650) this.width=650, "alt=" MOTO360 can open the door of Motorola's rebirth? -Constantine-sci-fi Galaxy "src=" Http://img2.ph.126.net/UfPS58Dt2BXS5Ob1tOuvEA==/2849371189343033699.png "style=" border:0px; margin:0px 10px 0px 0px; "/> The Sun and the moon, the Times change, a moment of success is not success, only tightly grasp the times of the life of the door, you are the true success. The rapid development of the Internet has made an era, one belon
Dport and sport in iptables first translate dport and sport meaning: dport: Destination Port sport: Source Port beginner iptables is easy to confuse, but I try to explain it to you in plain language. Dport and sport are literally easy to understand. One is the destination port for data arrival and the other is the port
1313. Some words about sporttime limit: 0.5 second
Memory limit: 16 MB
Ural doctors worry about the health of their youth very much. Special Investors showed that a lot of clever students instead of playing football, skating
Or bicycling had particle ipated in something like programming Olympus. Moreover, they call it sports programming! To sit near the monitor and think during 5 hours a day-is it a sport? To do it two times per year during the contes
Analysis of dport and sport in iptables
First, let's talk about the concepts of dport and sport:
Dport -------- destination port
Sport -------- Source Port
It is important to note that it is related to the flow behavior of our data packets, that is, the INPUT or OUTPUT.
For example, iptables-a input-p tcp -- dport 80-j ACCEPT here is the INPUT parameter,
Analysis of dport and sport and iptablesdport in iptables
First, let's talk about the concepts of dport and sport:
Dport -------- destination port
Sport -------- Source Port
It is important to note that it is related to the flow behavior of our data packets, that is, the INPUT or OUTPUT.
For example, iptables-a input-p tcp -- dport 80-j ACCEPT here is the INPUT
()Getvisibleorigin (); -width_l =origin.x; -Width_r = origin.x +Visiblesize.width; the -Ball =drawnode::create (); -Ball--Drawdot (VEC2 (0,0),4, color4f (1.0f,1.0f,1.0f,1.0f)); - + addChild (ball); -Ball--SetPosition (origin.x + visiblesize.width/2, ORIGIN.Y + visiblesize.height/2); + A //action-related motion we are generally not used to do game games, generally used to make the game change effect. Because the action is not very good to show the effect of the game at //dot-r
As a result, if I did not dance in the evening after work, I went swimming in the company's swimming pool. I finally went swimming with my father in the nearby Yucheng gongshu swimming pool. I have been swimming frog for a long time, and I have also used it to swim through sun and moon pools. But in reality, I do not like swimming very much because swimming is a kind of human activity, compared with those sports of the ball, it is really boring. I will go swimming again recently. First, I want t
such as times, distances, calories, and pace. It allows you to set goals for each sport and always encourages you to be positive or self-motivated, and to summarize the situation. Your movement is also counted in the Activity app measurement data for the day . Apple Watch gives you a clear picture of your daily activities. To see your progress and trends over time, you can choose to use fitness , an Apple Watch companion app for the iPhone. You can u
Commands in iptables must be case sensitive.
The main syntax differences between ipchains and iptables are as follows:
1. In ipchains, for example, the input chain uses a lowercase name. In iptables, use uppercase input instead.
2. in iptables, you must specify the rule to be applied to that rule table (use-t to specify, such as-T Nat). If this parameter is not specified, the default value is used to filter the table.
3. In ipchains,-I refers to the interface, but in iptables,-I refers to the In
This section describes iptables concepts and usage.
Commands in iptables must be case sensitive.
The main syntax differences between ipchains and iptables are as follows:1. In ipchains, for example, the input chain uses a lowercase name. In iptables, use uppercase input instead.2. in iptables, you must specify the rule to be applied to that rule table (use-t to specify, such as-T Nat). If this parameter is not specified, the default value is used to filter the table.3. In ipchains,-I refers to t
This section describes iptables concepts and usage instructions in iptables, which must be case sensitive. The main syntax differences between ipchains and iptables are as follows: 1. in ipchains, for example, the input chain uses lower-case chains. in iptables, use upper-case INPUT instead. 2. in
IptablesGetting started
This section describes iptables concepts and usage.
Commands in iptables must be case sensitive.
The main syntax differences between ipchains and iptables are as follows:
1. in
ACCEPT
#拒绝外部使用内网进行欺骗
#deny Local Cheat
Iptables-a input-i $EXT _if-s 192.168.0.0/16-j DROP
Iptables-a input-i $EXT _if-s 10.0.0.0/8-j DROP
Iptables-a input-i $EXT _if-s 172.16.0.0/12-j DROP
Iptables-a input-i $EXT _if-s 127.0.0.0/8-j DROP
#从LAN进入防火墙主机的dhcp封包, not released, only released when the firewall is DHCP
#deny Dhcp_packets from LAN
Iptables-a input-p udp-i $INT _if--dport--sport DROP
###----------------------------------------------
Commands in iptables must be case sensitive.The main syntax differences between ipchains and iptables are as follows:1. In ipchains, for example, the input chain uses a lowercase name. In iptables, use uppercase input instead.2. in iptables, you must specify the rule to be applied to that rule table (use-t to specify, such as-T Nat). If this parameter is not specified, the default value is used to filter the table.3. In ipchains,-I refers to the interface, but in iptables,-I refers to the Inboun
###-----------------------------------------------------###
Iptables-a output-o eth0-p tcp-s $ FW_IP -- sport 1024: 65535-d any/0 -- dport 23-j ACCEPT
Iptables-a input-I eth0-p tcp! -- Syn-s any/0 -- sport 23-d $ FW_IP -- dport 1024: 65535-j ACCEPT
Mail transfer channel
Open any Mail host to send a packet to your Mail Server, and your MailServer can also send the packet.
The procedure is as follows: (the d
, INPUT, and OUTPUT will certainly be used at this time, PREROUTING and FORWARD are used when data is only accessed by the server .)It is assumed that the six doors are closed by default. Generate the following code.######################################## ###################################* Nat################################: Prerouting drop [0: 0]: Output drop [0: 0]: Postrouting drop [0: 0]################################-F-Z-X### Add statements in the future.-L-vCOMMIT#####################
filter has three built-in rule chains by default. The input forward Output
# Nat ........... Postrouting, output prerouting
# Mangle ...... two .......... output prerouting
#
# The general format of the iptables command iptables [-T table] operation [Chain] [Options]
# An example of checking complete Parameters
# Iptables-T filter-I input 2-I eth0-s 10.2.1.111 -- Sport 1234-D 10.2.1.123 -- dport 22-J accept
# Iptables-T filter-I o
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