cip 004

Although Curl is powerful, but can only forge $_server["Http_x_forwarded_for", for most IP address detection procedures, $_server["REMOTE_ADDR"] is difficult to forge: The first is the client.php code. Copy the Code code as follows:$headers [' client-ip '] = ' 202.103.229.40 ';$headers [' x-forwarded-for '] = ' 202.103.229.40 ';$HEADERARR = Array ();foreach ($headers as $n = = $v) {$HEADERARR [] = $n. ': '. $v;}Ob_start ();$ch = Curl_init ();curl_setopt ($ch, Curlopt_url, "http://localhost/curl

How does php obtain the local IP address ?? O (distinct _ distinct) O ~ How can I obtain the IP address of the local machine when I use the php command to execute the php file? It turns out that $ _ SERVER [] is not easy to use. thanks to O (cost _ priority) O ~, If you run on your computer, it's nothing more than 127.0.0.1. if you run on a virtual space or server, how does php get the IP address of the local machine ?? O (distinct _ distinct) O ~ How can I obtain the IP address of the local mac

Load Cluster LVS_DR Model Principle :ClientCipRequestWebresources, must go throughDirectorforwarded toRs, whileRsresponding to a request to a clientCipmust not go throughDirectorbecause the client's request was sent to theVipto respond to requests from the client, which requiresDirectorand theRsto share betweenVip. Directorof theDIP,RS1of theRIP1,RS2of theRIP2must be in the same network segment, either public or private, communication between them is based onMacaddress. RsIt's better to have a p

PHP Curl Forged IP Address and header information code example, Curlheader Although Curl is powerful, but can only forge $_server["Http_x_forwarded_for", for most IP address detection procedures, $_server["REMOTE_ADDR"] is difficult to forge: The first is the client.php code. Copy the Code code as follows:$headers [' client-ip '] = ' 202.103.229.40 ';$headers [' x-forwarded-for '] = ' 202.103.229.40 ';$HEADERARR = Array ();foreach ($headers as $n = = $v) {$HEADERARR [] = $n. ': '. $v;}Ob_start

(); Ob_clean (); Echo $out; And then the server.php. The code is as follows: function GetIP () { if (!emptyempty ($_server["Http_client_ip")) $cip = $_server["Http_client_ip"]; else if (!emptyempty ($_server["http_x_forwarded_for"])) $cip = $_server["Http_x_forwarded_for"]; else if (!emptyempty ($_server["REMOTE_ADDR"])) $cip = $_server["REMOTE_ADDR"]; Else $

First word: masquerade indicates the meaning of makeup disguise... NatTest Machine: VM1 VM2 vm3 three virtual machine VM1 has a dual Nic, a connection to the Internet a host-only connection to the Intranet, the network structure of the LVS--NAT environment is deployed Both VM2 and vm3 are in the host-only network. Lab physical structure: Lab diagram and address Distribution Description: the IP address of clinet is CIP. In this experiment, the VIP addr

function GetIP () {if (!empty ($_server["Http_client_ip")) {$cip = $_server["Http_client_ip"];} elseif (!empty ($_server ["Http_x_forwarded_for"])){$cip = $_server["Http_x_forwarded_for"];} ElseIf (!empty ($_server["REMOTE_ADDR"])) {$cip = $_server["REMOTE_ADDR"];} else{$cip = "Cannot get!"";} return $

("http_x_forwarded_for"); } ElseIf (getenv ("Http_client_ip")) { $ip = getenv ("Http_client_ip"); } ElseIf (getenv ("REMOTE_ADDR")) { $ip = getenv ("remote_addr"); } else { $ip = "Unknown"; } Echo $ip; Method 5: if (getenv (' http_client_ip ')) { $onlineip = getenv (' http_client_ip '); } elseif (' getenv For ') { $onlineip = getenv (' http_x_forwarded_for '); } elseif (getenv (' remote_addr ')) { $onlineip = getenv (' remote_addr '); } else { $onlineip = $HTTP _serv

request Dip:ds and RS communicate with each other RIP: Back-end server IP Cip:client IP Client IP CIP How the Lvs-nat type works: When a user requests to reach the director Server, the requested data message is first reached to the prerouting chain in the kernel space. At this point the source of the message IP for the CIP, the target IP for VIP prerouting check found that the target IP packet is local,

destination IP of the request message 1. Lvs-nat mode Working principle:主要是数据到达VS后，VS根据VSIP和调度算法，去服务地址池中去查找哪些节点提供此服务，然后将数据包的Dip改为RSip，可能还会改变Dport。然后RS上的网关需指向DIP。VS最终对用户做响应Application Scenarios:1、此模式对RS修改较少， 2. LVS-DR mode Working principle:主要是数据回去不经过VS，CIP数据到网关，然后网关去找VIP地址，数据到达VIP之后，VIP根据调度算法，转发给响应的RIP，此时目标MAC构建为RIP的MAC地址，此时数据转发出去，不经过TCP/IP的ip层检查。不会经过网关，通过交换机时查看mac表，然后转发给RIP，因此VS和RS必须在同一个交换机下，但是不用在同一个ip网络中，然后RIP收到ip地址，查看mac是自己的

student ID and name of other students whose courses are identical to those of "1002; select S# from SC where C# in (select C# from SC where S#='1002') group by S# having count(*)=(select count(*) from SC where S#='1002');15. Delete the SC table record for learning "ye ping; Delect SC from course, Teacher where Course. C # = SC. C # and Course. T # = Teacher. T # and Tname = 'peiping ';16. insert some records into the SC table. These records must meet the following requirements:

requirements: Student IDs, 2, and, Average score of course no; Insert SC select S #, '002 ', (Select avg (score) From SC where C # = '002') from Student where S # not in (Select S # from SC where C # = '002 '); 17. Show the "Database", "enterprise management", and "English" course scores of all students based on average scores in the following format: Student ID ,, database, enterprise management, English, number of valid courses, average effective score Select s # as student ID , (SELECT

@ ABC rebase] $ git Branch* MasterTopic[Rocrocket @ ABC rebase] $ VI Roc. c[Rocrocket @ ABC rebase] $ git commit-a-m "master: 003 ″Created commit 91a7ffc: MASTER: 0031 files changed, 1 insertions (+), 0 deletions (-)[Rocrocket @ ABC rebase] $ VI Roc. c[Rocrocket @ ABC rebase] $ git commit-a-m "master: 004 ″Created commit b81fbc3: MASTER: 0041 files changed, 1 insertions (+), 0 deletions (-)[Rocrocket @ ABC rebase] $ cat Roc. cInt main (){Printf ("MAS

(*) = (select count (*) from SC where S # = '123 ');15. Delete the SC table record for learning "ye ping;Delect SCFrom course, TeacherWhere Course. C # = SC. C # and Course. T # = Teacher. T # and Tname = 'peiping ';16. insert some records into the SC table. These records must meet the following requirements: Student IDs, 2, and,Average score of course no;Insert SC select S #, '002 ', (Select avg (score)From SC where C # = '002') from Student where S # not in (Select S # from SC where C # = '00

valid courses, average effective scoreSelect s # As student ID, (Select score from SC where SC. s # = T. S # And C # = '004 ') as database, (Select score from SC where SC. s # = T. S # And C # = '001') as Enterprise Management, (Select score from SC where SC. s # = T. S # And C # = '006 ') as English, Count (*) as valid course count, AVG (T. Score) as average scoreFrom SC as tGroup by S #Order by AVG (T. Score)18. query the highest score and lowest s

#, '002 ', (Select avg (score)From SC where C # = '002') from Student where S # not in (Select S # from SC where C # = '002 ');17. Show the "Database", "enterprise management", and "English" course scores of all students based on average scores in the following format: Student ID ,, database, enterprise management, English, number of valid courses, average effective scoreSelect s # as student ID, (SELECT score from SC where SC. S # = t. S # AND C # = '004