 OT: Should these ports be open, on dsl router? |
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| swood |
 May 19 2004, 02:55 PM
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Senior Member  Group: Members Posts: 1,839 Joined: 6-February 03 From: Strong Beach Member No.: 251 Region Association: None  |
21 FTP - we access, but don't support our own ftp server
23 Telnet - we do not use telnet I swear we're getting infiltrated. Gotta button the ship up. |
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| campbellcj |
May 19 2004, 10:49 PM
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I can't Re Member Group: Members Posts: 4,550 Joined: 26-December 02 From: Agoura, CA Member No.: 21 Region Association: Southern California 
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QUOTE(SirAndy @ May 19 2004, 04:04 PM) QUOTE(swood @ May 19 2004, 01:55 PM) 21 FTP - we access, but don't support our own ftp server 23 Telnet - we do not use telnet NOTHING on your DSL router should be open INBOUND unless you host your own Web-Server or FTP-Server or Quake-Server ... you don't need ANY inbound port open to access outside ressources! Andy Need to add email to your list...again smtp and pop3 (possibly imap) ports. Since you are running Windows, you really do not even need to open pop3 or imap (or anything but smtp) if you "can" require your external users to connect via a vpn (pptp) account. Generally you want your "internal" network to run on a non-routable IP block such as 192.168.xxx.xxx and you only want to hang external IP's on the machines hosting your Internet services such as smtp, http, ftp or whatnot. The port scanner at www.grc.com is a great quick test to see if everything is basically "ok". The test at www.dnsreport.com is also very handy. |
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Posts in this topic
swood OT: Should these ports be open May 19 2004, 02:55 PM
r_towle shut down everything but port 80 (http) and port 2... May 19 2004, 03:12 PM Pnambic POP is generally port 110.
Are you using a router... May 19 2004, 03:22 PM swood I used the symantic security check (may be cheesy ... May 19 2004, 03:35 PM airsix Did you scan from inside or outside your network? ... May 19 2004, 03:44 PM vortrex airsix is right. any services you are accessing i... May 19 2004, 03:48 PM swood vortrex http://www.whatismyip.com/ May 19 2004, 04:15 PM skline You can always go to www.grc.com and do a test on ... May 19 2004, 05:01 PM SirAndy SirAndy of course, some DSL providers leave those ports op... May 19 2004, 05:08 PM bperry Ah, finally a topic i'm very familiar with...
... May 19 2004, 06:20 PM airsix SirAndy |
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