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Aug
5
answered 3COM Switch dropping broadband
Jul
29
comment Is SNMP still used widely as of 2015?
Yes, the sequence diagrams show the different layers interacting in the processing of a single packet. With v3, a lot of things change, but TBH I've seen only few people use v3 so far.
Jul
29
comment Is SNMP still used widely as of 2015?
Storing the MIB in the user interface is not a huge drawback, because the UI needs additional information for presentation anyway, but it saves considerable amounts of space on embedded systems -- and the stateless protocol is a huge bonus too.
Mar
12
comment Why does strace return so many execve calls with ENOENT return code?
Also, there is no point in doing checks first. You would just generate one extra system call.
Dec
12
comment IPsec transport mode and MTU
Yes, it works fine. The router does NAT regularly, then wraps IPsec around it
Dec
12
comment IPsec transport mode and MTU
No, I'm using transport mode directly, without another tunnel protocol. I can see that in principle this should lead to two encrypted fragments (which is suboptimal but would work), however I see that the packet is not sent at all.
Dec
11
revised IPsec transport mode and MTU
added 180 characters in body
Dec
11
asked IPsec transport mode and MTU
Dec
11
comment Increasing the size of a 3ware 9650SE RAID5
Also, at that size, RAID-5 is a ticking time bomb IMO. With a 4-port controller, you don't have too many other options, but your ability to rebuild after a failure depends on none of the disks having even a single error.
Dec
11
comment Increasing the size of a 3ware 9650SE RAID5
IIRC the new drive becomes a hot spare automatically, which would mark it as "in use". Not an answer because I can't verify.
Dec
5
awarded  Popular Question
Dec
5
comment Linux - Is there a way to prevent/protect a file from being deleted even by root?
@psusi, it appears that I am very old. 2.0.40 still had it.
Dec
3
comment Linux - Is there a way to prevent/protect a file from being deleted even by root?
@Olivier, immutability also protects against deletion.
Dec
3
comment Linux - Is there a way to prevent/protect a file from being deleted even by root?
@Grant, yes, that exists in Linux as well.
Dec
2
comment Linux - Is there a way to prevent/protect a file from being deleted even by root?
@Grant, not if the Securelevel is set high enough. The boot process sets the securelevel to 2 before the network is enabled, so resetting the flag requires local machine access (but this means that files used in the boot process before that time need to be immutable as well).
Nov
28
awarded  Caucus
Oct
16
awarded  Yearling
Oct
16
answered Raid 1 across 3 partitions, what does it mean?
Oct
13
comment How to set the order of ipv6?
Good point. IIRC there is also the secondary flag if you want an address to be excluded here.
Oct
13
comment How to set the order of ipv6?
Linux uses longest common prefix to determine source address in the absence of a source address hint in the routing table.