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Community Member

Why is my static doing this?

Hi- hope someone can help with this one.

I've a PIX501, with a fairly basic config: patting an RFC1918 network on a single public IP (PIX's outside interface), PIX is a PPTP server with local authentication, and, up until now, any traffic has originated on the inside and is headed outbound.

Anyway: I now want to forward https (443 on tcp) into my network, to allow Microsoft webmail into one of my servers, on 192.168.2. Fairly straightforward, you would think...

So, I add the following 3 lines:

-access-list webmail_in permit tcp any host (PIX-EXTERNAL-IP-ADDRESS) eq https

-access-group webmail_in in interface outside

-static (inside,outside) interface netmask 0 0

However- after I add the static in, oddly, this then knocks out internet access to my other LAN clients- apart from the server on!

I'm really stuck on this one.

Anyway, if anyone cares to delve in, here's my sanitised config:


PIX Version 6.3(5)

interface ethernet0 auto

interface ethernet1 100full

nameif ethernet0 outside security0

nameif ethernet1 inside security100

enable password (changed) encrypted

passwd (changed) encrypted

hostname (changed)

domain-name (changed)

fixup protocol dns maximum-length 512

fixup protocol ftp 21

fixup protocol h323 h225 1720

fixup protocol h323 ras 1718-1719

fixup protocol http 80

fixup protocol rsh 514

fixup protocol rtsp 554

fixup protocol sip 5060

fixup protocol sip udp 5060

fixup protocol skinny 2000

no fixup protocol smtp 25

fixup protocol sqlnet 1521

fixup protocol tftp 69


access-list inside_outbound_nat0_acl permit ip any

access-list webmail_in permit tcp any host (PIX-EXTERNAL-IP-ADDRESS) eq https

pager lines 100

icmp permit any outside

icmp permit any inside

mtu outside 1500

mtu inside 1500

ip address outside (PIX-EXTERNAL-IP-ADDRESS)

ip address inside

ip audit info action alarm

ip audit attack action alarm

ip local pool vpnpool

pdm logging informational 100

pdm history enable

arp timeout 14400

global (outside) 1 interface

nat (inside) 0 access-list inside_outbound_nat0_acl

nat (inside) 1 0 0

static (inside,outside) interface netmask 0 0

access-group webmail_in in interface outside

route outside (NEXT HOP) 1

timeout xlate 0:05:00

timeout conn 1:00:00 half-closed 0:10:00 udp 0:02:00 rpc 0:10:00 h225 1:00:00

timeout h323 0:05:00 mgcp 0:05:00 sip 0:30:00 sip_media 0:02:00

timeout sip-disconnect 0:02:00 sip-invite 0:03:00

timeout uauth 0:05:00 absolute

aaa-server TACACS+ protocol tacacs+

aaa-server TACACS+ max-failed-attempts 3

aaa-server TACACS+ deadtime 10

aaa-server RADIUS protocol radius

aaa-server RADIUS max-failed-attempts 3

aaa-server RADIUS deadtime 10

aaa-server LOCAL protocol local

http server enable

http inside

http inside

no snmp-server location

no snmp-server contact

snmp-server community dascapito

no snmp-server enable traps

floodguard enable

sysopt connection permit-pptp

telnet timeout 5

ssh inside

ssh timeout 5

console timeout 0

vpdn group pptp-vpn accept dialin pptp

vpdn group pptp-vpn ppp authentication mschap

vpdn group pptp-vpn ppp encryption mppe auto

vpdn group pptp-vpn client configuration address local vpnpool

vpdn group pptp-vpn client configuration dns

vpdn group pptp-vpn client configuration wins

vpdn group pptp-vpn pptp echo 60

vpdn group pptp-vpn client authentication local

vpdn username (username) password (password)

vpdn enable outside

terminal width 80





Re: Why is my static doing this?

Your config is a little off. You have only 1 external ip address so if you static that address to 1 internal host all other host won't have and addres to translate. The static needs to have the tcp port translation. Try the following

static (inside,outside) tcp interface 443 443 netmask 0 0

access-list webmail_in permit tcp any interface outside eq 443

access-group webmail_in in interface outside



Community Member

Re: Why is my static doing this?

Chad, thanks a lot. I had assumed that the acl would cover what the static would translate, port-wise. I will try this out.



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