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Problem accessing webservers on inside network

bha
Level 1
Level 1

‎07-06-2011 11:43 AM - edited ‎03-04-2019 12:54 PM

Hi there forums!

Got a problem accessing our webservers on the inside interface from other clients on the inside interface on our ASA 5505.

As in, they type in www.company.com in their browser, and it wont work.

However, if we use a PC on another outside network, it works just fine!

Logs are getting spammed with this:

2          Jul 06 2011          20:36:44          106016                                                  Deny IP spoof from (87.54.35.46) to 195.215.244.209 on interface outside

87.54.35.46 is the outside interface address of the ASA,195.215.244.209 is the outside address of the webserver.

I realize this must be a routing issue of some sort, but I'm not really tough on that subject :/

Here's the config:

Result of the command: "show run"
: Saved
:
ASA Version 8.2(1) 
!
hostname ciscoasa
domain-name domain2.local
enable password **************** encrypted
passwd *************** encrypted
names
name 10.35.17.0 VPNpool
name 172.16.0.12 AGDKGate_172.16.0.12
name 10.35.19.201 AGDK-BHA2_10.35.19.201
name 10.35.19.3 AGME2K7_10.35.19.3
name 10.35.19.7 OpenVPN_10.35.19.7
name 172.16.0.16 AGISA_172.16.0.16
name 172.16.0.15 AGISA_172.16.0.15
name 172.16.0.19 AGISA_172.16.0.19
name 172.16.0.22 AGISA_172.16.0.22
name 172.16.0.23 AGISA_172.16.0.23
name 172.16.0.18 AGISA_172.16.0.18
name 172.16.0.20 AGISA_172.16.0.20
name 172.16.0.24 AGISA_172.16.0.24
name 10.35.19.47 AGAXSQL_10.35.19.47
name 10.35.19.19 AGBackup_10.35.19.19
name 10.35.19.17 AGCADServer_10.35.19.17
name 10.35.19.9 AGDomain_10.35.19.9
name 10.35.19.14 AGPortal_10.35.19.14
name 10.35.19.231 AGSQL_10.35.19.231
name 10.35.19.70 AGVmware_10.35.19.70
name 10.35.19.209 AGCitrixDK_10.35.19.209
name 10.10.1.0 LokalNet_AGAP_10.10.1.0
name 10.35.16.0 LokalNet_AGDK_10.35.16.0
name 192.168.151.0 LokalNet_AGUK_192.168.151.0
name 10.12.1.0 LokalNet_RTI_10.12.1.0
name 216.82.240.0 Mailscan1_216.82.240.0
name 67.219.240.0 Mailscan2_67.219.240.0
name 85.158.136.0 Mailscan3_85.158.136.0
name 95.131.104.0 Mailscan4_95.131.104.0
name 117.120.16.0 Mailscan5_117.120.16.0
name 193.109.254.0 Mailscan6_193.109.254.0
name 194.106.220.0 Mailscan7_194.106.220.0
name 195.245.230.0 Mailscan8_195.245.230.0
name 10.35.19.5 PortalSQL_10.35.19.5
name 58.185.54.114 VPNGateway_AGAP
name 62.49.47.42 VPNGateway_AGUK
name 209.74.13.157 VPNGateway_RTI
!
interface Vlan1
 nameif inside
 security-level 100
 ip address 10.35.19.1 255.255.252.0 
!
interface Vlan2
 nameif outside
 security-level 0
 ip address 87.54.35.46 255.255.255.252 
!
interface Vlan5
 nameif dmz
 security-level 50
 ip address 172.16.0.1 255.255.255.0 
!
interface Ethernet0/0
 switchport access vlan 2
!
interface Ethernet0/1
!
interface Ethernet0/2
!
interface Ethernet0/3
!
interface Ethernet0/4
!
interface Ethernet0/5
!
interface Ethernet0/6
!
interface Ethernet0/7
 switchport access vlan 5
!
ftp mode passive
clock timezone CEST 1
clock summer-time CEDT recurring last Sun Mar 2:00 last Sun Oct 3:00
dns domain-lookup inside
dns domain-lookup outside
dns domain-lookup dmz
dns server-group DefaultDNS
 name-server AGDomain_10.35.19.9
 name-server AGME2K7_10.35.19.3
 domain-name domain2.local
same-security-traffic permit inter-interface
same-security-traffic permit intra-interface
object-group service RDP tcp
 port-object eq 3389
object-group service Splashtop tcp
 port-object eq 6783
 port-object eq 6784
 port-object eq 6785
object-group service DynamicWebFTP tcp
 port-object eq 5000
object-group service DMZ_to_Citrix
 service-object tcp eq 8080 
 service-object tcp eq citrix-ica 
 service-object tcp eq www 
object-group protocol TCPUDP
 protocol-object udp
 protocol-object tcp
object-group service DM_INLINE_TCP_2 tcp
 port-object eq https
 port-object eq ldaps
access-list outside_access_in extended permit tcp any host 195.215.244.209 eq ftp 
access-list outside_access_in extended permit ip any any 
access-list outside_access_in remark Ping, DNS
access-list outside_access_in remark www.agramkow.com
access-list outside_access_in extended permit tcp any host AGDKGate_172.16.0.12 eq www 
access-list outside_access_in remark csg.agramkow.com
access-list outside_access_in extended permit tcp any host AGDKGate_172.16.0.12 eq https 
access-list outside_access_in extended permit object-group TCPUDP any any eq domain 
access-list outside_access_in remark FTP til DynamicWeb support
access-list outside_access_in extended permit tcp any host AGDKGate_172.16.0.12 object-group DynamicWebFTP 
access-list outside_access_in remark partner.agramkow.com
access-list outside_access_in extended permit tcp any host AGISA_172.16.0.16 eq https 
access-list outside_access_in remark mobil.agramkow.com
access-list outside_access_in extended permit tcp any host AGISA_172.16.0.15 eq https 
access-list outside_access_in remark webmail.agramkow.com
access-list outside_access_in extended permit tcp any host AGISA_172.16.0.19 eq https 
access-list outside_access_in remark gemini.agramkow.com
access-list outside_access_in extended permit tcp any host AGISA_172.16.0.22 eq https 
access-list outside_access_in remark ycam.agramkow.com
access-list outside_access_in extended permit tcp any host AGISA_172.16.0.23 eq www 
access-list outside_access_in remark reports.agramkow.com
access-list outside_access_in extended permit tcp any host AGISA_172.16.0.18 eq https 
access-list outside_access_in remark agnitio.agramkow.com
access-list outside_access_in extended permit tcp any host AGISA_172.16.0.20 eq https 
access-list outside_access_in remark vip.agramkow.com
access-list outside_access_in extended permit tcp any host AGISA_172.16.0.24 eq https 
access-list outside_access_in remark vpn.agramkow.com
access-list outside_access_in extended permit tcp any host OpenVPN_10.35.19.7 eq https 
access-list outside_access_in extended permit tcp any host AGME2K7_10.35.19.3 eq smtp 
access-list outside_access_in remark RDP til AGDK-BHA2
access-list outside_access_in extended permit tcp any host AGDK-BHA2_10.35.19.201 object-group RDP 
access-list outside_access_in remark Splashtop til AGDK-BHA2
access-list outside_access_in extended permit tcp any host AGDK-BHA2_10.35.19.201 object-group Splashtop 
access-list AGDK standard permit LokalNet_AGDK_10.35.16.0 255.255.252.0 
access-list inside_nat0_outbound extended permit ip any VPNpool 255.255.255.0 
access-list inside_nat0_outbound extended permit ip any LokalNet_AGAP_10.10.1.0 255.255.255.0 
access-list inside_nat0_outbound extended permit ip any 172.16.0.0 255.255.255.0 
access-list inside_nat0_outbound extended permit ip any LokalNet_AGUK_192.168.151.0 255.255.255.0 
access-list outside_cryptomap extended permit ip LokalNet_AGDK_10.35.16.0 255.255.252.0 LokalNet_AGAP_10.10.1.0 255.255.255.0 
access-list dmz_access_in extended permit tcp host AGISA_172.16.0.15 any eq www 
access-list dmz_access_in extended permit tcp host AGISA_172.16.0.15 host AGME2K7_10.35.19.3 object-group DM_INLINE_TCP_2 
access-list dmz_access_in extended permit icmp 172.16.0.0 255.255.255.0 any echo-reply 
access-list dmz_access_in extended permit udp 172.16.0.0 255.255.255.0 any eq domain 
access-list dmz_access_in extended permit object-group DMZ_to_Citrix host AGDKGate_172.16.0.12 host AGCitrixDK_10.35.19.209 
access-list dmz_access_in extended permit ip any any 
access-list outside_cryptomap_1 extended permit ip LokalNet_AGDK_10.35.16.0 255.255.255.0 LokalNet_AGUK_192.168.151.0 255.255.255.0 
access-list inside_access_in extended permit ip any any 
pager lines 24
logging enable
logging asdm informational
mtu inside 1500
mtu outside 1500
mtu dmz 1500
ip local pool VPNpool 10.35.17.100-10.35.17.125 mask 255.255.252.0
no failover
icmp unreachable rate-limit 1 burst-size 1
asdm image disk0:/asdm-621.bin
no asdm history enable
arp timeout 14400
global (outside) 1 interface
nat (inside) 0 access-list inside_nat0_outbound
nat (inside) 1 0.0.0.0 0.0.0.0
static (dmz,outside) tcp 195.215.244.209 www AGDKGate_172.16.0.12 www netmask 255.255.255.255 
static (inside,outside) tcp 195.215.244.209 smtp AGME2K7_10.35.19.3 smtp netmask 255.255.255.255 
static (dmz,outside) tcp 195.215.244.209 https AGDKGate_172.16.0.12 https netmask 255.255.255.255 
static (inside,outside) tcp 195.215.244.210 https OpenVPN_10.35.19.7 https netmask 255.255.255.255 
static (dmz,outside) tcp 195.215.244.209 5000 AGDKGate_172.16.0.12 5000 netmask 255.255.255.255 
static (dmz,outside) tcp 195.215.244.212 https AGISA_172.16.0.15 https netmask 255.255.255.255 
static (inside,outside) tcp 195.215.244.222 3389 AGDK-BHA2_10.35.19.201 3389 netmask 255.255.255.255 
static (inside,outside) tcp 195.215.244.222 6783 AGDK-BHA2_10.35.19.201 6783 netmask 255.255.255.255 
static (inside,outside) tcp 195.215.244.222 6784 AGDK-BHA2_10.35.19.201 6784 netmask 255.255.255.255 
static (inside,outside) tcp 195.215.244.222 6785 AGDK-BHA2_10.35.19.201 6785 netmask 255.255.255.255 
static (dmz,outside) tcp 195.215.244.211 https AGISA_172.16.0.16 https netmask 255.255.255.255 
static (dmz,outside) tcp 195.215.244.215 https AGISA_172.16.0.18 https netmask 255.255.255.255 
static (dmz,outside) tcp 195.215.244.213 https AGISA_172.16.0.19 https netmask 255.255.255.255 
static (dmz,outside) tcp 195.215.244.216 https AGISA_172.16.0.20 https netmask 255.255.255.255 
static (dmz,outside) tcp 195.215.244.214 https AGISA_172.16.0.22 https netmask 255.255.255.255 
static (dmz,outside) tcp 195.215.244.214 www AGISA_172.16.0.23 www netmask 255.255.255.255 
static (dmz,outside) tcp 195.215.244.217 https AGISA_172.16.0.24 https netmask 255.255.255.255 
static (dmz,outside) 195.215.244.209 AGDKGate_172.16.0.12 netmask 255.255.255.255 
access-group inside_access_in in interface inside
access-group outside_access_in in interface outside
access-group dmz_access_in in interface dmz
route outside 0.0.0.0 0.0.0.0 87.54.35.45 1
timeout xlate 3:00:00
timeout conn 1:00:00 half-closed 0:10:00 udp 0:02:00 icmp 0:00:02
timeout sunrpc 0:10:00 h323 0:05:00 h225 1:00:00 mgcp 0:05:00 mgcp-pat 0:05:00
timeout sip 0:30:00 sip_media 0:02:00 sip-invite 0:03:00 sip-disconnect 0:02:00
timeout sip-provisional-media 0:02:00 uauth 0:05:00 absolute
timeout tcp-proxy-reassembly 0:01:00
dynamic-access-policy-record DfltAccessPolicy
http server enable
http LokalNet_AGDK_10.35.16.0 255.255.252.0 inside
http 192.168.1.0 255.255.255.0 inside
no snmp-server location
no snmp-server contact
snmp-server enable traps snmp authentication linkup linkdown coldstart
crypto ipsec transform-set ESP-AES-256-MD5 esp-aes-256 esp-md5-hmac 
crypto ipsec transform-set ESP-DES-SHA esp-des esp-sha-hmac 
crypto ipsec transform-set ESP-3DES-SHA esp-3des esp-sha-hmac 
crypto ipsec transform-set ESP-DES-MD5 esp-des esp-md5-hmac 
crypto ipsec transform-set ESP-AES-192-MD5 esp-aes-192 esp-md5-hmac 
crypto ipsec transform-set ESP-3DES-MD5 esp-3des esp-md5-hmac 
crypto ipsec transform-set ESP-AES-256-SHA esp-aes-256 esp-sha-hmac 
crypto ipsec transform-set ESP-AES-128-SHA esp-aes esp-sha-hmac 
crypto ipsec transform-set ESP-AES-192-SHA esp-aes-192 esp-sha-hmac 
crypto ipsec transform-set ESP-AES-128-MD5 esp-aes esp-md5-hmac 
crypto ipsec security-association lifetime seconds 28800
crypto ipsec security-association lifetime kilobytes 4608000
crypto dynamic-map SYSTEM_DEFAULT_CRYPTO_MAP 65535 set transform-set ESP-AES-128-SHA ESP-AES-128-MD5 ESP-AES-192-SHA ESP-AES-192-MD5 ESP-AES-256-SHA ESP-AES-256-MD5 ESP-3DES-SHA ESP-3DES-MD5 ESP-DES-SHA ESP-DES-MD5
crypto map outside_map2 1 match address outside_cryptomap
crypto map outside_map2 1 set pfs group1
crypto map outside_map2 1 set peer VPNGateway_AGAP 
crypto map outside_map2 1 set transform-set ESP-3DES-MD5 ESP-DES-MD5 ESP-3DES-SHA ESP-DES-SHA
crypto map outside_map2 2 match address outside_cryptomap_1
crypto map outside_map2 2 set pfs group1
crypto map outside_map2 2 set peer VPNGateway_AGUK 
crypto map outside_map2 2 set transform-set ESP-AES-128-SHA ESP-AES-128-MD5 ESP-AES-192-SHA ESP-AES-192-MD5 ESP-AES-256-SHA ESP-AES-256-MD5 ESP-3DES-SHA ESP-3DES-MD5 ESP-DES-SHA ESP-DES-MD5
crypto map outside_map2 2 set phase1-mode aggressive group1
crypto map outside_map2 65535 ipsec-isakmp dynamic SYSTEM_DEFAULT_CRYPTO_MAP
crypto map outside_map2 interface outside
crypto ca trustpoint ASDM_TrustPoint0
 enrollment self
 subject-name CN=ciscoasa
 crl configure
crypto isakmp identity key-id AGDK
crypto isakmp enable outside
crypto isakmp policy 5
 authentication pre-share
 encryption des
 hash md5
 group 1
 lifetime 86400
crypto isakmp policy 10
 authentication pre-share
 encryption 3des
 hash md5
 group 1
 lifetime 86400
no vpn-addr-assign aaa
no vpn-addr-assign dhcp
telnet timeout 5
ssh LokalNet_AGDK_10.35.16.0 255.255.252.0 inside
ssh timeout 5
console timeout 0
dhcpd auto_config outside
!
threat-detection basic-threat
threat-detection statistics port
threat-detection statistics protocol
threat-detection statistics access-list
no threat-detection statistics tcp-intercept
ssl encryption aes256-sha1 aes128-sha1 rc4-sha1
webvpn
 enable inside
 enable outside
 svc image disk0:/anyconnect-win-2.5.2014-k9.pkg 1
 svc enable
group-policy DfltGrpPolicy attributes
 dns-server value 10.35.19.9
 vpn-tunnel-protocol IPSec l2tp-ipsec svc webvpn
 split-tunnel-policy tunnelspecified
 split-tunnel-network-list value AGDK
 default-domain value domain2.local
 address-pools value VPNpool
username admin password tDYV7S6YQPO3cvLK encrypted
tunnel-group DefaultL2LGroup ipsec-attributes
 pre-shared-key *
 peer-id-validate nocheck
tunnel-group DefaultRAGroup general-attributes
 authentication-server-group AGDK
tunnel-group DefaultRAGroup ipsec-attributes
 pre-shared-key *
tunnel-group DefaultWEBVPNGroup general-attributes
 address-pool VPNpool
 authentication-server-group AGDK
tunnel-group DefaultWEBVPNGroup webvpn-attributes
 group-alias AGDK enable
tunnel-group DefaultWEBVPNGroup ipsec-attributes
 pre-shared-key *
tunnel-group VPNGateway_AGAP type ipsec-l2l
tunnel-group VPNGateway_AGAP ipsec-attributes
 pre-shared-key *
 peer-id-validate nocheck
tunnel-group VPNGateway_AGUK type ipsec-l2l
tunnel-group VPNGateway_AGUK ipsec-attributes
 pre-shared-key *
 peer-id-validate nocheck
!
class-map inspection_default
 match default-inspection-traffic
!
!
policy-map type inspect dns preset_dns_map
 parameters
  message-length maximum 512
policy-map global_policy
 class inspection_default
  inspect dns preset_dns_map 
  inspect ftp 
  inspect h323 h225 
  inspect h323 ras 
  inspect rsh 
  inspect rtsp 
  inspect esmtp 
  inspect sqlnet 
  inspect skinny  
  inspect sunrpc 
  inspect xdmcp 
  inspect sip  
  inspect netbios 
  inspect tftp 
!
service-policy global_policy global
prompt hostname context 
Cryptochecksum:e4147ad8b37e823b15b5801f4076d78f
: end
Labels:
0 Helpful
2 Replies 2

Thotsaphon Lueangwattanaphong
Level 7
Level 7

‎07-06-2011 12:44 PM

Hi,

   You get a Public IP address(195.215.244.209) from the DNS server when you want to connect 172.16.0.12(www) from Local LAN. Right? If so,please try this for testing.

For: Accessing from outside-to-DMZ

ciscoasa(conf)#access-list outside_access_in extended permit tcp any host 195.215.244.209 eq www

For: Modifing DNS reply when accessing webserver from local lan

ciscoasa(conf)#static (dmz,outside) 195.215.244.209 AGDKGate_172.16.0.12 netmask 255.255.255.255 dns

HTH,

Toshi

0 Helpful

bha
Level 1
Level 1
In response to Thotsaphon Lueangwattanaphong

‎07-07-2011 05:25 AM

I figured it out, solved it by routing the traffic for the webservers comming from the inside network to the DMZ, bypassing the outside network. No clue if this is the proper way of doing it, but it works

0 Helpful
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