famously anycast service on the internet, does indeed operate in multiple sites around the world, on a single IP address. You are right that single-site solutions exist that offer multiple servers behind a single IP address without anycast, and you describe that well above, but since the OP asked specifically about 8.8.8.8, I find ceejayoz's answer hard to fault.
Dec
23
comment Is my hard drive beginning to fail?
Possible duplicate of serverfault.com/questions/646578/is-my-hard-drive-failing .
Dec
23
answered How do I encrypt large (20Gb+) compressed files from a backup?
Dec
23
comment How do I encrypt large (20Gb+) compressed files from a backup?
@initall: ah, I see. Your comment was ambiguous - the "it" that you don't want to do after is splitting the file, not encrypting it. Understood. Then may I again suggest gpg, which works very well in pipelines?
Dec
23
comment How do I encrypt large (20Gb+) compressed files from a backup?
But you said you don't want to do that: "I ... don't want to do it afterwards for performance reasons".
Dec
23
answered Cause of error: Invalid (old?) table or database name 'lost+found'
Dec
23
comment How do I encrypt large (20Gb+) compressed files from a backup?
Is gpg out of the question? You also don't say how you're doing the backups, which makes it harder to recommend something that does the encryption on-the-fly whilst not making smaller pieces.
Dec
23
revised sudo : wildcard in user/group name
deleted 10 characters in body; edited tags
Dec
22
comment Publicly routable IPv6 linux container
Which RFC do you feel constrains all ipv6 subnet masks to be /64?
Dec
22
comment Should Port 25 be open?
a) yes, port 25 needs to be open. Whilst your own users may use 587 for authenticated relaying, the rest of the world will expect to contact you on port 25. b) how to secure an unspecified mail server is way too broad a topic for an SF question, in my opinion.
Dec
21
reviewed Approve MDADM not showing RAID5?