vpn icmp

located)Allow hosts on the same LAN to be visible to each other on the pptp vpn Server: proxyarpDebug is enabled.Some general settings are enabled as follows:DumpLockNobsdcompNovjNovjccompNologfdLocation of the log file: logfile/var/log/pptpd. logAllows you to bind multiple physical channels to a single logical channel: multilink6. Edit the user account password file/etc/ppp/chap-secrets# Vim/etc/ppp/chap-secrets# Secrets for authentication using CHA

(config-crypto) # set peer 201.1.1.2 // destination GatewayGW1 (config-crypto) # set transform-set cisco // call the encryption algorithm GW1 (config) # crypto map ccnp 3 ipsec-isamapGW1 (config-crypto) # match add 105 // other trafficGW1 (config-crypto) # set peer 201.1.1.2 // destination GatewayGW1 (config-crypto) # set transform-set hjw // call the encryption algorithm to test whether the VPN can communicate with each other:GW1 # ping 10.1.4.1 sou

stream of interest and enable NAT exemption:Access-list VPN extended permit ip 172.16.1.0 255.255.255.0 192.168.2.0 255.255.255.0 access-list NONAT extended permit ip 172.16.1.0 255.255.255.0 192.168.2.0 255.255.0nat (Inside) 0 access-list NONAT④Configure crypto map and call it on the interface:Crypto map crymap 10 match address VPNCrypto map crymap 10 set pfsCrypto map crymap 10 set peer 202.100.1.2Crypto map crymap 10 set transform-set transetCrypt

Recently, I have seen many vpn things and found that many manufacturers are paying attention to the implementation of Dynamic IP address-based vpn for small and medium-sized enterprises. Of course, cisco is no exception. In its ios12.3 (4) T, it began to support dynamic Address Resolution of vpnpeer. Now, in CiscoIOS12.3 (4) T, VPNpee is created based on the DNS name. Recently, I have seen many

Dec 11 20:21:08 2013 # Generated by iptables-save v1.3.5 on Wed Dec 11 20:21:08 2013 * Filter : Input accept [0: 0] : Forward accept [0: 0] : Output accept [94: 16159] : RH-Firewall-1-INPUT-[0: 0] -A input-j RH-Firewall-1-INPUT -A forward-j RH-Firewall-1-INPUT -A forward-s 172.16.36.0/255.255.255.0-p tcp-m tcp -- tcp-flags FIN, SYN, RST, ack syn-j TCPMSS -- set-mss 1356 -A RH-Firewall-1-INPUT-I lo-j ACCEPT -A RH-Firewall-1-INPUT-p icmp-m

Http://91mail.51.net supply Currently, companies with relatively large scales all have their own subsidiaries. How to keep the branches safe, efficient, low-cost, and multi-purpose connections with the company's headquarters at any time is a challenge facing every enterprise. Traditional methods include leased line connection, dial-up connection, and direct access to IP addresses. However, they are either expensive or have a single function, which may pose security risks. Using a

With the development of network communication technology and the emergence of network applications, more and more user data and enterprise information are transmitted over the Internet. As a result, more and more hackers and cyber threats are emerging. they steal, tamper with, and destroy confidential and sensitive data to achieve their ulterior motives. Therefore, with the development of network communication technology and the emergence of network applications, more and more user data and ente

Use openvpn + linux to quickly establish an enterprise VPN Openvpn introduction http://openvpn.sourceforge.net/, not much said. Openvpn can work in two modes: One is the IP Route mode, which is mainly used for point-to-point One is the Ethernet-based Tunnel Bridge mode, which is applicable to point-to-point and multi-point networks with multiple branches The configuration example described in this article is the first Topology: Lan 1: redhat9.0 two NI

access and mobile office work have become the common needs of various social organizations to improve work efficiency and competitiveness. Due to the popularity and development of the Internet, the IPSec VPN technology enables remote access to a large amount of data, providing a low operating cost and high production efficiency remote access method. However, IPSec VPN is also insufficient. It is very compl

icmp 0:00:02Timeout sunrpc 0:10:00 h323 0:05:00 h225 1:00:00 mgcp 0:05:00 mgcp-pat 0:05:00Timeout sip 0:30:00 sip_media 0:02:00 sip-invite 0:03:00 sip-disconnect 0:02:00Timeout sip-provisional-media 0:02:00 uauth 0:05:00 absoluteTimeout tcp-proxy-reassembly 0:01:00Dynamic-access-policy-record DfltAccessPolicyNo snmp-server locationNo snmp-server contactCrypto ipsec ikev1 transform-set cisco esp-des esp-md5-hmac Phase 2 conversion set)Crypto map cry-m

VPN servers are usually set up using the "route and remote access" component in Windows, but the configuration is complicated. If you can integrate the network firewall and VPN functions, You can simplify the setup process and use firewall policies to enhance the security of the VPN service. Kerio Winroute Firewall (KWF) is a tool built into the

You often use the "Routing and Remote Access" component of the Windows system to set up a VPN server, but this method configuration is more complex. If you can integrate network firewall and VPN functions, you can simplify the erection process, and you can also use firewall policies to enhance the security of VPN services. Kerio Winroute Firewall (hereinafter ref

VPN servers are usually set up using the "route and remote access" component in Windows, but the configuration is complicated. If you can integrate the network firewall and VPN functions, You can simplify the setup process and use firewall policies to enhance the security of the VPN service. Kerio Winroute Firewall (KWF) is a tool built into the

You often use the "Routing and Remote Access" component of the Windows system to set up a VPN server, but this method configuration is more complex. If you can integrate network firewall and VPN functions, you can simplify the erection process, and you can also use firewall policies to enhance the security of VPN services. Kerio Winroute Firewall (hereinafter ref

This article describes the VPN technology in detail from the specific concepts, solutions for different users, as well as its interfaces and implementation functions. VPN is short for Virtual Private Network. As the name suggests, we can regard a virtual private network as an internal private line of an enterprise. It can establish a proprietary communication line between two or more enterprise intranets co

Site to site VPN Experiment1.1 descriptionThis experiment uses two routers to test the VPN configuration. Of course, you can also use a PC to a vro, a PC to a VPN concentrator, or a PC to a firewall. All of these support VPN. While we use IPsec VPN in

MASQUERADE $ service iptables save $ service iptables restart Edit/etc/sysconfig/iptables. Note the following two points: a adds A line-a input-p tcp-m state -- state NEW-m tcp -- dport 1723-j ACCEPT because the default vpn is access B of port 1723 #-a FORWARD-j REJECT -- reject-with icmp-host-prohibited must be commented out, you can also change the ip address range 192.168.18 to forward. Otherwise, you c

Install l2tp/ipsec vpn in Centos 71. install the software package required by l2tp ipsec Yum install epel-release Yum install openswan xl2tpd ppp lsof 2. Set ipsec 2.1 edit/etc/ipsec. conf Vi/etc/ipsec. confReplace xx. xxx with the actual Internet fixed IP address of your host. Others do not move. Config setup Protostack = netkey Dumpdir =/var/run/pluto/ Nat_traversal = yes Virtual_private = % v4: 10.0.0.0/8, % v4: 192.168.0.0/1

Summary Virtual Private Network (VPN) is an important value-added service of the network. This article describes the basic concepts, categories, key technologies of VPN, and management of VPN data and routes. 1. Virtual Private Network A Virtual Private Network (VPN) is a technology used to establish a private ne

Today, virtual private network (VPN) is widely used in the Internet, which allows enterprise networks to expand almost infinitely to every corner of the Earth, thus, the safe and low-cost Network Interconnection model provides a stage for the development of all-encompassing application services.Virtual Private Network (VPN) is a service that uses public network resources to form a private network for custom