voip firewall ports

The firewall sets open ports for external use, and the Firewall opens ports for external use. When deploying the project today, I met another person in the project team who reorganized iis on the server. As a result, I couldn't access the subordinate project externally and found the setting method through some channel

I. NAT/ALG Mode Normal Nat implements address translation by modifying the UDP or TCP packet header address information. However, for VoIP applications, address information must also be included in the TCP/UDP net load, ALG Mode means that the VoIP Terminal in the private network fills in the private network address in the Net Load. The address information is changed to the external address on the NAT when

Description of the phenomenon:using the checkpoint firewall as a security gateway, the network is fine, but the Voip(H323) service is not working. Here's how to fix it:the Voip Each endpoint IP Summary Group, as the source address and destination address, see Figure a650) this.width=650; "Src=" Http://s1.51cto.com/wyfs02/M00/89/C0/wKioL1gb6rShbNPZAACyFYyb1CQ768.p

containingCreates a component that connects or listens on ports for all executable components.　　Interval Displays the selected statistics, between each displayPause interval (in seconds). Press CTRL + C to stop re-Displays statistics. If omitted, Netstat displays the currentConfiguration information (show only once)NETSTAT-NL | grep 110You can use it if you see the result (the port number is turned on)First, you can look at the/etc/services file, cha

Edit/etc/sysconfig/iptables, add- s 127.0.0.1 --dport 6379-J Accept-s 126.212.173.185 --dport 6379-j ACCEPTThe above add red place is only to the local and 126.212.173.185 open 6379 port, other IP with Telnet is not connected,If there is no limit to access IP, you do not need to add the- s IP address , for example-A input-m state--state new-m tcp-p TCP--dport 6379-j ACCEPTYes, be sure to add it at the end-A input-j REJECT--reject-with icmp-host-prohibited-A forward-j REJECT --reject-with icmp-ho

Query port number 80 to open: Firewall-cmd --query-port = the / TCPpermanently open 80 Port number: firewall-cmd--permanent--zone=public --add-port = the / TCPRemoving the 80 port number:firewall-cmd--permanent--zone=public --remove-port= TCP--zone #作用域 --add-port=80/tcp #添加端口 in the format: port/Communication protocol --permanent #永久生效, no failure after this parameter is restarted View

Batch add firewall exception ports in Windows Copy codeThe Code is as follows: echo off Cls Set var = 30000 Set end = 30010 : Continue Set/a var + = 1 Echo add port % var % Netsh firewall add portopening TCP % var % ftp_data _ % var % If % var % lss % end % goto continue Echo complete Pause The following article highlights that you can manually add them in order

Add open ports to CentOS firewallAdd firewall-cmd --zone=public --add-port=80/tcp --permanent (-Permanent takes effect permanently. If this parameter is not set, it will become invalid after restart)Reload firewall-cmd --reloadView firewall-cmd --zone= public --query-port=80/tcpDelete

Reprinted from: https://linux.cn/article-4243-1.htmlIf you want to provide services on the server, Enterprise Linux distributions such as CentOS or Rhel contain built-in powerful firewalls, which are strictly the default firewall rules. Therefore, if you install any custom services (such as Web servers, NFS, and Samba), then their traffic is likely to be blocked by firewall rules. So you need to open the ne

　Performance test of LAN switch interface in Flight Tower firewallUnited States flight Tower Fortinet Firewall, the default intranet interface type is hardware exchange, all intranet interfaces share a gateway, the intranet interface allows mutual access, here will be two notes A, B access to the 13, 14 ports to be tested. Notebook A's intranet IP address is set to 10.0.1.28, and the intranet IP address of

Configure Firewall operation instances (enable, stop, enable, and disable ports) in CentOS) CentOS configures firewall operation instances (enable, stop, enable, and disable ports ): Note: basic firewall operation commands: Query the Fi