Hi,
I guess you miss some important for troubleshooting information. Can you
access web sites from location 1 using proxy 1? Can you access web sites
from proxy1 directly (e.g. using curl)? At now, I'd suspect that point
of failure is between proxy1 and internet.
Best wishes,
Pavel
On 01/16/2014 02:22 AM, RKGD512 wrote:
Hi All-
So I have a need to direct all web traffic through an IPSEC Tunnel to a
Squid Proxy server on the other end of the tunnel.
Sounds complicated but the concept is really easy however I am having
issues.
So let me gather as much info as I can:
*Location 1 Subnet:* 192.168.1.0/24
*Location 1 Router 1:* Netgear WNR2000v3 running Firmware: DD-WRT v24-sp2
(02/09/12) std
*Location 1 Router 2:* TPLink TL-R600VPN - VPN Router Housing the IPSEC
Tunnel
*Location 2 Subnet:* 192.168.100.0/24
*Location 2 Router 1:* Linksys WRT310Nv2 running Firmware: DD-WRT v24-sp2
(08/12/10) std-nokaid-small
*Location 2 Router 2:* TPLink TL-R600VPN - VPN Router Housing the IPSEC
Tunnel
Location 1's proxy server is housed on VMware Workstation Version 10 with
Centos 6.4 Minimal with squid proxy installed.
*Description of Issue* So when I enter the proxy server info in System proxy
and open a webpage, the page sits there until it times out. It never
displays anything. I can see that the proxy server is interpreting the
request but on the client from Location 2 to location 1's proxy server is
unable to browse the internet.
Now the funny thing is, as a test I created the same proxy on location 2's
side, location 1 can browse the internet fine and I can tell from
whatismyip.com as well as from logs that everything is fine. I checked all
required firewalls (iptables) and squid configs. Even tried turning off
iptables on the router as well as on the proxy server and included
"http_access allow all" with no success.
Why it works one direction versus the other? I have no idea. I validated
every Hops config and they are all identical in their firewall settings and
squid proxy settings.
Any help would be greatly appreciated!
Showing configs below:
Here's the squid Config:
acl manager proto cache_object
acl localhost src 127.0.0.1/32 ::1 192.168.2.0/24 192.168.100.0/24
192.168.1.0/24
acl to_localhost dst 127.0.0.0/8 0.0.0.0/32 ::1
acl localnet src 10.0.0.0/8 # RFC1918 possible internal network
acl localnet src 172.16.0.0/12 # RFC1918 possible internal network
acl localnet src 192.168.0.0/16 # RFC1918 possible internal network
acl localnet src fc00::/7 # RFC 4193 local private network range
acl localnet src fe80::/10 # RFC 4291 link-local (directly plugged)
machines
acl SSL_ports port 443
acl Safe_ports port 80 # http
acl Safe_ports port 21 # ftp
acl Safe_ports port 443 # https
acl Safe_ports port 70 # gopher
acl Safe_ports port 210 # wais
acl Safe_ports port 1025-65535 # unregistered ports
acl Safe_ports port 280 # http-mgmt
acl Safe_ports port 488 # gss-http
acl Safe_ports port 591 # filemaker
acl Safe_ports port 777 # multiling http
acl CONNECT method CONNECT
http_access allow manager localhost
http_access deny manager
http_access deny !Safe_ports
http_access deny CONNECT !SSL_ports
http_access allow localnet
http_access allow localhost
http_access deny all
http_port 80
hierarchy_stoplist cgi-bin ?
coredump_dir /var/spool/squid
refresh_pattern ^ftp: 1440 20% 10080
refresh_pattern ^gopher: 1440 0% 1440
refresh_pattern -i (/cgi-bin/|\?) 0 0% 0
refresh_pattern . 0 20% 4320
Here are some logs to show the request is hitting the squid server:
&user_id=150566193&nid=2&ts=1389816137 - NONE/- text/html
1389816227.699 58 192.168.100.73 TCP_MISS/200 360 GET
http://notify4.dropbox.com/subscribe? - DIRECT/108.160.162.51 text/plain
1389816279.774 0 192.168.100.73 TCP_MEM_HIT/301 736 GET
http://google.com/ - NONE/- text/html
1389816279.934 136 192.168.100.73 TCP_MISS/302 1186 GET
http://www.google.com/ - DIRECT/74.125.239.17 text/html
1389816285.846 5857 192.168.100.73 TCP_MISS/200 3539 CONNECT
www.google.com:443 - DIRECT/74.125.239.17 -
1389816288.123 0 192.168.100.73 TCP_MEM_HIT/301 736 GET
http://google.com/ - NONE/- text/html
1389816288.207 42 192.168.100.73 TCP_MISS/302 1186 GET
http://www.google.com/ - DIRECT/74.125.239.17 text/html
1389816294.935 6671 192.168.100.73 TCP_MISS/200 3539 CONNECT
www.google.com:443 - DIRECT/74.125.239.17 -
1389816378.040 60130 192.168.100.73 TCP_MISS/200 3828 CONNECT
client-lb.dropbox.com:443 - DIRECT/108.160.165.83 -
1389816387.059 60128 192.168.100.73 TCP_MISS/200 4242 CONNECT
d.dropbox.com:443 - DIRECT/108.160.165.189 -
1389816408.033 180281 192.168.100.73 TCP_MISS/200 3828 CONNECT
client-lb.dropbox.com:443 - DIRECT/108.160.166.9 -
1389816422.068 0 192.168.100.73 NONE/400 3874 GET
/subscribe?host_int=819546594&ns_map=241516770_170677946892514,261374389_5265891279285,241514999_1122846426610167&user_id=150566193&nid=2&ts=1389816421
- NONE/- text/html
*IPTables on squid server:*
# Firewall configuration written by system-config-firewall
# Manual customization of this file is not recommended.
*filter
:INPUT ACCEPT [0:0]
:FORWARD ACCEPT [0:0]
:OUTPUT ACCEPT [0:0]
-A INPUT -s 192.168.100.0/24 -p tcp -m tcp --dport 80 -j ACCEPT
-A INPUT -s 192.168.1.0/24 -p tcp -m tcp --dport 80 -j ACCEPT
-A INPUT -s 192.168.1.0/24 -j ACCEPT
-A INPUT -s 192.168.100.0/24 -j ACCEPT
-A FORWARD -s 192.168.100.0/24 -i eth0 -j ACCEPT
-A FORWARD -s 192.168.1.0/24 -i eth0 -j ACCEPT
-A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
-A INPUT -p icmp -j ACCEPT
-A INPUT -i lo -j ACCEPT
-A INPUT -m state --state NEW -m tcp -p tcp --dport 22 -j ACCEPT
-A INPUT -j REJECT --reject-with icmp-host-prohibited
-A FORWARD -j REJECT --reject-with icmp-host-prohibited
COMMIT
--
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