Firewall Wizards mailing list archives
Re: POP3 problems (?) through Cisco NAT (RE: (no subject))
From: "Terry Bertrand" <tfbsr () hotmail com>
Date: Tue, 15 Jan 2002 14:01:30 -0500
Thanks, yes that was the problem .... someone mentioned that in a previous email and it is working Ok now..
Thanks to all Cheers
From: "Loomis, Rip" <GILBERT.R.LOOMIS () saic com> To: 'Terry Bertrand' <tfbsr () hotmail com> CC: firewall-wizards () nfr com Subject: POP3 problems (?) through Cisco NAT (RE: [fw-wiz] (no subject)) Date: Tue, 15 Jan 2002 12:58:09 -0500 Terry-- Looking at all the messages, and given that NAT is allowing you to "browse the inetrnet and all", is it possible that you need to specify more of a hostname then just "mail"? If I try to telnet to the POP3 port on my home ISP's mail server I get shell1:[/mnt/www/clark.net/ri/rip] telnet mail 110 Trying 129.250.37.45... Connected to corporate.email.verio.net. Escape character is '^]'. +OK NTT/Verio POP3 (dfw-mmp4) but on that system "mail" gets properly looked up in DNS if only a bare hostname is supplied. Perhaps the domain suffixes on your home systems aren't configured in this way... From the same system you're using Outlook Express on, try the following (this should work from a Command/DOS prompt): telnet mail 110 telnet mail.myfreakin.isp.net substituting your real ISP in the latter command. If the second one works and the first one fails, then it's not a security problem (it's a sysadmin problem on your end). If *neither* of them gives a successful connection, then let me know off-list and I'll try to help. (In either case I'm pretty sure that this whole thread was off-topic, although that wasn't obvious at the beginning.) HTH-- --Rip > -----Original Message----- > From: Luca Berra [mailto:bluca () comedia it] > Sent: Monday, 14 January, 2002 19:13 > To: firewall-wizards () nfr com > Subject: Re: [fw-wiz] (no subject) > > > On Sat, Jan 12, 2002 at 05:21:23PM -0500, Terry Bertrand wrote: > > I am running a cable network at home which includes a cisco > router. I am > > able to access email from my cable provider using outlook > express without > > the router. When I include the router which is running NAT > as part of the > > network I am unable to access mail using outlook. Does > anyone have any idea > > as to what sort of access-list I would neet to access mail. > I have tried the > > following. the configuration of outlook express is > > out mail port 25 > > in mail port 110 > > > > access-list 105 permit tcp any any eq smtp (in) > > access-list 106 permit tcp any any eq smtp (out) > > i am lazy, so i will consider all that has been said about > ppl who can solve problems > and ppl who have no clue, and i will counsel you to add rule > to every list. > > access-list 105 deny ip any any log > access-list 106 deny ip any any log > > then look at the debug on your router. > > you will probably find out something interesting about the > difference of source and > destination ports and the fact that a cisco is stateless. > (btw if you don't even mention pop3 the router won't figure > it out by itself)
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Current thread:
- Re: POP3 problems (?) through Cisco NAT (RE: (no subject)) Terry Bertrand (Jan 16)
- <Possible follow-ups>
- POP3 problems (?) through Cisco NAT (RE: (no subject)) Loomis, Rip (Jan 16)