Webserver on DMZ cannot send email via php script using SMTP (cisco firewall pix 515e)

jmateo431 — Tue, 12 Mar 2019 05:12:23 GMT

Hello,

I have two web servers that are sitting in a DMZ behind a Cisco Firewall PIX 515e. The webservers appear to be configured correctly as our website and FTP website are up. On two of our main website, we have two contact forms that use a simple html for to call a php script that uses smtp as its mailing protocol. Since, I am not the network administrator, I don't quite understand how to read the current configurations on the firewall, but I suspect that port 25 is blocked, which prevents the script from actually working or sending out emails. What I've done to narrow the problem done is the following: I used a wamp server to test our scripts with our smtp servers settings, was able to successfully send an email out to both my gmail and work place accounts. Currently, we have backupexec loaded on both of these servers, and when I try to send out an alert I never receive it. I think because port 25 is closed on both of those servers. I will be posting our configuration. if anyone can take a look and perhaps explain to me how I can change our webservers to communicate and successfully deliver mail via that script, I would gladly appreciate it. our IP range is 172.x.x.x, but it looks like our webservers are using 192.x.x.x with NAT in place. Please someone help.

Thanks,

Jeff Mateo

PIX Version 6.3(4)

interface ethernet0 100full
interface ethernet1 100full
interface ethernet2 100full
nameif ethernet0 outside security0
nameif ethernet1 inside security100
nameif ethernet2 DMZ security50
enable password GFO9OSBnaXE.n8af encrypted
passwd GFO9OSBnaXE.n8af encrypted
hostname morrow-pix-ct
domain-name morrowco.com
clock timezone EST -5
clock summer-time EDT recurring
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
names
name 12.42.47.27 LI-PIX
name 172.20.0.0 CT-NET
name 172.23.0.0 LI-NET
name 172.22.0.0 TX-NET
name 172.25.0.0 NY-NET
name 192.168.10.0 CT-DMZ-NET
name 1.1.1.1 DHEC_339849.ATI__LEC_HCS722567SN
name 1.1.1.2 DHEC_339946.ATI__LEC_HCS722632SN
name 199.191.128.105 web-dns-1
name 12.127.16.69 web-dns-2
name 12.3.125.178 NY-PIX
name 64.208.123.130 TX-PIX
name 24.38.31.80 CT-PIX
object-group network morrow-net
network-object 12.42.47.24 255.255.255.248
network-object NY-PIX 255.255.255.255
network-object 64.208.123.128 255.255.255.224
network-object 24.38.31.64 255.255.255.224
network-object 24.38.35.192 255.255.255.248
object-group service morrow-mgmt tcp
port-object eq 3389
port-object eq telnet
port-object eq ssh
object-group network web-dns
network-object web-dns-1 255.255.255.255
network-object web-dns-2 255.255.255.255
access-list out1 permit icmp any any echo-reply
access-list out1 permit icmp object-group morrow-net any
access-list out1 permit tcp any host 12.193.192.132 eq ssh
access-list out1 permit tcp any host CT-PIX eq ssh
access-list out1 permit tcp any host 24.38.31.72 eq smtp
access-list out1 permit tcp any host 24.38.31.72 eq https
access-list out1 permit tcp any host 24.38.31.72 eq www
access-list out1 permit tcp any host 24.38.31.70 eq www
access-list out1 permit tcp any host 24.38.31.93 eq www
access-list out1 permit tcp any host 24.38.31.93 eq https
access-list out1 permit tcp any host 24.38.31.93 eq smtp
access-list out1 permit tcp any host 24.38.31.93 eq ftp
access-list out1 permit tcp any host 24.38.31.93 eq domain
access-list out1 permit tcp any host 24.38.31.94 eq www
access-list out1 permit tcp any host 24.38.31.94 eq https
access-list out1 permit tcp any host 24.38.31.71 eq www
access-list out1 permit tcp any host 24.38.31.71 eq 8080
access-list out1 permit tcp any host 24.38.31.71 eq 8081
access-list out1 permit tcp any host 24.38.31.71 eq 8090
access-list out1 permit tcp any host 24.38.31.69 eq ssh
access-list out1 permit tcp any host 24.38.31.94 eq ftp
access-list out1 permit tcp any host 24.38.31.92 eq 8080
access-list out1 permit tcp any host 24.38.31.92 eq www
access-list out1 permit tcp any host 24.38.31.92 eq 8081
access-list out1 permit tcp any host 24.38.31.92 eq 8090
access-list out1 permit tcp any host 24.38.31.93 eq 3389
access-list out1 permit tcp any host 24.38.31.92 eq https
access-list out1 permit tcp any host 24.38.31.70 eq https
access-list out1 permit tcp any host 24.38.31.74 eq www
access-list out1 permit tcp any host 24.38.31.74 eq https
access-list out1 permit tcp any host 24.38.31.74 eq smtp
access-list out1 permit tcp any host 24.38.31.75 eq https
access-list out1 permit tcp any host 24.38.31.75 eq www
access-list out1 permit tcp any host 24.38.31.75 eq smtp
access-list out1 permit tcp any host 24.38.31.70 eq smtp
access-list out1 permit tcp any host 24.38.31.94 eq smtp
access-list dmz1 permit icmp any any echo-reply
access-list dmz1 deny ip any 10.0.0.0 255.0.0.0
access-list dmz1 deny ip any 172.16.0.0 255.240.0.0
access-list dmz1 deny ip any 192.168.0.0 255.255.0.0
access-list dmz1 permit ip any any
access-list dmz1 deny ip any any
access-list nat0 permit ip CT-NET 255.255.0.0 192.168.220.0 255.255.255.0
access-list nat0 permit ip host 172.20.8.2 host 172.23.0.2
access-list nat0 permit ip CT-NET 255.255.0.0 LI-NET 255.255.0.0
access-list nat0 permit ip CT-NET 255.255.0.0 NY-NET 255.255.0.0
access-list nat0 permit ip CT-NET 255.255.0.0 TX-NET 255.255.0.0
access-list vpn-split-tun permit ip CT-NET 255.255.0.0 192.168.220.0 255.255.255
.0
access-list vpn-split-tun permit ip CT-DMZ-NET 255.255.255.0 192.168.220.0 255.2
55.255.0
access-list vpn-dyn-match permit ip any 192.168.220.0 255.255.255.0
access-list vpn-ct-li-gre permit gre host 172.20.8.2 host 172.23.0.2
access-list vpn-ct-ny permit ip CT-NET 255.255.0.0 NY-NET 255.255.0.0
access-list vpn-ct-ny permit ip CT-DMZ-NET 255.255.255.0 NY-NET 255.255.0.0
access-list vpn-ct-tx permit ip CT-NET 255.255.0.0 TX-NET 255.255.0.0
access-list vpn-ct-tx permit ip CT-DMZ-NET 255.255.255.0 TX-NET 255.255.0.0
access-list static-dmz-to-ct-2 permit ip host 192.168.10.141 CT-NET 255.255.248.
0
access-list nat0-dmz permit ip CT-DMZ-NET 255.255.255.0 192.168.220.0 255.255.25
5.0
access-list nat0-dmz permit ip CT-DMZ-NET 255.255.255.0 LI-NET 255.255.0.0
access-list nat0-dmz permit ip CT-DMZ-NET 255.255.255.0 NY-NET 255.255.0.0
access-list nat0-dmz permit ip CT-DMZ-NET 255.255.255.0 TX-NET 255.255.0.0
access-list static-dmz-to-ct-1 permit ip host 192.168.10.140 CT-NET 255.255.248.
0
access-list static-dmz-to-li-1 permit ip CT-DMZ-NET 255.255.255.0 CT-NET 255.255
.248.0
access-list vpn-ct-li permit ip CT-NET 255.255.0.0 LI-NET 255.255.0.0
access-list vpn-ct-li permit ip CT-DMZ-NET 255.255.255.0 LI-NET 255.255.0.0
access-list vpn-ct-li permit ip host 10.10.2.2 host 10.10.1.1
access-list in1 permit tcp host 172.20.1.21 any eq smtp
access-list in1 permit tcp host 172.20.1.20 any eq smtp
access-list in1 deny tcp any any eq smtp
access-list in1 permit ip any any
access-list in1 permit tcp any any eq smtp
access-list cap4 permit ip host 172.20.1.82 host 192.168.220.201
access-list cap2 permit ip host 172.20.1.82 192.168.220.0 255.255.255.0
access-list in2 deny ip host 172.20.1.82 any
access-list in2 deny ip host 172.20.1.83 any
access-list in2 permit ip any any
pager lines 43
logging on
logging timestamp
logging buffered notifications
logging trap notifications
logging device-id hostname
logging host inside 172.20.1.22
mtu outside 1500
mtu inside 1500
mtu DMZ 1500
ip address outside CT-PIX 255.255.255.224
ip address inside 172.20.8.1 255.255.255.0
ip address DMZ 192.168.10.1 255.255.255.0
ip audit info action alarm
ip audit attack action alarm
ip local pool ctpool 192.168.220.100-192.168.220.200
ip local pool ct-thomson-pool-201 192.168.220.201 mask 255.255.255.255
pdm history enable
arp timeout 14400
global (outside) 1 24.38.31.81
nat (inside) 0 access-list nat0
nat (inside) 1 CT-NET 255.255.0.0 2000 10
nat (DMZ) 0 access-list nat0-dmz
static (inside,DMZ) CT-NET CT-NET netmask 255.255.0.0 0 0
static (inside,outside) 24.38.31.69 172.20.8.2 netmask 255.255.255.255 0 0
static (DMZ,outside) 24.38.31.94 192.168.10.141 netmask 255.255.255.255 0 0
static (inside,outside) 24.38.31.71 172.20.1.11 dns netmask 255.255.255.255 0 0

static (DMZ,outside) 24.38.31.93 192.168.10.140 netmask 255.255.255.255 0 0
static (DMZ,inside) 24.38.31.93 access-list static-dmz-to-ct-1 0 0
static (DMZ,inside) 24.38.31.94 access-list static-dmz-to-ct-2 0 0
static (inside,outside) 24.38.31.92 172.20.1.56 netmask 255.255.255.255 0 0
static (DMZ,outside) 24.38.31.91 192.168.10.138 netmask 255.255.255.255 0 0
static (DMZ,outside) 24.38.31.90 192.168.10.139 netmask 255.255.255.255 0 0
static (inside,outside) 24.38.31.72 172.20.1.20 netmask 255.255.255.255 0 0
static (inside,outside) 24.38.31.73 172.20.1.21 netmask 255.255.255.255 0 0
static (inside,outside) 24.38.31.70 172.20.1.91 netmask 255.255.255.255 0 0
static (DMZ,outside) 24.38.31.88 192.168.10.136 netmask 255.255.255.255 0 0
static (DMZ,outside) 24.38.31.89 192.168.10.137 netmask 255.255.255.255 0 0
static (inside,outside) 24.38.31.74 172.20.1.18 netmask 255.255.255.255 0 0
static (inside,outside) 24.38.31.75 172.20.1.92 netmask 255.255.255.255 0 0
access-group out1 in interface outside
access-group dmz1 in interface DMZ
route outside 0.0.0.0 0.0.0.0 24.38.31.65 1
route inside 10.10.2.2 255.255.255.255 172.20.8.2 1
route inside CT-NET 255.255.248.0 172.20.8.2 1
timeout xlate 3:00:00
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 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
aaa-server ct-rad protocol radius
aaa-server ct-rad max-failed-attempts 2
aaa-server ct-rad deadtime 10
aaa-server ct-rad (inside) host 172.20.1.22 morrow123 timeout 7
aaa authentication ssh console LOCAL
aaa authentication http console LOCAL
aaa authentication serial console LOCAL
aaa authentication telnet console LOCAL
http server enable
http 173.220.252.56 255.255.255.248 outside
http 65.51.181.80 255.255.255.248 outside
http 208.65.108.176 255.255.255.240 outside
http CT-NET 255.255.0.0 inside
no snmp-server location
no snmp-server contact
snmp-server community m0rroW(0
no snmp-server enable traps
floodguard enable
sysopt connection permit-ipsec
sysopt connection permit-pptp
crypto ipsec transform-set 3des-sha esp-3des esp-sha-hmac
crypto ipsec transform-set 3des-md5 esp-3des esp-md5-hmac
crypto dynamic-map dyn_map 20 match address vpn-dyn-match
crypto dynamic-map dyn_map 20 set transform-set 3des-sha
crypto map ct-crypto 10 ipsec-isakmp
crypto map ct-crypto 10 match address vpn-ct-li-gre
crypto map ct-crypto 10 set peer LI-PIX
crypto map ct-crypto 10 set transform-set 3des-sha
crypto map ct-crypto 15 ipsec-isakmp
crypto map ct-crypto 15 match address vpn-ct-li
crypto map ct-crypto 15 set peer LI-PIX
crypto map ct-crypto 15 set transform-set 3des-sha
crypto map ct-crypto 20 ipsec-isakmp
crypto map ct-crypto 20 match address vpn-ct-ny
crypto map ct-crypto 20 set peer NY-PIX
crypto map ct-crypto 20 set transform-set 3des-sha
crypto map ct-crypto 30 ipsec-isakmp
crypto map ct-crypto 30 match address vpn-ct-tx
crypto map ct-crypto 30 set peer TX-PIX
crypto map ct-crypto 30 set transform-set 3des-sha
crypto map ct-crypto 65535 ipsec-isakmp dynamic dyn_map
crypto map ct-crypto client authentication ct-rad
crypto map ct-crypto interface outside
isakmp enable outside
isakmp key ******** address LI-PIX netmask 255.255.255.255 no-xauth no-config-mo
de
isakmp key ******** address 216.138.83.138 netmask 255.255.255.255 no-xauth no-c
onfig-mode
isakmp key ******** address NY-PIX netmask 255.255.255.255 no-xauth no-config-mo
de
isakmp key ******** address TX-PIX netmask 255.255.255.255 no-xauth no-config-mo
de
isakmp identity address
isakmp nat-traversal 20
isakmp policy 10 authentication pre-share
isakmp policy 10 encryption 3des
isakmp policy 10 hash sha
isakmp policy 10 group 2
isakmp policy 10 lifetime 86400
isakmp policy 20 authentication pre-share
isakmp policy 20 encryption 3des
isakmp policy 20 hash md5
isakmp policy 20 group 2
isakmp policy 20 lifetime 86400
isakmp policy 30 authentication pre-share
isakmp policy 30 encryption 3des
isakmp policy 30 hash md5
isakmp policy 30 group 1
isakmp policy 30 lifetime 86400
vpngroup remotectusers address-pool ctpool
vpngroup remotectusers dns-server 172.20.1.5
vpngroup remotectusers wins-server 172.20.1.5
vpngroup remotectusers default-domain morrowny.com
vpngroup remotectusers split-tunnel vpn-split-tun
vpngroup remotectusers idle-time 3600
vpngroup remotectusers password ********
vpngroup CT-thomson-201 address-pool ct-thomson-pool-201
vpngroup CT-thomson-201 dns-server 172.20.1.5
vpngroup CT-thomson-201 wins-server 172.20.1.5
vpngroup CT-thomson-201 default-domain morrowny.com
vpngroup CT-thomson-201 split-tunnel vpn-split-tun
vpngroup CT-thomson-201 idle-time 3600
vpngroup CT-thomson-201 password ********
telnet CT-NET 255.255.0.0 inside
telnet timeout 10
ssh 173.220.252.56 255.255.255.248 outside
ssh 65.51.181.80 255.255.255.248 outside
ssh 208.65.108.176 255.255.255.240 outside
ssh CT-NET 255.255.0.0 inside
ssh timeout 10
management-access inside
console timeout 10
vpdn group admin accept dialin pptp
vpdn group admin ppp authentication pap
vpdn group admin ppp authentication chap
vpdn group admin ppp authentication mschap
vpdn group admin ppp encryption mppe auto
vpdn group admin client configuration address local ctpool
vpdn group admin client configuration dns 172.20.1.5
vpdn group admin client configuration wins 172.20.1.5
vpdn group admin client authentication aaa ct-rad
vpdn group admin pptp echo 60
vpdn enable outsid

topic Webserver on DMZ cannot send email via php script using SMTP (cisco firewall pix 515e) in Network Security

Webserver on DMZ cannot send email via php script using SMTP (cisco firewall pix 515e)