1,236 reputation
68
bio website
location Albany, NY
age 38
visits member for 4 years, 2 months
seen Oct 17 at 3:13

Just your standard geek. Part programmer, part network wonk..


Aug
22
comment Mysql remote connections very slow - host lookups already disabled
What kind of network is between is between client and server? How many hops? what is the latency? Any VPNs?
Aug
19
awarded  Enlightened
Aug
19
awarded  Nice Answer
Aug
16
comment Long connecting, wait and receive time for my Apache VPS. Can I reduce them?
the other thing it could be is Crappy VPS provider. Since it is by nature shared. It could be everything else is overloaded .
Aug
16
comment Long connecting, wait and receive time for my Apache VPS. Can I reduce them?
make sure HostnameLookups Off are off as well
Aug
5
answered Sharing LINUX NFS Folder on Windows Server
Aug
5
comment Can I have 2 A records for the same domain
yes, but as others have said, it will randomly send traffic to both, and can totally break sessions and other thing that rely on state being maintained on the server. as for which one it visits. bind will return the A records in random order and in most cases the browser just takes the top one. But also if one goes down, is slow. X% (50 in a perfect world) of the requests will go to the down/overloaded server
Aug
5
awarded  Informed
Aug
5
comment SERVFAIL messages when we query against recursive name server
try running dig +trace xx.yy.com to follow the delegation and see where it fails/which server is returning the SERVFAIL. and does the NS server at aa.bb.com have a zone for xx.yy.com ?
Jul
30
awarded  Yearling
Jul
28
comment svnserve seems to write files as root. How can I give access to the same repository via svnserve and apache?
I am just curious as to what is not elegant about modifying the startup script to make the daemon run as the correct user?
Jul
24
answered Computer gets IP from DHCP server but has no internet connection
Jul
24
comment Computer gets IP from DHCP server but has no internet connection
sorry missed the eth1 above. The problem is your ip scheme (and that you have 192.168.20.1 on both eth0 and eth1). Change your subnet on eth1 and you should work fine.
Jul
24
comment Computer gets IP from DHCP server but has no internet connection
also you can't have 2 dhcp servers giving out different information on the same Layer 2 network Just doesn't work and int looking at your config are you trying to NAT on the same interface, it will not work. what I would do is this. move the 6 worker nodes to a different layer 2 network, and hook them into eth1 on the head node. Give them a different RFC 1918 address (10.x ) and then all of your stuff above would work. BUt with only 1 interface and the overlapping subnets/ 2 dhcp servers it will not work.
Jul
24
comment Computer gets IP from DHCP server but has no internet connection
what is subnet mask on the 192.168.1.x network? if you are getting an ip of 192.168.20.1 from that network the subnet mask is probably 255.255.0.0? and it looks like you are trying to nat with overlapping subnets. if you change your downstream dhcp config to use a different set of RFC1918 IPS does it work (10.10.0.0/24 for example).
Jul
24
answered Local dns server acts unreliably
Jul
22
comment Moved IP addresses to other server, no network internally anymore
can you ping the new ip from the server they are on? if yes, have you checked the arp tables on the server (arp -a) to make sure they can see each other at Layer 2?
Jul
22
answered mx gmail.com accept and rejects?
Jul
22
comment How to set up port forwarding on a NETGEAR ProSafe™ Gigabit 8 Port VPN Firewall FVS318N?
@marcgg what I mean is if you are on 192.168.1.x and you are trying to go to external.ip.addr:3000 some NAT devices cannot hair pin the traffic so the nat might be working fine from oustside (As demonstrated by the your test, but not from inside. AKA hairpinnig since it the router/firewall/etc is basically talking to itself.
Jul
22
comment How to set up port forwarding on a NETGEAR ProSafe™ Gigabit 8 Port VPN Firewall FVS318N?
Are you trying to test it from behind the firewall? A bunch of firewalls will not hairpin traffic?