Markku Kolkka wrote:
A.J. Bonnema kirjoitti viestissään (lähetysaika sunnuntai, 30.
huhtikuuta 2006 09:30):
AFAIK my firewall has all ports closed for both TCP and UDP.
However, I have no means of checking that this is true.
Through the site "Shields Up" (www.grc.com) I have been able
to check that *some* UDP ports are closed (windows related),
but that is no surprise as I run FC5 and the Windows machines
are currently not connected.
There are many other security scanning services on the Net with
more advanced capabilities than grc.com, e.g:
Security Space (registration needed):
https://secure1.securityspace.com/smysecure/basic_index.html
PC Flank Advanced Port Scanner:
http://www.pcflank.com/scanner1.htm
DSLReports Port Scan (requires Java browser plug-in):
http://www.dslreports.com/scan
I have been adjusting firestarter for several days to no avail. I like
it because when I have a problem it often lists something as blocked
rather than having to test by stopping the firewall completely.
Presently I have the FC-5 default firewall and Firestarter enabled but
when I go to GRC Shileds Up it displays a field of red, indicating 1056
open ports. I know this is not the case since I have to open ports to
make sftp, ssh, etc. work?
I assume it is the Netgear "wireless" router responding to their test?
Now I just ran PC Flank of which I was unaware until you mentioned it
and it shows only port 80 open. Any suggestions welcome ...
Bob Goodwin Zuni, Virginia w2bod
Port: Status Service Description
21 stealthed FTP File Transfer Protocol is used to
transfer files between computers
23 stealthed TELNET Telnet is used to remotely create
a shell (dos prompt)
135 stealthed RPC Remote Procedure Call (RPC) is used
in client/server applications based on MS Windows operating systems
137 stealthed NETBIOS Name Service NetBios is used to
share files through your Network Neighborhood
138 stealthed NETBIOS Datagram Service NetBios is
used to share files through your Network Neighborhood
139 stealthed NETBIOS Session Service NetBios is used
to share files through your Network Neighborhood
1080 stealthed SOCKS PROXY Socks Proxy is an internet
proxy service
1243 stealthed SubSeven SubSeven is one of the most
widespread trojans
3128 stealthed Masters Paradise and RingZero Trojan
horses
12345 stealthed NetBus NetBus is one of the most
widespread trojans
12348 stealthed BioNet BioNet is one of the most
widespread trojan
27374 stealthed SubSeven SubSeven is one of the most
widespread trojans
31337 stealthed Back Orifice Back Orifice is one of
the most widespread trojans
80 open HTTP HTTP web services publish web pages
