368 reputation
110
bio website init.se
location Stockholm, Sweden
age 43
visits member for 2 years, 6 months
seen 7 hours ago

I'm a unix sysadmin, working as a consultant at Init AB (www.init.se). My main focus is unix security and PKI; I work a lot with the open-source CA system EJBCA.

Previous jobs include sysadmin in charge of security related systems at a large bank, and mail servers at a largish ISP, including handling abuse and spam issues.

Email address: jenny@init.se


Mar
24
revised Easy explanation of SSL client certificates for a developer
added clarification
Mar
24
revised Easy explanation of SSL client certificates for a developer
added 9 characters in body
Mar
24
answered Easy explanation of SSL client certificates for a developer
Mar
23
comment How to transform an hash into a usable password?
A number of years ago, the place where I worked had a similar app to set and get passwords for the servers. The app combined a random string (which was the same for all servers, and changed regularly) with the server's hostname and the username of the account to which the password applied. It was secure enough for our purposes, which is not to say that it would be secure enough for everyone.
Mar
23
revised How to deal with SSH keys in insecure environment
deleted 6 characters in body
Mar
20
revised How to deal with SSH keys in insecure environment
deleted 1 character in body
Mar
20
answered How to deal with SSH keys in insecure environment
Jan
5
awarded  Commentator
Jan
5
comment how does a site know it is me even after changing ip address and clearing cookie?
Do you get the same issue if you're using your smartphone as a tether to the cellular network?
Jan
5
comment how does a site know it is me even after changing ip address and clearing cookie?
If it blocks the OP even when they're connecting through TOR, it's unlikely to be the ISP's IP range that's the issue. Of course, they may be blocking known TOR exit nodes as well.
Dec
29
revised Import certificate into Windows key store
Formatting, some grammar, removed "thanks"
Dec
29
suggested approved edit on Import certificate into Windows key store
Dec
26
comment Can I “hide” the private key, while still allowing it to be used?
I also thought of another way of keeping the authorized_keys file safe, see the edit. (And yeah, this is one question that overlaps between Information Security and Server Fault - I don't think this is the wrong place but maybe there are two right ones.)
Dec
26
revised Can I “hide” the private key, while still allowing it to be used?
added another way to limit editing of the authorized_keys file
Dec
26
comment Can I “hide” the private key, while still allowing it to be used?
The list is in the man page for sshd, under the heading Authorized Keys Format
Dec
26
awarded  Yearling
Dec
26
answered Can I “hide” the private key, while still allowing it to be used?
Nov
28
comment Moving /boot to USB and Preventing booting from other USB devices (Allow boot from only one USB)
Second question: What is the purpose of disabling booting off of other USB devices? Since your disk is encrypted, those devices shouldn't be able to read it anyway, right? They could destroy the data, but not actually get at it - and if you have backups, the destruction isn't a big deal.
Nov
28
comment Moving /boot to USB and Preventing booting from other USB devices (Allow boot from only one USB)
Have you considered burning it to a CD instead and booting off of that?
Nov
26
answered What happens if a page with an invalid SSL cert responds with a 302 redirect to a page with a valid cert? Do you still get the warning?