iptables multiport

as 0 (all)PROTOCOL:TCP, UDP, ICMP, ICMPv6, Udplite,esp, ah, SCTP,Example: Deny 172.17.66.66 access to 172.17.88.88 TCP80 PortIptables-a forward-s 172.17.66.66-d 172.17.88.88-p tcp--dport 80-j REJECTDescription: [!] The explanation can be reversed. Example: In addition to 172.17.66.66 cannot ping this machine, others canIptables-a Inpput! -S 172.17.66.66-p icmp-j REJECT⑤[!]-I,--in-interface name: Packet inflow interface, only for data packet inflow, only for input, FORWARD, prerouting chain Exa

; Specify up to 15 ports--source-ports,--sprots Port[,port,port]--destination-ports,--dports --ports Input and output chains in the filter tableRelease22 Ports and 80 ports: # iptables-i input-d 172.16.2.1-p tcp-m multiport--dports 22,80-j ACCEPT # iptables-i output-s 172.16.2.1-p tcp-m multiport--sports 22,80-j

Iptables and stun STUN Protocol (rfc3489, see http://www.ietf.org/rfc/rfc3489.txt) will be roughly divided into four types of NAT, namely full cone, restricted cone, port restricted cone and structured Ric. The following is an example (Example 1) to illustrate the differences between the four Nat methods:Machine A is on the private network (192.168.0.4)Nat server (210.21.12.140)Machine B is on the public network (210.15.27.166)Machine C is on the p

A classic and practical IPtables Shell script #! /Bin/sh # modprobe ipt_MASQUERADEmodprobe paiip_nat_ftpiptables-Fiptables-t nat-Fiptables-Xiptables-t nat-X ################# ######### INPUT key ############################ ####### iptables-p input DROPiptables-a input-m state -- state ESTABLISHED, RELATED-j ACCEPTiptables-a input-p tcp-m multiport -- dports 110,

Httpd_accel_with_proxy on Httpd_accel_uses_host_header on ######################################## ############################# Iptables script ######################################## ############################# #! /Bin/sh UPLINK = "eth0" UPIP = "a. B. c. d" LANLINK = "eth1" ROUTER = "yes" # NAT = "UPIP/dynamic" NAT = "UPIP" INTERFACES = "lo eth0 eth1" SERVICES = "80 22 25 110" Deny = "" Case "$ @" in Start) Echo-n "Starting firewall ..." Modpro

DNAT-J dnat -- to IP [-IP] [: Port-port] (NAT table's prerouting chain)Destination Address conversion. DNAT supports converting to a single IP address or an IP address pool.(A group of consecutive IP addresses)For example:Iptables-T Nat-A prerouting-I ppp0-P TCP -- dport 80/-J dnat -- To 192.168.0.1Change the destination address of the packet that comes in from ppp0 to 192.168.0.1. Iptables-T Nat-A prerouting-I ppp0-P TCP -- dport 81/-J dnat -- To 19

--mac-source 00:0c:29:27:55:3f-j DROPDescription: A display match was called using the form "-M module keyword" in iptables. Here we use "-M mac–mac-source" to represent the source MAC address of the packet.11. Allow firewall native to open to TCP ports 20, 21, 25, 110, and Passive mode FTP port 1250-1280Iptables-a input-p tcp-m multiport--dport 20,21,25,110,1250:1280-j ACCEPTDescription: Use "-M

DROPiptables -P FORWARD ACCEPTiptables -P OUTPUT ACCEPTiptables -A INPUT -i lo -j ACCEPTiptables -A OUTPUT -o lo -j ACCEPTiptables -A INPUT -p tcp -m multiport --dports 25,80 -j ACCEPTiptables -A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT Note: You can initialize iptables in the first three items. Modprobe is the process of manually Loading modules. Generally, if you use service

, DISTRibution and Modification 2. How to Apply this Terms to Your the code I.1 for the New Programs I. Sample script. Rc.firewall script code I.2. Rc. Dmz.firewall script code I.3. Rc. Utin.firewall script code I.4. Rc. Dhcp.firewall script code I.5. Rc.flush-iptables script code I.6. Rc.test-iptables Script codeList of Tables3-1. Package 3-2 for local Target (which is our own machine). Local-source packag

website access to role library" -jACCEPT ;; common) /sbin/iptables-ainput-p tcp-s0/0--dportxxxx-mcomment--comment "Manage background backstage" -jACCEPT /sbin/iptables-ainput-ptcp-s0/0--dportxxxx:xxxx-m comment--comment "Name nameserver" -jACCEPT nbSp;/sbin/iptables-ainput-ptcp-s0/0--dportxxx x:xxxx-mcomment--comment "Session Sessionserver" -jACCEPT /sbin/

2.1 Frame Diagram-->prerouting-->[route]-->forward-->postrouting--> mangle | mangle ^ mangle Nat| 2.1 frame Diagram-->prerouting-->[route]-->forward-->postrouting-->mangle | mangle ^ mangleNat | Filter | Nat| || |V |INPUT OUTPUT| mangle ^ mangle| Filter | NatV------>local------->| Filter2.2 Chains and tablesTableFilter: As the name implies, when used for filteringNat: As the name implies, when doing NATNat:network Address TranslatorChainINPUT: In the filter table, matching destination IP is the

= 255 time = 1.20 MS 64 bytes from 10.0.0.254: icmp_seq = 3 ttl = 255 time = 1.03 MS 64 bytes from 10.0.0.254: icmp_seq = 4 ttl = 255 time = 9.86 MS [8] + Stopped ping 10.0.0.254 5.5 IPTABLES settings: 5.5.1 edit scripts Command: [root @ off-proxy/] # chmod 755/etc/rc. d/firewall. sh (modify the file attribute of firewall) Command: [root @ off-proxy/] # vi/etc/rc. d/firewall. sh (use the vi command to open the firewall file for editing)

"[+] Flushing existing iptables rules ...... " $ IPTABLES-F $ IPTABLES-F-t nat $ IPTABLES-X $ IPTABLES-P INPUT DROP $ IPTABLES-P OUTPUT DROP $ IPTABLES-P FORWARD DROP ##### Load ftp co

-to Apply this 2. to TERMS The code for the New Programs i. Sample script i.1. rc.firewall script code i.2. RC. Dmz.firewall script code i.3. RC. Utin.firewall script code i.4. RC. Dhcp.firewall script code i.5. rc.flush-iptables script code i.6. rc.test-iptables script codeList of Tables3-1. Package 3-2 for local Target (which is our own machine). Local-source package 3-3. The packet forwarded 4-1. The pac