10-27-2013 04:22 PM
Hello,
Recently I setup an SSL VPN to connect to my parent's home network. I have some computers there, and want to try to transfer files between my computer and the one at my parent's. Over the VPN connection, I only get 128kb/s. On both ends, they are 15Mbps connections, and can support internal copies of 4 megs/s. I feel like I should get a better speed than that. I looked around, and people suggested changing the MTU. I have changed the MTU around, and not noticed any increase in the network speed over the VPN. Currently the MTU is at 1500. Below is a copy of my running config. Any thing I'm overlooking, or is this speed normal? Sorry, still relatively new to the ASA 5505.
ASA Version 8.2(5)
!
hostname HardmanASA
enable password #####
passwd ###### encrypted
names
!
interface Ethernet0/0
switchport access vlan 20
!
interface Ethernet0/1
switchport access vlan 10
!
interface Ethernet0/2
switchport access vlan 10
!
interface Ethernet0/3
shutdown
!
interface Ethernet0/4
shutdown
!
interface Ethernet0/5
shutdown
!
interface Ethernet0/6
shutdown
!
interface Ethernet0/7
switchport access vlan 10
!
interface Vlan1
no nameif
no security-level
no ip address
!
interface Vlan10
nameif inside
security-level 100
ip address 192.168.250.1 255.255.255.0
!
interface Vlan20
nameif outside
security-level 0
ip address dhcp setroute
!
ftp mode passive
dns domain-lookup inside
dns domain-lookup outside
access-list nat_0 extended permit ip 192.168.250.0 255.255.255.0 192.168.251.0 255.255.255.0
access-list split_tunnel standard permit 192.168.250.0 255.255.255.0
pager lines 24
mtu inside 1500
mtu outside 1500
ip local pool VPN_Pool 192.168.251.100-192.168.251.101 mask 255.255.255.0
icmp unreachable rate-limit 1 burst-size 1
no asdm history enable
arp timeout 14400
global (outside) 10 interface
nat (inside) 0 access-list nat_0
nat (inside) 10 192.168.250.0 255.255.255.0
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
timeout floating-conn 0:00:00
dynamic-access-policy-record DfltAccessPolicy
aaa authentication ssh console LOCAL
http server enable
http 192.168.250.0 255.255.255.0 inside
http 192.168.251.0 255.255.255.0 inside
no snmp-server location
no snmp-server contact
snmp-server enable traps snmp authentication linkup linkdown coldstart
crypto ipsec security-association lifetime seconds 28800
crypto ipsec security-association lifetime kilobytes 4608000
telnet timeout 5
ssh 192.168.250.0 255.255.255.0 inside
ssh 192.168.251.0 255.255.255.0 inside
ssh timeout 5
ssh version 2
console timeout 0
management-access inside
dhcpd dns 8.8.8.8
!
dhcpd address 192.168.250.20-192.168.250.50 inside
dhcpd enable inside
!
threat-detection basic-threat
threat-detection statistics access-list
no threat-detection statistics tcp-intercept
webvpn
enable outside
svc image disk0:/anyconnect-win-2.5.2014-k9.pkg 1
svc image disk0:/anyconnect-macosx-i386-2.5.2014-k9.pkg 2
svc image disk0:/anyconnect-linux-2.5.2014-k9.pkg 3
svc enable
tunnel-group-list enable
group-policy DfltGrpPolicy attributes
dns-server value 8.8.8.8
vpn-tunnel-protocol IPSec l2tp-ipsec svc webvpn
split-tunnel-policy tunnelspecified
split-tunnel-network-list value split_tunnel
username ###### password ###### encrypted
tunnel-group AnyConnect type remote-access
tunnel-group AnyConnect general-attributes
address-pool VPN_Pool
tunnel-group AnyConnect webvpn-attributes
group-alias AnyConnect enable
!
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 ip-options
inspect netbios
inspect rsh
inspect rtsp
inspect skinny
inspect esmtp
inspect sqlnet
inspect sunrpc
inspect tftp
inspect sip
inspect xdmcp
!
service-policy global_policy global
prompt hostname context
no call-home reporting anonymous
call-home
profile CiscoTAC-1
no active
destination address http https://tools.cisco.com/its/service/oddce/services/DDCEService
destination address email callhome@cisco.com
destination transport-method http
subscribe-to-alert-group diagnostic
subscribe-to-alert-group environment
subscribe-to-alert-group inventory periodic monthly
subscribe-to-alert-group configuration periodic monthly
subscribe-to-alert-group telemetry periodic daily
Cryptochecksum:74fc2287573841a837e97887840a2d91
: end
10-27-2013 07:59 PM
Hi,
In this case should be necessary to enable Dtls, Dtls uses udp, avoids latency and increases bandwitdth. If Udp is blocked the Ssl connection will fallback to regular TLS. You can enable it in Asdm by ckecking it in the interface
Configuration/ remote access / network client access/ ssl connection profile
Regards,
Sent from Cisco Technical Support iPhone App
10-27-2013 08:27 PM
I just enabled DTLS on both the inside and outside interfaces with no noticeable changes in transfer speed. Any other suggestions?
10-27-2013 09:30 PM
Hi,
Another option is the use of the compression command, this is usually enabled by default but maybe you can enter it due to is not showed in the running config, the command is compression svc.
Note: The command helps when we have low bandwitdh connections, the command reduces the size if the packets, for broadband connections this can decrease regular performance
Regards,
Sent from Cisco Technical Support iPhone App
10-28-2013 05:19 PM
Thanks for the suggestion. After trying the "compression svc" command, I didn't notice any speed increase unfortunately.
10-27-2013 11:38 PM
Hi,
This may be the most stupid question ever but have you verified the connection speeds from your parents network behind the ASA5505 to Internet? Also a more up-to-date version of ASA software wouldn't hurt either.
10-28-2013 05:20 PM
I have verified that each network has 15Mbps via speedtest.net. Don't you have to have a Cisco premium license to received upgrades? I just bought this on Amazon, so if I can get free upgrades, I'll definitely go that route.
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