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8.3

Squid Proxy and Remote Desktop - HELP

Asked by Rigged in Proxy/Firewall Anti-Virus, IP Tables/IP Chains, Remote Desktop/Terminal Services

Tags: squid, proxy, port 3389, rdp, remote

Hey

I have setup a Transparent Squid Proxy server on Debian 5. Everything is working great FTP, http, Https, but I can't Remote Desktop to a windows machine with a public IP.

I have tried making changes to IPtables (I am quite dumb when it comes to IPTables), but I don't seem to be getting anywhere - without breaking anything.

Has anyone ever got this right? What Changes do I need to make to IPtables or to squid.conf to get this working?

Below is my Squid.conf and also a little script I Have for the IPtables (got the IPtables script from http://www.cyberciti.biz/tips/linux-setup-transparent-proxy-squid-howto.html but slightly changed)

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             :#:  cat /etc/squid/squid.conf
acl all src all
acl manager proto cache_object
acl localhost src 127.0.0.1/32
acl to_localhost dst 127.0.0.0/8
acl localnet src 10.47.134.0/24 10.47.135.0/24     # RFC1918 possible internal network
acl SSL_ports port 443          # https
acl SSL_ports port 563          # snews
acl SSL_ports port 873          # rsync
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 Safe_ports port 631         # cups
acl Safe_ports port 873         # rsync
acl Safe_ports port 901         # SWAT
acl purge method PURGE
acl CONNECT method CONNECT
http_access allow manager localhost
http_access deny manager
http_access allow purge localhost
http_access deny purge
http_access allow !Safe_ports
http_access allow CONNECT !SSL_ports
http_access allow localhost
http_access allow localnet
http_access deny all
icp_access allow localnet
icp_access allow all
http_port 3128 transparent
hierarchy_stoplist cgi-bin ?
access_log /var/log/squid/access.log
refresh_pattern ^ftp:           1440    20%     10080
refresh_pattern ^gopher:        1440    0%      1440
refresh_pattern -i (/cgi-bin/|\?) 0     0%      0
refresh_pattern (Release|Package(.gz)*)$        0       20%     2880
refresh_pattern .               0       20%     4320
acl shoutcast rep_header X-HTTP09-First-Line ^ICY\s[0-9]
upgrade_http0.9 deny shoutcast
acl apache rep_header Server ^Apache
broken_vary_encoding allow apache
extension_methods REPORT MERGE MKACTIVITY CHECKOUT
hosts_file /etc/hosts
icp_port 3130
coredump_dir /var/spool/squid
log_fqdn on
_____________________________________________________________
:#:  cat /etc/iptables.proxy
 
# squid server IP
SQUID_SERVER="196.211.63.174"
# Interface connected to Internet
INTERNET="eth1"
# Interface connected to LAN
LAN_IN="eth0"
# Squid port
SQUID_PORT="3128"
 
# Clean old firewall
iptables -F
iptables -X
iptables -t nat -F
iptables -t nat -X
iptables -t mangle -F
iptables -t mangle -X
# Load IPTABLES modules for NAT and IP conntrack support
modprobe ip_conntrack
modprobe ip_conntrack_ftp
# For win xp ftp client
#modprobe ip_nat_ftp
echo 1 > /proc/sys/net/ipv4/ip_forward
# Setting default filter policy
iptables -P INPUT DROP
iptables -P OUTPUT ACCEPT
# Unlimited access to loop back
iptables -A INPUT -i lo -j ACCEPT
iptables -A OUTPUT -o lo -j ACCEPT
# Allow UDP, DNS and Passive FTP
iptables -A INPUT -i $INTERNET -m state --state ESTABLISHED,RELATED -j ACCEPT
# set this system as a router for Rest of LAN
iptables --table nat --append POSTROUTING --out-interface $INTERNET -j MASQUERADE
iptables --append FORWARD --in-interface $LAN_IN -j ACCEPT
# unlimited access to LAN
iptables -A INPUT -i $LAN_IN -j ACCEPT
iptables -A OUTPUT -o $LAN_IN -j ACCEPT
# DNAT port 80 request comming from LAN systems to squid 3128 ($SQUID_PORT) aka transparent proxy
iptables -t nat -A PREROUTING -i $LAN_IN -p tcp --dport 80 -j DNAT --to $SQUID_SERVER:$SQUID_PORT
# if it is same system
iptables -t nat -A PREROUTING -i $INTERNET -p tcp --dport 80 -j REDIRECT --to-port $SQUID_PORT
# DROP everything and Log it
iptables -A INPUT -j LOG
iptables -A INPUT -j DROP

           
         

	Title
1	Squid proxy - https and ftp not working
2	DNS speed issue with squid

Squid Proxy and Remote Desktop - HELP

Asked by Rigged in Proxy/Firewall Anti-Virus, IP Tables/IP Chains, Remote Desktop/Terminal Services

Tags: squid, proxy, port 3389, rdp, remote

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