Sql server security : User 'SA' -


since few week, there lot of attempt of connection on user 'sa' on database, sql server.

login failed user 'sa'. reason: password did not match login provided. [client: xxx.xx.xx.xx]

the ip adresses china. think hacker try connect database.

what best practices protect user 'sa' against hackers ?

i need connect database sql server authentification mode. if disable user 'sa', can still connect sql authentification ?

thanks advices.

you may disable sa , enable connect internal network. either can put db behind firewall.


Comments

Post a Comment

Popular posts from this blog

Linux vanilla kernel on QEMU and networking with eth0 -

i have downloaded , compiled vanilla linux kernel (3.7.1) used busybox ramdisk booted using qemu. qemu command line qemu-system-i386 -kernel bzimage -initrd ramdisk.img -append "root=/dev/ram rw console=ttys0 rdinit=/bin/ash" -nographic -net nic -net user everything goes well. however, can't use networking on vanilla kernel busybox. 'ifup eth0' tells me / # ifup eth0 ip: siocgifflags: no such device i googled internet can' clue... advice nice thank in advance. most there no driver (in example should e1000) loaded or device has name. in /sys/class/net/ should find listing of available net-devices. if there none (besides lo) driver not loaded. in qemu monitor type "info pci" , show pci-address of ethernet card. should this: ... bus 0, device 3, function 0: ethernet controller: pci device 8086:100e ... this device corresponds /sys/devices/pci0000:00/0000:00:03.0/. files "vendor" , "device" must c...
Read more

rdbms - what exactly the undo information lives in oracle? -

some docs says, there "undo tablespaces" implies should create tablespace undo imformation. some docs says, there "undo segment" implies undo information lives in normal tablespaces , use of it's segment. so, undo information lives , organized? earlier releases of oracle database used rollback segments store undo. oracle9i introduced automatic undo management, simplifies undo space management eliminating complexities associated rollback segment management. oracle recommends (oracle 9i , on words) use undo tablespace (automatic undo management) manage undo rather rollback segments. when creating undo tablespace, these automatically created: n undo segments (based on sessions parameter value) named _syssmun$ owned public (usable ops configuration) not manually manageable
Read more

clojure - 'get' replacement that throws exception on not found? -

i'd access values in maps , records, throwing exception when key isn't present. here's i've tried. there better strategy? this doesn't work because throw evaluated every time: (defn get-or-throw-1 [rec key] (get rec key (throw (exception. "no value.")))) maybe there's simple method using macro? well, isn't it; has same problem first definition, if evaluation of throw happens later: (defmacro get-or-throw-2 [rec key] `(get ~rec ~key (throw (exception. "no value.")))) this 1 works letting get return value (in theory) never generated other way: (defn get-or-throw-3 [rec key] (let [not-found-thing :i_would_never_name_some_thing_this_021138465079313 value (get rec key not-found-thing)] (if (= value not-found-thing) (throw (exception. "no value.")) value))) i don't having guess keywords or symbols never occur through other processes. (i use gensym generate special value of...
Read more