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RFC821-Simple Mail Transfer Protocol (SMTP) Chinese version-3

From: author :( 2001-11-2309: 08: 00) Step 2: forward the host to the target host R: 220BBN-VAX.ARPASimpleMailTransferServiceReadyS: HELOUSC-ISIE.ARPAR: 250BBN-VAX.ARPAS: MAILFROM: @ USC-ISIE.ARPA: JQP @ MIT-AI label: SMTP from: Author: (09:08:00) Step 2: forward the host to the target host R: 220 BBN-VAX.ARPA Simple Mail Transfer Service Ready S: HELO USC-ISIE.ARPA R: 250 BBN-VAX.ARPA   S: mail from: R: 250 OK   S: rcpt: R: 250 OK  

Detailed introduction to the performance and characteristics of Cisco VPN Routers

. If you do not want to use the system's built-in IPSec software, even if it is based on Microsoft's Point-to-Point communication Protocol PPTPPoint-to-Point Tunneling) or L2 Channel Protocol L2TPLayer Two Tunneling Protocol ), it can also perform 2000 session communications at the same time. In combination with VPN networks, Cisco's PIX firewall software can also be used to configure 7140 as a firewall ), this means that Cisco 7140 provides dual-insurance-encryption and firewall for your LAN to

PHP retrieves remote files

, -1, 40000);pperegrina 21-Dec-2011 11:30For those having this problem when trying to get_file_contents(url):Warning: file_get_contents(url): failed to open stream: HTTP request failed! in xx on line yyIf you are behind a SonicWall firewall, read this:https://bugs.php.net/bug.php?id=40197(this little line: uncheck a box in the internal settings of the firewall labled "Enforce Host Tag Search with for CFS")Apparently by default

PHP Get a faraway file

PHP Get remote Files if (! ( $contents =file_get_contents (' HTTP://FINANCE.YAHOO.COM/D/QUOTES.CSV?S=AMZNAMP;E=.CSVAMP;F=SLLDLTLCLOHGV ')) { Die (' fail to open Yahoo '); }; Echo $contents; Why the average refresh of 3-4 is only one success, the other will appear a warning, prompting HTTP request failed! ------Solution-------------------- C + + code Bart Friederichs 16-apr-2012 12:17file_get_contents can do-a POST, create a context for that first: $opts = Array (' http ' = Gt Array

High-end UTM frequent Gateway Security Brewing change

Nearly a period of time, many traditional UTM manufacturers frequently released high-end products-first SonicWALL release 4G products, after the industry's eldest Fortinet thrown 26G of the top UTM. Some analysts pointed out that the emergence of high-performance UTM is not a long time, this is a long-term security manufacturers brewing. Because with the performance of new UTM products more and more high, the future security Gateway market pattern is

"Go" iOS native QR code scan (can limit scan area)

+ pc9wpgo8cd5achjvcgvydhkobm9uyxrvbwljkunhumvjdcbyzwn0t2zjbnrlcmvzdapou19bvkfjtefctevfsu9tkddfmck7pc9wpgrv4srhtcqgqvzdyxb0d xjltwv0ywrhdgfpdxrwdxqg0ru49sr00nsjrmv8tcs94srnysckcjxwpgpazglzy3vzc2lvbjwvcd4kpha+ Clrozsb2ywx1zsbvzib0aglzihbyb3blcnr5iglzigegq0dszwn0ihroyxqgzgv0zxjtaw5lcyb0agugcmvjzwl2zxi= "s Rectangle of Interest for each frame of video. The rectangle's origin is top left and are relative to the coordinate space of the device providing the metadata. Specifying A rectofinterest m

Port Scan analysis Port Scan path

some clues and disable the proxy function. This method can be successful:220 xxxxxxx.com FTP Server (version wu-2.4 (3) wed dec 14...) ready.220 xxx.xxx.xxx.edu FTP server ready.220 XX. Telcom. xxxx. edu FTP Server (version wu-2.4 (3) Tue Jun 11...) ready.220 Lem FTP Server (SunOS 4.1) ready.

Multiple ways to back up the MySQL database

/*!*/;# At 896#161102 18:36:25 Server ID 1 end_log_pos 977 querythread_id=41exec_time=0error_code=0set TIMESTAMP=1478082985/*!* /;d ROP Database testRestore based on point of start and end pointmysqlbinlog/var/lib/mysql/mysql-bin.000018--start-position=705--stop-position=896 | Mysql-uroot4, restore complete, view dataMysql> SELECT * FROM test.student;+------+------+|ID |Name |+------+------+|1 |A | |2 |B | |3 | C |+------+------+3 rows in Set (0.00 sec)Four, xtrabackup the full amount of backup

IOS native QR code scan (restricted scan Areas)

set rectOfInterest to the frame in the middle frame, [_ OutputsetRectOfInterest: CGRectMake (ScreenWidth-220)/64,220,220 +)]; // The width and height of the middle area are both 220 ScreenWidth and the screen width of the device.However, the scan fails. Then I looked at the above paragraph. The second sentence: the origin of the region is located in the upper left corner (I am sorry for this problem !), Th

Multiple ways to back up the MySQL database

operationmysqlbinlog/var/lib/mysql/mysql-bin.000018 # at 869 #161102 18:36:09 server ID 1 end_log_pos 896 Xid = 40 commit/*!*/; # at 896 #161102 18:36:25 server ID 1 end_log_pos 977 Query thread_id=41 exec_time=0 error_code=0Restore based on point of start and end pointmysqlbinlog/var/lib/mysql/mysql-bin.000018--start-position=705--stop-position=896 | Mysql-uroot4, restore complete, view dataMysql> select * from Test.student; +------+------+ | id | name | +------+------+ |1 |A | |2 |B | |3 | C

Uicolor used up the pits

We typically use uicolor RGB to generate colors:[Uicolor colorwithred:220/255 green:220/255 blue:220/255 alpha:1.0];//This generated color is black, not what we wantHere are a few ways to do this:_pushbtn.backgroundcolor = [Uicolor colorwithred:220/255.f green:220/255.f blue

Programmer programming Art: Chapter 6 solving affinity numbers within 5 million

PreludeIn this chapter, apart from retaining the original string, array, and other interview questions, we will consciously cut off some interview questions about small and clever numbers, focusing on the clever ideas ", and "wonderful ". This chapter describes the key words of affinity number, "5 million" and "linear complexity ". Section 1 affinityDescription:Calculate the number of all affinity values less than 5 millionIf the sum of all true factors of two numbers a and B and a is equal to B

Advanced data structure in Python detailed _python

while inserting elements into a list. In some cases, this is more efficient than repeating a list, and for a larger list it is more efficient to maintain order for each step of the operation than to sort it. Let's say you have a range collection: Copy Code code as follows: A = [(0, 100), (150, 220), (500, 1000)] If I want to add a range (250, 400), I might do this: Copy Code code as follows: Import bisect

Jfinal Add Jcaptcha Verification Code implementation method _java

static final font[] Random_font = new font[] {New Font ("Nyala", Font.Bold, Min_font_size),New Font ("Arial", Font.Bold, Min_font_size),New Font ("Bell MT", Font.Bold, Min_font_size),New Font ("Credit Valley", Font.Bold, Min_font_size),New Font ("Impact", Font.Bold, Min_font_size)}; Validation code random Colorprivate static final color[] Random_color = new color[] {New Color (255, 255, 255),New Color (255, 220,

Bubble sort of sorting algorithm

"June 5" bubble sort algorithmtoday's talk is still a simple sort of--bubble sort, time complexity O (n^2). The basic idea is:by comparing and exchanging the adjacent elements, the smaller elements move forward gradually from behind, just as the bubbles in the bottom gradually run upward. The process is as follows:first compare D[n] and d[n-1], if d[n]Suppose we're going to sort 225 220 41 190 242 185 42 231 These 8 numbersSequencing Process DemoIniti

JQueryanimate and CSS3 are combined to achieve slow-moving chase results. Source Code download _ jquery-js tutorial

This article mainly introduces the materials related to the combination of jQueryanimate and CSS3 to achieve the slow-moving chase effect. If you need it, you can refer to CSS3 and jquery to achieve the slow-moving Chase Effect, however, considering the browser compatibility, we recommend that you use the jquery animate method. The following figure shows the implementation result: Download demo source code Reference file: jquery-1.11.1.min.js Html Jquery var $first=$('#first');var $second=

Picture compression tips to share when Photoshop saves pictures

For users of Photoshop software, share a picture compression technique when you save your pictures. Skill Sharing: Recently in doing WebApp, found that the size of the product map no matter how compressed there are still 20-30kb, such size in the Search list page is not a small number. After our backstage remind, said that there is a picture of the East Beijing 220*220px-96dpi-6.62kb~~ in order to find out, I did the following expe

How to choose your firewall _ Web surfing

. Because generally speaking, the smaller the office size, the fewer users, the lower the risk faced. As a result, simple packet-filtering firewalls are sufficient for small offices, such as those that are randomly brought by many DSL or cable routers. These include broadband routers from companies such as D-link, 3Com, Netgear and Linksys. In addition, WatchGuard Firebox Soho, Symantec Firewall 100, global technology company Gnat, NetScreen and SonicWALL

Oracle Local network sub-table simulation partition clipping

View TB asSELECT * FROM tb_1 UNION ALLSELECT * FROM tb_2 UNION ALLSELECT * FROM Tb_3 UNION ALLSELECT * from Tb_4;--Executes the following statement, which is equivalent to querying the id=1 partition, but the plan shows that all partitions are scanned. The reason is that there is no information in this view that can be used to infer that id=1 records are from those tables.2014-07-20 01:42:10>explain Plan for SELECT * from TB where id=1;has been explained.2014-07-20 01:42:26>select * FROM table

CDN full-network acceleration using multiple servers in the Squid Cluster

First create a server group and then use Squid to reverse cache port web80 to accelerate your website. Similar technologies such as 163, sina, and chinaitlab are basically used, and the benefits are great. For example, it accelerates the network and protects against hackers (because they see CDN hosts)This is an application that uses the Squid reverse cluster mode.Network Environment:Master server group: source Web server group located in public ip: 220

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