4,700 reputation
1430
bio website jeddaniels.com
location California
age 36
visits member for 4 years, 9 months
seen Dec 24 at 22:49

"All right, guys, uh, listen. This is a blues riff in "B", watch me for the changes, and try and keep up?"


Feb
7
comment Why does traceroute take much longer than ping?
A better analogy would be that you send out 30 drivers, telling each of them to head towards New York, but each of them must turn around and come back at the first crossroads, the second crossroads, the third crossroads, and so on, all the way up to thirty crossroads (hoping that there are less than 30 between SF and NY).
Feb
7
comment Why does traceroute take much longer than ping?
@dbasnett Originally, traceroute sent outgoing packets as UDP, and the return packets are of course ICMP TTL exceeded messages. Windows and now other traceroute programs use ICMP echo request packets for the outgoing. Typically when people refer to UDP traceroute or ICMP traceroute it is these outgoing packets that they are referring to, since BOTH mechanisms rely on ICMP TTL exceeded messages coming back to the sender from hops along the route.
Nov
27
comment Can you have more than one ~/.ssh/config file?
Have each user login to the bastion host with their own username. Also, what are you putting into the config file that requires an entry for each host? Can't you set some defaults that are common?
Nov
8
comment Translate incoming DNS responses
Is it just one domain that you care about when it is failing? More details on what 3rd party software might be helpful in proposing a solution.
Nov
8
comment iSCSI - what's faster?
1 and 3 are effectively the same if only one initiator exists. I think your question "why not get a DAS" is answered with "so we can add a switch and other initiators later".
Sep
25
comment VirtualBox VT-x virtualization already in use
And if you do downvote, PLEASE explain why, so the original poster can fix it and better the site and community.
Sep
25
comment VirtualBox VT-x virtualization already in use
Are the downvotes because the question was asked in the wrong place? Or because the question is worded badly? I the question is likely to get migrated to another stackexchange site, don't downvote it simply for that reason, because the votes will transfer too.
Aug
25
comment vmware unique cpu identifier
What about multiple CPUs on the same host? If you do find an identifier, will it change if the hypervisor switches you to one of the other CPUs? I'd imagine that there is no way around this without pinning a VM to specific CPUs. I'm hoping someone has a good answer, because I've spent a lot of time researching this myself. The best answer I've been able to find is to add something to the config on the host that the VM can query via vmware-tools (but you have to have total control over the environment).
Jul
29
comment Juniper NetScreen NS-5GT traffic monitoring
"There is a good SNMP based interface monitoring dashboard widget" got a link or a name? I'd love to check it out.
Jun
25
comment eth0 and eth1 both assigned same IP on boot
The output of ifconfig -a might be helpful.
Jun
15
comment set-up webserver with two nics
Of course the answer is to Read The Fine Manual, but here is a link with instructions on setting up static routes in Centos 6 (which is based on RedHat 6). docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/6/html/…
Jun
13
comment set-up webserver with two nics
If there is another network inside of 192.168.26.1, he'll need a route to that. Otherwise, +1, cause this is the correct answer.
Jun
13
comment set-up webserver with two nics
Is there another network inside of "Gateway to internal LAN"?
Jun
11
comment Performance Monitor in Linux
I don't think this is a duplicate of the linked question, as he is clearly looking for something simple. I think this is just a case of "I'm not familiar with the basic tools", and not "I need to implement a monitoring infrastructure".
Jun
11
comment ping: unknown host google.com
-1: This question is poorly worded and doesn't explain the actual problem is. I'd edit it myself to correct, but I can't really figure it out enough to even do that. I'll remove the minus one once the question is corrected to be clear enough to determine what it is actually asking.
Jun
5
comment how I can Specifying tcpreplay speed
+1, but wouldn't .086 round to .09 instead of .08? Also keep in mind that depending on the actual packets being replayed, they may not round evenly into the time frame/speed you are attempting to achieve.
May
20
comment FreeBSD performance tuning. Sysctls, loader.conf, kernel
This is one of my favorite posts, but I'd really love to see more guidelines about when to adjust some of the various settings posted above. For example, the Shared memory entry towards the top of the sysctl.conf section: how do I know if I want to increase it? How far should I increase it? There are too many different entries here to simply do trial and error with each one. Thanks!
Apr
7
comment Why need to send ARP to ask for MAC address when IP address is already unique?
What happens when station A changes network cards? Or when it adds another?
Apr
1
comment Ping “replies” from same computer with 'Destination host unreachable' (no route to other computer)
+1 I was wondering what the problem was. Wish I could double +1 for the mini wifi sniffing tutorial (I always just bust out kismet in a VM connected to a USB wifi adapter). Too bad srekel never came back to post what the real problem was.
Mar
23
comment XenServer: Editing clone configuration before boot
I'm sure there are good reasons, but I'm curious to hear more about why DHCP isn't an option. Thanks!