Port numbers

Common port numbers :

7 Echo
20 FTP Data
21 FTP Control
22 SSH
23 Telnet
25 SMTP
53 DNS
67 DHCP
69 TFTP
80 HTTP
88 Kerberos
102 MS Exchange
110 POP3
123 NTP
143 IMAP4
161 SNMP
389 LDAP
443 HTTPS

Protocol numbers :

1 ICMP
2 IGMP
4 IP-within-IP
6 TCP
8 EGP
9 IGP
17 UDP

Looking for a job in IT IMS sector ?

If you are looking for a job in IT IMS sector, there are few things you should look into.

-You can either choose networking or systems/ server side.

-If you are good in routing, switching, vlan's, vpn's, network security, firewalls, communication links, Cisco/ Juniper devices etc. you can go with the network administration.

-If you are more interested in DNS, DHCP, mail servers, ftp servers, domain controllers etc. and  good in Windows/ Linux servers, you can proceed with server administration.

-If you are skilled in operating and maintaining hypervisors like ESXI, Hyper-V etc. you can work as a virtualization expert.

-If you are good in installation and operation of storage devices/ servers like Netapp, EMC etc. with networking knowledge, then you can work as a storage administrator.

-If you are into AWS and Azure, then you can be a cloud engineer. 

What is IT IMS ?

IT IMS refers to IT Infrastructure Management Services (IMS). Information Technology is critical in every business now-a days; right from entertainment, media, banking, automobile, education and so on. The use of computing devices and networked systems are growing rapidly. It is vital for a business, to keep its hardware resources, networks and applications fully functional, available and running in 24/7 mode. The discipline of managing and maintaining the hardware devices, networks and applications for continuous service availabiltity with no down time is referred as IT IMS.

It mainly covers the following areas :

-End user computing

-Desktop administration

-OS administration

-Desktop troubleshooting and maintenance

-Server administration

-Server monitoring

-Networking (routing and switching)

-Network security

-Network monitoring

-Service desk operations

-Virtualization of resources and its management

-Data center operations and maintenance
-Management of on-premise as well as cloud IT infrastructure etc.

IT IMS includes multiple operations and it can be broadly classified into three, based on the process models and operational levels.

1.Service desk operations

2.Network administration

3.Server administration