access port and trunk port in vlan

The ing function is mainly used to allow the Internet to access the computer currently mapped. First, we need to map the vro ports. Common open ports include 80, 21, and 3389, port 80 is a common port for websites, port 21 is a common port for FTP servers, and

-if) #ip add 192.168.12.2 255.255.255.0 R4 (config-if) #no sh R1 (config-if) #no sh R4 (config-if) #int F1/15 R1 (config) #ip Route 0.0.0.0 0.0.0.0 192.168.12.1 R4 (config-if) #sw m t R4 (config) #ip Route 0.0.0.0 0.0.0.0 192.168.13.1 Requirement 3: R2 (config) #int f0/0 R2 (config-if) #ip nat I R2 (config) #int F0/1 R2 (config-

look, sure enough! CISCO Catalyst 3550-48-emi is the upper and lower two rows of ports, this brother put 4 jumper all in the last row, the result is not 21-24, but 21, 23, 25, 27. In fact, 25 and 27 ports belong to another Vian. Change the corresponding jumper to 21-24, then go back to the student test, all the computers are connected!Excluding experienceVLAN in improving transmission efficiency and access security, although the work is not, however,

Today on the local computer Win7 X64, several sites have been created to test the web, because multiple sites, so the bound port is not 80, but 8012, 8013 and so on.Once configured, it is common to add these ports to the firewall's inbound rules. But found, still can not access, magic.Later found that the local machine installed a filter ads software Adsafe, guess will be it in mischief, so, will it quit, a

A Port-based VLAN (Port-based-vlan) is a router that can mark 4 LAN ports as a different virtual LAN, and hosts in different VLANs cannot communicate with each other. For example, the LAN1 mouth, LAN2 mouth, LAN4 designated as VLAN1, the LAN3 designated as VLAN2, then LAN1 mouth, LAN2

MSN/QQ share this resource to: msn qq friends Forum share this resource to: Forum friends (UBB Code) Happy Renren Douban Sina Weibo BKJIA Weibo bloggers more articles>Brief introduction how to detect VLAN switches and their port numbers 15:58:01Label: Switch detection full-duplex Ethernet ThroughputWe use the Cisco Catalyst 5500 switch. The 168 ports of the switch are allocated to a virtual LAN. I configure

External Network access intranet database-p2p penetrationIntranet database after deployment, such as local (dynamic) public IP, you can use nat123 dynamic Domain name resolution, real-time domain name resolution to the local public network IP, fixed domain name, thus through the domain name access, connected to the corresponding database application. such as the intranet without public IP, to achieve exte

Iptables implementation of Port forwarding, port mapping and two-way access is not difficult to configure, see below: Allow packet forwarding: #echo 1 >/proc/sys/net/ipv4/ip_forward Forwarding TCP 8081 to xx.xx.xx.xx: #iptables-T nat-i prerouting-p tcp–dport 80-j dnat–to xx.xx.xx.xx Enable the forwarding packet to implement a "two-way path" and set a correct

1. Allow packet forwarding: #echo 1 >/proc/sys/net/ipv4/ip_forward 2. Forward TCP 8081 to xx.xx.xx.xx: #iptables-T nat-i prerouting-p TCP-–dport 8081-j dnat–-to xx.xx.xx.xx 3. Enable the forward packet to implement a "bidirectional path" to set a correct return channel for the packet: #iptables-T nat-i postrouting-p TCP-–dport 8081-j Masquerade 4. Means to save the rule to the/etc/sysconfig/iptables file #service iptables Save 5. Restart Iptables to make the rules you just added take effect #ser

. xmlCopy codeThe Code is as follows: 2. Modify/conf/server. xmlI. Modify the default port number (or do not change it. The default value is generally 8080)II. Check the AJP port number (8009 cannot be modified. If this sentence is commented out, uncomment it)III. Check the ----------------------- Friendly reminder -------------------------------------------------------------Now, you can

Tags: blog HTTP use art ar Div log SQLOriginal article: http://blog.csdn.net/ikmb/article/details/3863705If the website URL is: http: // ip: Port/If SSL is enabled on the website (default port 443 is used), visit the following in the browser:Https: // ip: Port/You will receive the following error:SSL receives a record that exceeds the maximum allowed length.(Erro

ROOT. xmlCopy codeThe Code is as follows: 2. Modify/conf/server. xmlI. Modify the default port number (or do not change it. The default value is generally 8080)II. Check the AJP port number (8009 cannot be modified. If this sentence is commented out, uncomment it) III. Check the ----------------------- Friendly reminder -------------------------------------------------------------Now, you can

1, Port +macA) AM commandUse the Special am user-bind command to complete the binding between the MAC address and the port. For example:[Switcha]am user-bind mac-address 00e0-fc22-f8d3 interface Ethernet 0/1 Configuration Note: Because the port parameter is used, the port is the reference object, that is, the

System Environment:Linux:centos Release 6.5 (Final)LAMPSteps1.lamp turn on SSL# yum Install OpenSSL mod_ssl-y # installs OpenSSL and Apache SSL modules2. Method of certificate Generation# OpenSSL Genrsa-des3-out server.key 1024 # Generate server private key# OpenSSL Req-new-key server.key-out SERVER.CSR # Generate a server certificate request and fill in the relevant certificate information as required# OpenSSL x509-req-days 700-in server.csr-signkey server.key-out Server.cert # Visa#/etc/init.d