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icmp

Configure Extended Access Control Lists(ACL) in Cisco Routers

2008-04-18
By: admin
In: Cisco
Tagged: acl, Cisco, Extended-ACL, icmp, ios, ip, router, Standard-ACL, tcp, udp

Extended ACLs are advanced than the Standard ACLs. Unlike the Standard Access Lists where it checks only the Source IP Address to control the flow of the packets, Extended ACLs can check the Source & Destination Address Protocols (IP,ICMP,TCP,UDP) Source & Destination ports If you’re new here, you may want to subscribe to my RSS feed. Thanks for visiting!Read More →

mturoute – Free utility to find the MTU Value to a host or IP Address

2008-02-19
By: admin
In: IP Tools, Windows
Tagged: icmp, ip-address, mtu, network, traceroute, vpn

One of the most important thing that is ignored most of the time while troubleshooting a network problem to a host or a network is checking the MTU related issue. This makes more sense in situations like troubleshooting VPN related issues. MTUROUTE is a small but smart utility that uses ICMP pings of various sizes in order to determine the MTU values (Maximum Transmission Unit) on the path between itself and the target system. MTUROUTE can operate in normal mode where it sends multiple ICMP packets to each hop on the path to identify the smallest MTU between the host and hop or in aRead More →

ARPing – Ping using Address Resolution Protocol(ARP)

2007-12-05
By: admin
In: ARP, IP Tools
Tagged: ARP, ARPing, icmp, internet, IP Tools, ip-utils, Linux, mac-address

ARPing is an utility that can be used to ping using ARP requests instead of using ICMP as used in standard Ping utility. Because it involves ARP, arping is limited to the local network to which the server or the interface (if more than one interface) is connected to. ARPing can be quite useful to Check if an IP Address is already in use before assigning to another device Duplicate address detection Update neighbors ARP cacheRead More →

fping – Ping multiple hotsts at once

2007-10-09
By: admin
In: IP Tools, Linux
Tagged: echo, fping, icmp, IP Tools, Linux, network, ping

fping is a ping like program which uses the Internet Control Message Protocol (ICMP) echo request to determine if a host is up. fping is different from ping in that you can specify any number of hosts on the command line, or specify a file containing the lists of hosts to ping.Read More →

TCP/IP Filtering in Windows

2007-09-10
By: admin
In: Networking, Windows
Tagged: icmp, ip-protocols, tcpip, windows-2000, Windows-xp

Windows XP Professional, Windows 2003 and Windows 2000 supports TCP/IP filtering. TCP/IP filtering allows you to specify exactly which types of incoming IP traffic are processed as the destination for each IP interface. This feature is designed to isolate the traffic being processed by Internet and intranet clients in the absence of other TCP/IP filtering provided by IPSec, the Routing and Remote Access service, or other TCP/IP applications or services. TCP/IP filtering is disabled by default.Read More →



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