General discussion


Shields Up

By galehickey2 ·
Have Zone Alarm Pro and a Linksys Router and when
I run GRC's Shields Up TEST it shows ports 0 and 1 not stealthed. The rest are. Is there a reason or is it neccessary to stealth these ports. Thank you.

This conversation is currently closed to new comments.

Thread display: Collapse - | Expand +

All Comments

Collapse -

by compgirlfhredi In reply to Shields Up

Well Known TCP/IP ports
Port Number Description
1 TCP Port Service Multiplexer (TCPMUX)
5 Remote Job Entry (RJE)
18 Message Send Protocol (MSP)
20 FTP -- Data
21 FTP -- Control
22 SSH Remote Login Protocol
23 Telnet
25 Simple Mail Transfer Protocol (SMTP)
37 Time
42 Host Name Server (Nameserv)
43 WhoIs
49 Login Host Protocol (Login)
53 Domain Name System (DNS)
69 Trivial File Transfer Protocol (TFTP)
70 Gopher Services
79 Finger
103 X.400 Standard
108 SNA Gateway Access Server
109 POP2
110 POP3
115 Simple File Transfer Protocol (SFTP)
118 SQL Services
119 Newsgroup (NNTP)
137 NetBIOS Name Service
139 NetBIOS Datagram Service
143 Interim Mail Access Protocol (IMAP)
150 NetBIOS Session Service
156 SQL Server
161 SNMP
179 Border Gateway Protocol (BGP)
190 Gateway Access Control Protocol (GACP)
194 Internet Relay Chat (IRC)
197 Directory Location Service (DLS)
389 Lightweight Directory Access Protocol (LDAP)
396 Novell Netware over IP
444 Simple Network Paging Protocol (SNPP)
445 Microsoft-DS
458 Apple QuickTime
546 DHCP Client
547 DHCP Server
569 MSN
1080 Socks

Collapse -

by Joseph Moore In reply to Shields Up

This might be from the router, actually.
The way that routers come out nowadays, they are set up by default to NOT allow port forwarding from the router to the clients behind it.
Probably, your router is the same. The router lets all traffic behind the router (your computer) go out, but NO traffic that comes in that did not originate from an internal client.

So, doing the Shields Up port scan test is just testing the router; it probably never hits your workstation and Zone Alarm.

So, if ports are coming up in the test on the router, you need to look at the router config and see what open ports/services it has on its Internet leg.

Collapse -

by galehickey2 In reply to

Poster rated this answer.

Collapse -

by galehickey2 In reply to Shields Up

This question was closed by the author

Related Discussions

Related Forums