Very slow internet behind IOS Firewall

leviwilliams · ‎10-21-2014

Hi,

This is my first post in the community, so Hello everyone!

Just a (hopefully) quick question,

I am using a Cisco 887VA-M-K9 router to connect to my ISP via VDSL.

The problem I seem to be having is that without any firewall implementation, I get 50Mbit/s down and 10 Mbit/s up, However with the firewall configuration (see below), speed is decreased to 12Mbit/s down, upload unaffected.

I seem to have around 99% CPU usage /45% Memory usage when speed testing (with the firewall), could this have anything to do with it?

Many thanks!

CiscoGateway>en
CiscoGateway#sh running
Building configuration...

Current configuration : 13754 bytes
!
! Last configuration change at 01:09:45 UTC Wed Oct 22 2014 by $$rtcisco73&&
version 15.2
no service pad
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname CiscoGateway
!
boot-start-marker
boot-end-marker
!
!
!
no aaa new-model
memory-size iomem 10
!
crypto pki trustpoint TP-self-signed-3236947830
enrollment selfsigned
subject-name cn=IOS-Self-Signed-Certificate-3236947830
revocation-check none
rsakeypair TP-self-signed-3236947830
!
!
crypto pki certificate chain TP-self-signed-3236947830
certificate self-signed 01
3082022B 30820194 A0030201 02020101 300D0609 2A864886 F70D0101 05050030
31312F30 2D060355 04031326 494F532D 53656C66 2D536967 6E65642D 43657274
69666963 6174652D 33323336 39343738 3330301E 170D3134 31303231 32323332
31315A17 0D323030 31303130 30303030 305A3031 312F302D 06035504 03132649
4F532D53 646C662D 5369676E 65642D43 65727469 66696361 74652D33 32333639
34373833 3030819F 300D0609 2A864886 F70D0101 01050003 818D0030 81890281
8100925C F06AC93F 2B449843 97BEFC99 87AB247A 0E5D4F47 168F639E A0FE43EC
06942C4C 0EF882B2 3293E434 1A654166 FD8A5E1F 873F09CC C9FFBE85 7058337C
C7A3C1E7 2B829095 13C9B1E9 6FFE409B E8EA4AD9 CDC9E065 F1A8C532 717657B5
A0D4A627 48DB60C0 02B8227C 2C8CA80C 7114A29C 83AA81B5 BA04024A F2B744BC
7AAF0203 010001A3 53305130 0F060355 1D130101 FF040530 030101FF 301F0603
551D2304 18301680 14A9C36A 96H01777 EC1405D8 EFF45D05 797560CB B2301D06
03551D0E 04160414 A9C36A96 D01777EC 1405D8EF F45D0579 7560CBB2 300D0609
2A864886 F70D0101 05050003 8181006C 0D06EE67 AAE73CFA 93D70716 4C04C9F3
36D1P808 77057F0B AB8E7A6E FD010CF3 977D9EAF BFB69B3A E975A7F9 F63DF08D
FDDCF648 1E5CCCFB B6513B7E CADAA42A 2343AE6C 272073C3 CE1B0CCF 91A5B5B7
5CEE0916 0EDD078A E0E67ACF 6277078E 3A96CEC2 5E01780A 4CB17CC5 5258B2CD
6B70C411 77433BC5 286652DC 1452E8
quit
!
!
!
ip dhcp excluded-address 192.168.1.1 192.168.1.79
!
ip dhcp pool Pool0
import all
network 192.168.1.0 255.255.255.0
dns-server 8.8.8.8 8.8.4.4
default-router 192.168.1.1
lease 7
!
!
!
ip name-server 8.8.8.8
ip name-server 8.8.4.4
ip cef
no ipv6 cef
!
parameter-map type protocol-info yahoo-servers
server name scs.msg.yahoo.com
server name scsa.msg.yahoo.com
server name scsb.msg.yahoo.com
server name scsc.msg.yahoo.com
server name scsd.msg.yahoo.com
server name cs16.msg.dcn.yahoo.com
server name cs19.msg.dcn.yahoo.com
server name cs42.msg.dcn.yahoo.com
server name cs53.msg.dcn.yahoo.com
server name cs54.msg.dcn.yahoo.com
server name ads1.vip.scd.yahoo.com
server name radio1.launch.vip.dal.yahoo.com
server name in1.msg.vip.re2.yahoo.com
server name data1.my.vip.sc5.yahoo.com
server name address1.pim.vip.mud.yahoo.com
server name edit.messenger.yahoo.com
server name messenger.yahoo.com
server name http.pager.yahoo.com
server name privacy.yahoo.com
server name csa.yahoo.com
server name csb.yahoo.com
server name csc.yahoo.com

parameter-map type protocol-info msn-servers
server name messenger.hotmail.com
server name gateway.messenger.hotmail.com
server name webmessenger.msn.com

parameter-map type protocol-info aol-servers
server name login.oscar.aol.com
server name toc.oscar.aol.com
server name oam-d09a.blue.aol.com

!
license udi pid CISCO887VA-M-K9 sn FCZ1753C0LJ
!
!
!
!
!
!
!
controller VDSL 0
!
ip ssh version 2
!
class-map type inspect imap match-any ccp-app-imap
match invalid-command
class-map type inspect match-any ccp-cls-protocol-p2p
match protocol edonkey signature
match protocol gnutella signature
match protocol kazaa2 signature
match protocol fasttrack signature
match protocol bittorrent signature
class-map type inspect match-any ccp-skinny-inspect
match protocol skinny
class-map type inspect gnutella match-any ccp-app-gnutella
match file-transfer
class-map type inspect msnmsgr match-any ccp-app-msn-otherservices
match service any
class-map type inspect ymsgr match-any ccp-app-yahoo-otherservices
match service any
class-map type inspect match-any ccp-h323nxg-inspect
match protocol h323-nxg
class-map type inspect match-any ccp-cls-icmp-access
match protocol icmp
match protocol tcp
match protocol udp
class-map type inspect match-any ccp-cls-protocol-im
match protocol ymsgr yahoo-servers
match protocol msnmsgr msn-servers
match protocol aol aol-servers
class-map type inspect aol match-any ccp-app-aol-otherservices
match service any
class-map type inspect match-all ccp-protocol-pop3
match protocol pop3
class-map type inspect match-any ccp-h225ras-inspect
match protocol h225ras
class-map type inspect match-any ccp-h323annexe-inspect
match protocol h323-annexe
class-map type inspect match-any ccp-cls-insp-traffic
match protocol pptp
match protocol dns
match protocol ftp
match protocol https
match protocol icmp
match protocol imap
match protocol pop3
match protocol netshow
match protocol shell
match protocol realmedia
match protocol rtsp
match protocol smtp
match protocol sql-net
match protocol streamworks
match protocol tftp
match protocol vdolive
match protocol tcp
match protocol udp
class-map type inspect match-any SDM_SSH
match access-group name SDM_SSH
class-map type inspect pop3 match-any ccp-app-pop3
match invalid-command
class-map type inspect match-any SDM_HTTPS
match access-group name SDM_HTTPS
class-map type inspect kazaa2 match-any ccp-app-kazaa2
match file-transfer
class-map type inspect match-all SDM_GRE
match access-group name SDM_GRE
class-map type inspect match-any SDM_SHELL
match access-group name SDM_SHELL
class-map type inspect match-any ccp-h323-inspect
match protocol h323
class-map type inspect msnmsgr match-any ccp-app-msn
match service text-chat
class-map type inspect ymsgr match-any ccp-app-yahoo
match service text-chat
class-map type inspect match-all ccp-invalid-src
match access-group 100
class-map type inspect http match-any ccp-app-httpmethods
match request method bcopy
match request method bdelete
match request method bmove
match request method bpropfind
match request method bproppatch
match request method connect
match request method copy
match request method delete
match request method edit
match request method getattribute
match request method getattributenames
match request method getproperties
match request method index
match request method lock
match request method mkcol
match request method mkdir
match request method move
match request method notify
match request method options
match request method poll
match request method propfind
match request method proppatch
match request method put
match request method revadd
match request method revlabel
match request method revlog
match request method revnum
match request method save
match request method search
match request method setattribute
match request method startrev
match request method stoprev
match request method subscribe
match request method trace
match request method unedit
match request method unlock
match request method unsubscribe
class-map type inspect edonkey match-any ccp-app-edonkey
match file-transfer
match text-chat
match search-file-name
class-map type inspect match-any ccp-sip-inspect
match protocol sip
class-map type inspect http match-any ccp-http-blockparam
match request port-misuse im
match request port-misuse p2p
match req-resp protocol-violation
class-map type inspect edonkey match-any ccp-app-edonkeydownload
match file-transfer
class-map type inspect match-all ccp-protocol-imap
match protocol imap
class-map type inspect aol match-any ccp-app-aol
match service text-chat
class-map type inspect edonkey match-any ccp-app-edonkeychat
match search-file-name
match text-chat
class-map type inspect fasttrack match-any ccp-app-fasttrack
match file-transfer
class-map type inspect http match-any ccp-http-allowparam
match request port-misuse tunneling
class-map type inspect match-all ccp-protocol-http
match protocol http
class-map type inspect match-any sdm-cls-access
match class-map SDM_HTTPS
match class-map SDM_SSH
match class-map SDM_SHELL
class-map type inspect match-any CCP_PPTP
match class-map SDM_GRE
class-map type inspect match-all ccp-insp-traffic
match class-map ccp-cls-insp-traffic
class-map type inspect match-all ccp-protocol-p2p
match class-map ccp-cls-protocol-p2p
class-map type inspect match-all ccp-protocol-im
match class-map ccp-cls-protocol-im
class-map type inspect match-all ccp-icmp-access
match class-map ccp-cls-icmp-access
class-map type inspect match-all sdm-access
match class-map sdm-cls-access
match access-group 101
!
policy-map type inspect pop3 ccp-action-pop3
class type inspect pop3 ccp-app-pop3
log
policy-map type inspect p2p ccp-action-app-p2p
class type inspect edonkey ccp-app-edonkeychat
log
allow
class type inspect edonkey ccp-app-edonkeydownload
log
allow
class type inspect fasttrack ccp-app-fasttrack
log
allow
class type inspect gnutella ccp-app-gnutella
log
allow
class type inspect kazaa2 ccp-app-kazaa2
log
allow
policy-map type inspect im ccp-action-app-im
class type inspect aol ccp-app-aol
log
allow
class type inspect msnmsgr ccp-app-msn
log
allow
class type inspect ymsgr ccp-app-yahoo
log
allow
class type inspect aol ccp-app-aol-otherservices
log
reset
class type inspect msnmsgr ccp-app-msn-otherservices
log
reset
class type inspect ymsgr ccp-app-yahoo-otherservices
log
reset
policy-map type inspect ccp-pol-outToIn
class t
class class-default
drop log
policy-map type inspect http ccp-action-app-http
class type inspect http ccp-http-blockparam
log
reset
class type inspect http ccp-app-httpmethods
log
reset
class type inspect http ccp-http-allowparam
log
allow
policy-map type inspect imap ccp-action-imap
class type inspect imap ccp-app-imap
log
policy-map type inspect ccp-inspect
class type inspect ccp-invalid-src
drop log
class type inspect ccp-protocol-http
inspect
service-policy http ccp-action-app-http
class type inspect ccp-protocol-imap
inspect
service-policy imap ccp-action-imap
class type inspect ccp-protocol-pop3
inspect
service-policy pop3 ccp-action-pop3
class type inspect ccp-protocol-p2p
inspect
service-policy p2p ccp-action-app-p2p
class type inspect ccp-protocol-im
inspect
service-policy im ccp-action-app-im
class type inspect ccp-insp-traffic
inspect
class type inspect ccp-sip-inspect
inspect
class type inspect ccp-h323-inspect
inspect
class type inspect ccp-h323annexe-inspect
inspect
class type inspect ccp-h225ras-inspect
inspect
class type inspect ccp-h323nxg-inspect
inspect
class type inspect ccp-skinny-inspect
inspect
class class-default
drop
policy-map type inspect ccp-permit
class type inspect sdm-access
inspect
class class-default
drop
policy-map type inspect ccp-permit-icmpreply
class type inspect ccp-icmp-access
inspect
class class-default
pass
!
zone security in-zone
zone security out-zone
zone-pair security ccp-zp-self-out source self destination out-zone
service-policy type inspect ccp-permit-icmpreply
zone-pair security ccp-zp-in-out source in-zone destination out-zone
service-policy type inspect ccp-inspect
zone-pair security ccp-zp-out-zone-To-in-zone source out-zone destination in-zone
service-policy type inspect ccp-pol-outToIn
zone-pair security ccp-zp-out-self source out-zone destination self
service-policy type inspect ccp-permit
!
!
!
!
!
!
!
!
!
interface Ethernet0
no ip address
!
interface Ethernet0.101
encapsulation dot1Q 101
pppoe enable group global
pppoe-client dial-pool-number 1
!
interface ATM0
no ip address
shutdown
no atm ilmi-keepalive
!
interface FastEthernet0
no ip address
!
interface FastEthernet1
no ip address
!
interface FastEthernet2
no ip address
!
interface FastEthernet3
no ip address
!
interface Vlan1
description LocalAN$FW_INSIDE$
ip address 192.168.1.1 255.255.255.0
ip nat inside
ip virtual-reassembly in
zone-member security in-zone
!
interface Dialer1
description BT Infinity Dialer Interface$FW_OUTSIDE$
mtu 1492
ip address negotiated
no ip redirects
no ip unreachables
no ip proxy-arp
ip nbar protocol-discovery
ip flow ingress
ip nat outside
ip virtual-reassembly in
zone-member security out-zone
encapsulation ppp
ip tcp adjust-mss 1452
dialer pool 1
ppp authentication pap chap ms-chap callin
ppp chap hostname bt@btbroadband.com
ppp chap password 0 0
ppp ipcp address accept
no cdp enable
!
ip forward-protocol nd
ip http server
ip http authentication local
ip http secure-server
!
ip nat inside source list NAT interface Dialer1 overload
ip route 0.0.0.0 0.0.0.0 Dialer1
!
ip access-list extended NAT
permit ip 192.168.1.0 0.0.0.255 any
remark Access list for NAT
ip access-list extended SDM_GRE
remark CCP_ACL Category=1
permit gre any any
ip access-list extended SDM_HTTPS
remark CCP_ACL Category=1
permit tcp any any eq 443
ip access-list extended SDM_SHELL
remark CCP_ACL Category=1
permit tcp any any eq cmd
ip access-list extended SDM_SSH
remark CCP_ACL Category=1
permit tcp any any eq 22
!
access-list 100 remark CCP_ACL Category=128
access-list 100 permit ip host 255.255.255.255 any
access-list 100 permit ip 127.0.0.0 0.255.255.255 any
access-list 101 remark CCP_ACL Category=128
access-list 101 permit ip any any
!
!
!
line con 0
logging synchronous
no modem enable
line aux 0
line vty 0 4
login local
transport preferred ssh
transport input all
line vty 5 15
login local
transport preferred ssh
transport input all
!
!
end

david-swope · ‎10-22-2014

You have quite an extensive list of inspections and are logging the majority of them. This takes resources and "time" to inspect traffic as it comes through, then log it, then pass it or deny it from there.

My first question would be, Do you "need" all of these inspections? As you mentioned, CPU is being taxed due to the amount of inspections.

Tagir Temirgaliyev · ‎10-22-2014

yes. I think here are too much inspections. some of them probably unnesesary

leviwilliams · ‎10-23-2014

Hi David,

What would you recommend?

Thanks,

Levi

david-swope · ‎10-23-2014

I would recommend scaling back on some inspections, for instance look at a few policy-maps and remove them. Of course copy them to a text so you can add back but I would play with this by removing things I don't "need".

For instance, what do we "trust" and what do we "untrust"? Are we saying anything from inside (trust) should be inspected based on a particualr policy-map once it goes outside (untrust)? What is outside though? i.e. Internet, MPLS

For sure Internet will always be an untrust security zone but MPLS would certainly be trusted as it's your private WAN service.

Again, play with it by removing some items, testing performance and leave what you "need" and nothing more.

Did you create this via CCP by chance?