ASA 5505 link choke

kashif.islam1 — Tue, 12 Mar 2019 08:09:13 GMT

I have ASA 5505 firewall. I have configured using basic configuration for nat . The thing which happens is after 2-3 days the firewall stops pinging, the firewall is connected to a stack of switches , When this happens whole network stops pinging to each other. other routers connected to network also stops responding. Then i switch off the firewall , immediatly network starts working again.

Then it works for 2 days and same thing happens again.

please help

configuration file and version file are attached.

I have starred globlal IP addresse. sorry about that

ciscoasa# sh run
: Saved
:
: Serial Number: JMX1323Z1J1
: Hardware: ASA5505, 512 MB RAM, CPU Geode 500 MHz
:
ASA Version 9.2(4)
!
hostname ciscoasa
enable password O2tuis8eKt.Q79sW encrypted
names
!
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
!
interface Vlan1
nameif inside
security-level 100
ip address 192.168.0.130 255.255.255.0
!
interface Vlan2
nameif outside
security-level 0
ip address *.*.*.* 255.255.255.240
!
ftp mode passive
clock timezone IST 5 30
object network net-192.168.0
subnet 192.168.0.0 255.255.255.0
pager lines 24
logging asdm informational
mtu inside 1500
mtu outside 1500
icmp unreachable rate-limit 1 burst-size 1
icmp permit any inside
no asdm history enable
arp timeout 14400
no arp permit-nonconnected
!
object network net-192.168.0
nat (inside,outside) dynamic interface
route outside 0.0.0.0 0.0.0.0 *.*.*.* 1
timeout xlate 3:00:00
timeout pat-xlate 0:00:30
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
timeout floating-conn 0:00:00
dynamic-access-policy-record DfltAccessPolicy
user-identity default-domain LOCAL
http server enable
http 192.168.0.0 255.255.255.0 inside
no snmp-server location
no snmp-server contact
crypto ipsec security-association pmtu-aging infinite
crypto ca trustpool policy
telnet 192.168.0.0 255.255.255.0 inside
telnet timeout 5
no ssh stricthostkeycheck
ssh timeout 5
ssh key-exchange group dh-group1-sha1
console timeout 0

dhcpd auto_config outside
!
threat-detection basic-threat
threat-detection statistics host
threat-detection statistics port
threat-detection statistics protocol
threat-detection statistics access-list
no threat-detection statistics tcp-intercept
username nuwave password .ewswcj5m.L0wuUx encrypted
!
class-map inspection_default
match default-inspection-traffic
!
!
policy-map type inspect dns preset_dns_map
parameters
message-length maximum client auto
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
inspect ip-options
class class-default
user-statistics accounting
!
service-policy global_policy global
prompt hostname context
no call-home reporting anonymous
Cryptochecksum:23a63c56604ee8289166de003f9c79eb
: end

ciscoasa# sh ver

Cisco Adaptive Security Appliance Software Version 9.2(4)
Device Manager Version 7.6(1)

Compiled on Tue 14-Jul-15 22:19 by builders
System image file is "disk0:/asa924-k8.bin"
Config file at boot was "startup-config"

ciscoasa up 1 hour 38 mins

Hardware: ASA5505, 512 MB RAM, CPU Geode 500 MHz,
Internal ATA Compact Flash, 128MB
BIOS Flash M50FW080 @ 0xfff00000, 1024KB

Encryption hardware device : Cisco ASA-5505 on-board accelerator (revision 0x0)
                             Boot microcode        : CN1000-MC-BOOT-2.00
                             SSL/IKE microcode     : CNLite-MC-SSLm-PLUS-2.06
                             IPSec microcode       : CNlite-MC-IPSECm-MAIN-2.09
                             Number of accelerators: 1

0: Int: Internal-Data0/0    : address is 0025.8462.c90b, irq 11
1: Ext: Ethernet0/0         : address is 0025.8462.c903, irq 255
2: Ext: Ethernet0/1         : address is 0025.8462.c904, irq 255
3: Ext: Ethernet0/2         : address is 0025.8462.c905, irq 255
4: Ext: Ethernet0/3         : address is 0025.8462.c906, irq 255
5: Ext: Ethernet0/4         : address is 0025.8462.c907, irq 255
6: Ext: Ethernet0/5         : address is 0025.8462.c908, irq 255
7: Ext: Ethernet0/6         : address is 0025.8462.c909, irq 255
8: Ext: Ethernet0/7         : address is 0025.8462.c90a, irq 255
9: Int: Internal-Data0/1    : address is 0000.0003.0002, irq 255
10: Int: Not used            : irq 255
11: Int: Not used            : irq 255

Licensed features for this platform:
Maximum Physical Interfaces       : 8              perpetual
VLANs                             : 3              DMZ Restricted
Dual ISPs                         : Disabled       perpetual
VLAN Trunk Ports                  : 0              perpetual
Inside Hosts                      : 50             perpetual
Failover                          : Disabled       perpetual
Encryption-DES                    : Enabled        perpetual
Encryption-3DES-AES               : Enabled        perpetual
AnyConnect Premium Peers          : 2              perpetual
AnyConnect Essentials             : Disabled       perpetual
Other VPN Peers                   : 10             perpetual
Total VPN Peers                   : 12             perpetual
Shared License                    : Disabled       perpetual
AnyConnect for Mobile             : Disabled       perpetual
AnyConnect for Cisco VPN Phone    : Disabled       perpetual
Advanced Endpoint Assessment      : Disabled       perpetual
UC Phone Proxy Sessions           : 2              perpetual
Total UC Proxy Sessions           : 2              perpetual
Botnet Traffic Filter             : Disabled       perpetual
Intercompany Media Engine         : Disabled       perpetual
Cluster                           : Disabled       perpetual

This platform has a Base license.

Serial Number: JMX1323Z1J1
Running Permanent Activation Key: 0x551ad165 0x285b3822 0x98338d98 0x87bc0854 0x
833e3dbd
Configuration register is 0x1
Configuration has not been modified since last system restart.
ciscoasa#

Some have said there might be

kashif.islam1 — Sat, 20 Aug 2016 05:38:28 GMT

Some have said there might be a problem with nat

object network net-192.168.0
nat (inside,outside) dynamic interface

I am not sure

Hi Kasif,

pradypan — Mon, 22 Aug 2016 07:44:08 GMT

Hi Kasif,

Are you observing concern pinging internal network or else the internet. When the issue happens, are you able to ping the next hop from the ASA or nothing works at that time.

Have you verified the logs on ASA to see if anything captured with which we can identify whether ASA is causing any issue.

Have you verified the CPU, memory on the ASA at the time you are observing the concern. Is the issue specifically with ICMP traffic or else you are facing concern with every traffic flow.

Regards

Pradyumna

Hi prdypan

kashif.islam1 — Mon, 29 Aug 2016 04:49:30 GMT

Hi prdypan

Sorry for the delay When this happens nothing works , neither next hop is reachable nor we are able to connect ASA. Even more the computers which have another firewall as gateway also stops responding .All network comes to halt , no PC , Firewall or router is able to communicate. As soon as i Switch off the firewall, it starts working again

Guys

kashif.islam1 — Thu, 01 Sep 2016 08:58:55 GMT

Guys

Can any one help me out

topic ASA 5505 link choke in Network Security

ASA 5505 link choke

Some have said there might be

Hi Kasif,

Hi prdypan

Guys