Servers and Ports used by Cornell Services
The following is a list of the servers and ports that are used for services and applications at Cornell.
| Application | Service/Action | Incoming/ Outgoing |
Local Host | Remote Server | |
| Port | Name | Port | |||
| Colts II | Timecard  |
Outgoing | >1023 | idweb.dataserver.cornell.edu | >1023 |
| CUWebLogin | NetID Authentication | Outgoing | 1010-1012 | cuweblogin2.cit.cornell.edu | 1010-1012 |
| cuweblogin.cit.cornell.edu | 1010-1012 | ||||
| Directory Services | LDAP | Outgoing | >1023 | directory.cornell.edu | ldap(389) |
| finger | Outgoing | >1023 | cornell.edu | finger(79) | |
| DNS | Domain name lookup | Outgoing | >1023 | cudns.cit.cornell.edu | 53/UDP |
| bigred.cit.cornell.edu | 53/UDP | ||||
| dns.cit.cornell.edu | 53/UDP | ||||
| Eudora |
Checking mail - Kerberized |
Outgoing | >1023 | postoffice6.mail.cornell.edu postoffice7.mail.cornell.edu postoffice8.mail.cornell.edu postoffice9.mail.cornell.edu postoffice10.mail.cornell.edu |
kpop(1109) pop(110) smtp(25) imap(143) tls-pop(995) tls-imap(993) |
| Checking mail - Passwords | Outgoing | >1023 | |||
| Sending mail | Outgoing | >1023 | |||
| IMAP | Outgoing | >1023 | |||
| EZ-Print | Printing from mainframe systems to local networked printer | Incoming | (tcp)515 (tcp)9100 (tcp)80 |
ezprint.cit.cornell.edu | (tcp)515 (tcp)9100 |
| ezprint-test.cit.cornell.edu | |||||
| FTP (WS_FTP, Fetch) |
General file transfer | Outgoing | >1023 | FTP Server | ftp(21) ftp-data(20) |
CU People  |
Outgoing | >1023 | www.people.cornell.edu | ftp(21) | |
| Incoming | sidecar(913) | www.people.cornell.edu | >1023 | ||
| Employee Essentials |
Employee information |
Outgoing | 8443 | web1.dataserver.cornell.edu | 8443 |
| Just the Facts |
Grades/bursar/etc. |
Outgoing | >1023 | kfront.cit.cornell.edu | 1993 |
| JTF (web) | Outgoing | 8443 | web1.dataserver.cornell.edu | 8443 | |
| Kerberos | Authentication | Outgoing | >1023 | kerberos.cit.cornell.edu | 749-751/UDP |
| kerberos2.cit.cornell.edu | 749-751/UDP | ||||
| brick1.cit.cornell.edu | 749-751/UDP | ||||
| Change Password | Outgoing | >1023 | kerberos.cit.cornell.edu | 464/UDP | |
| Kerberos 5 | Outgoing | >1023 | kerberos.cit.cornell.edu | 88/UDP | |
| Kerberos 5-to-4 Ticket Conversion | Outgoing | >1023 | kerberos.cit.cornell.edu | 4444/UDP | |
| Permit Server | Outgoing | >1023 | permit1.cit.cornell.edu permit2.cit.cornell.edu |
756/UDP | |
| News Reader (Gravity) |
Reading news | Outgoing | >1023 | newsstand.cit.cornell.edu | nntp(119) |
| Posting - Authentication |
Incoming | sidecar(913) | news01.cit.cornell.edu | >1023 | |
| NTP | Synchronize time | Outgoing | ntp(123) | ntp0.cornell.edu ntp1.cornell.edu ntp2.cornell.edu |
ntp(123) |
| Oracle Calendar (CorporateTime) | Calendar | Outgoing | >1023 | calendar.cornell.edu | 5730 |
| Project SALSA (Runway/Driveway) |
Viewing/opening services | Outgoing | >1023 | salsasrv1.cit.cornell.edu | 20041 |
| fajita.cit.cornell.edu | 20021 | ||||
| Downloading files |
Outgoing | >1023 | salsasrv1.cit.cornell.edu | 20042 | |
| fajita.cit.cornell.edu | 20022 | ||||
| Library | Library Gateway | Outgoing | >1023 | ivy.mannlib.cornell.edu | http(80) |
| Library Host | Outgoing | >1023 | flora.mannlib.cornell.edu | http(80) | |
| Entomology Library | Outgoing | >1023 | mann77.mannlib.cornell.edu | http(80) | |
| SideCar | Authentication | Incoming | sidecar(913) | Remote Server | >1023 |
| Synchronize time | Outgoing | >1023 | ntp0.cornell.edu | time(37) | |
| SSH | Secure Telnet | Outgoing | >1023 | SSH Server | ssh(22) |
| Symantec Norton AntiVirus | LiveUpdate | Outgoing | >1023 | liveupdate.symantecliveupdate.com | http(80) |
| Telnet (HostExplorer, DataComet) |
General telnet | Outgoing | >1023 | Telnet Server | telnet(23) |
| Library Catalog | Outgoing | >1023 | catalog.library.cornell.edu | 410 | |
| TSM | EZ-Backup | Outgoing | >1023 | adsm1.cit.cornell.edu | 1500 |
| Vantive | Case tracking | Outgoing | >1023 | vantive.cit.cornell.edu | 1550 |
| World Wide Web (Internet Explorer, Netscape, Firefox or other web browser application) |
General web browsing | Outgoing | >1023 | Web Server | http(80) |
| SSL web browsing | Outgoing | >1023 | Web Server | https(443) | |
WhoIAm  |
Outgoing | >1023 | whoiam.cornell.edu | http(80) | |
| Incoming | sidecar(913) | whoiam.cornell.edu | >1023 | ||
| Cornell File Server (CUFS)
|
Outgoing | >1023 | cufs.cit.cornell.edu | http(80) | |
| Incoming | sidecar(913) | cufs.cit.cornell.edu | >1023 | ||
| CyberTower | Outgoing | >1023 | qtip.cit.cornell.edu | http(80) | |
| WebMail |
Outgoing | >1023 | webmail.cornell.edu | http(80) | |
| Incoming | sidecar(913) | webmail.cornell.edu | >1023 | ||
| Incoming | sidecar(913) |
postoffice6.mail.cornell.edu postoffice7.mail.cornell.edu postoffice8.mail.cornell.edu postoffice9.mail.cornell.edu postoffice10.mail.cornell.edu |
>1023 | ||
|
Kerberos authentication is required to use this service. |
|
Sidecar authentication is offered for this service, and highly recommended, but is not required. |
|
Sidecar authentication is required to access this service. |
- Conventions for port numbers:
- Well-known ports are those from 0 through 1023. These are usually reserved for particular applications listening for incoming connection.
- Port numbers from 1024 until 65535 are usually dynamically assigned when a program needs to make an outgoing connection.
- ">1023" indicates that the program will be assigned the next unused port number greater than 1023 when it needs to make an outgoing connection.
- More about Kerberos
- Firewalls and Kerberos
- Server Addresses at Cornell
- For port numbers for non-Cornell applications and protocols, please visit the Generic "services" Files web page, or the extensive list of Internet standard port numbers from the Internet Assigned Numbers Authority (IANA).
Return to the Firewalls at Cornell web page