RE: Ports 264 and 1720

DF,
Port 264 is used for vpn clients (securemote/secureclient) for topology
download.

Port 1720 is not open by default. Keep in mind that tcp 1720 is also
used for pptp connections. There could be a pptp server behind this
port. Pptp also uses GRE (IP protocol 47).

Or maybe they are using internet based IP phones? There used to be a CP
vulnerability on this port:
http://www.checkpoint.com/techsupport/downloads/docs/firewall1/r55/h323u
pdate.pdf

On port 264 the firewall offers a service to the clients. This service
is however authenticated and you can't get anything from this service
without authenticating first. Old versions of fw-1 accepted
unauthenticated connections on this port. However, Checkpoint FW-1 can
use other ports now for VPN clients. For example if you're using
"visitor mode" the only port that will be open for vpn connections will
be 443 (https). Checkpoint VPNs can also use udp 2764 and udp 500, tcp
1723 (l2tp), IP protocol 94 (old version) and IP protocol 50.

Lars

------------------------------------------------------------------------------
This List Sponsored by: Cenzic

Concerned about Web Application Security?
As attacks through web applications continue to rise, you need to proactively
protect your applications from hackers. Cenzic has the most comprehensive
solutions to meet your application security penetration testing and
vulnerability management needs. You have an option to go with a managed
service (Cenzic ClickToSecure) or an enterprise software (Cenzic Hailstorm).
Download FREE whitepaper on how a managed service can help you:
http://www.cenzic.com/forms/ec.php?pubid=10025
And, now for a limited time we can do a FREE audit for you to confirm your
results from other product. Contact us at request@xxxxxxxxxx
------------------------------------------------------------------------------

Relevant Pages

  • Re: How did they get behind my NAT?
    ... Not having experience with that router, I can't be sure what limits it ... "default forwarding IP", although it is an option on many. ... that listens on that port. ... Always remember - only download files from Trusted Sites. ...
    (alt.computer.security)
  • Re: How did they get behind my NAT?
    ... Not having experience with that router, I can't be sure what limits it ... "default forwarding IP", although it is an option on many. ... I understand that exposing a port exposes any service ... Always remember - only download files from Trusted Sites. ...
    (alt.computer.security)
  • Re: [OT] SCO tells IBM no more AIX ... IBM better buy VMS!
    ... So the net effect is that this port works only on an handful ... > you prefer the new name) such as YellowDog Linux, ... > anything but VMS on a VAX or Alpha because in my honest opinion, ... > management team at HP. ...
    (comp.os.vms)
  • Re: I am sick of windows firewall
    ... download anymore, I switch my modem off/ on to get a new IP ... Telnet servers are known to have no password, this open Telnet ... port will be attracting a LOT of the wrong kind of attention. ... If you really want to control where outbound connections can ...
    (comp.security.firewalls)
  • Re: External hard drive
    ... Maybe you have damaged the driver for the USB port, ... device manager to remove the port and reboot to reload the ... |> using disk management. ...
    (microsoft.public.windowsxp.hardware)