PIX 501 SMTP Probs

[mocsol]

Hi there,

I am running a Pix 501 between a BT DSL NAT box and a small
internal network.

outbound seems to be fine but I am having probs getting the smtp and lotus (1352) ports up and running to accept inbound
traffic.

I have a fixed external IP which translates into 192.168.254.254 on the inside of the BT box.

here is my current config, any comments please??:


PIX Version 6.1(2)
nameif ethernet0 outside security0
nameif ethernet1 inside security100
enable password 8Ry2YjIyt7RRXU24 encrypted
passwd 2KFQnbNIdI.2KYOU encrypted
hostname pixfirewall
domain-name ciscopix.com
fixup protocol ftp 21
fixup protocol http 80
fixup protocol h323 1720
fixup protocol rsh 514
fixup protocol rtsp 554
fixup protocol smtp 25
fixup protocol sqlnet 1521
fixup protocol sip 5060
fixup protocol skinny 2000
names
pager lines 24
interface ethernet0 10baset
interface ethernet1 10full
mtu outside 1500
mtu inside 1500
ip address outside 192.168.254.251 255.255.255.0
ip address inside 192.168.20.251 255.255.255.0
ip audit info action alarm
ip audit attack action alarm
pdm location 192.168.20.2 255.255.255.255 inside
pdm location 192.168.254.254 255.255.255.255 outside
pdm logging informational 100
pdm history enable
arp timeout 14400
global (outside) 1 192.168.254.11-192.168.254.30
global (outside) 1 192.168.254.10
nat (inside) 1 0.0.0.0 0.0.0.0 0 0
static (inside,outside) 192.168.254.251 192.168.20.2 netmask 255.255.255.255 0 0

conduit permit tcp host 192.168.254.251 eq smtp any
conduit permit tcp host 192.168.254.251 eq 1352 any
conduit permit icmp any any
route outside 0.0.0.0 0.0.0.0 192.168.254.254 1
timeout xlate 0:05:00
timeout conn 1:00:00 half-closed 0:10:00 udp 0:02:00 rpc 0:10:00 h323 0:05:00 si
p 0:30:00 sip_media 0:02:00
timeout uauth 0:05:00 absolute
aaa-server TACACS+ protocol tacacs+
aaa-server RADIUS protocol radius
http server enable
http 192.168.20.0 255.255.255.0 inside
no snmp-server location
no snmp-server contact
snmp-server community public
no snmp-server enable traps
no floodguard enable
no sysopt route dnat
telnet timeout 5
ssh timeout 5
dhcpd address 192.168.20.3-192.168.20.32 inside
dhcpd dns 195.40.1.36 193.131.248.36
dhcpd lease 99999
dhcpd ping_timeout 750
dhcpd auto_config outside
dhcpd enable inside
terminal width 80
Cryptochecksum:61f87d5c3a2995fc9401caa2c9d274ad


any ideas would be much appreciated,

Thanks
Mark

 

[N0ktar]

I suggest clear coduit and use access-list insetead

access-list 100 permit icmp any any echo-reply
access-list 100 permit icmp any any time-exceeded
access-list 100 permit icmp any any unreachable
access-list 100 permit tcp any host 192.168.254.251 eq smtp
access-list 100 permit tcp any host 192.168.254.251 eq 1352
access-group 100 in interface outside

now off to control your outbound access

access-list inside permit tcp any any eq smtp
access-list inside permit tcp any any eq domain
access-list inside permit tcp any any eq www
access-list inside permit tcp any any eq 443
access-list inside permit icmp any any
access-group inside in interface inside

you're all set now.

 

[yizhar]

HI.

You might need to change configuration at the DSL box, to add port handlers or default server or whatever it called there, that will map to 192.168.254.251 (defined in your static statement).

Bye
Yizhar Hurwitz

http://come.to/yizhar

http://teachers.sivan.co.il/yizhar

 

[mocsol]

Thanks guys much appreciated-

have suspected that that may be a problem at the DSL interface, but can still not telnet in on pt 25.

Ho hum, will let you know what happens,
meanwhile any further comments welcome


Cheers

Mark