Chapter 4 – Troubleshooting
Multi-Tech RouteFinder RF650VPN User Guide
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Q34. What is a single-homed and multi-homed firewall?
A34. A multi-homed firewall has multiple network interfaces and does not forward packets. Single-homed
firewalls have one network interface card. You would use a single-homed firewall with a choke
router that filters packets not originating from the SOCKS server.
Q35. Is there an RFC for SOCKS?
A35. There is no official RFC for Version 4 of the protocol. There are two documents describing Version
4: SOCKS V4 protocol and extension to SOCKS V4 protocol. There are three RFCs for SOCKS V5
related protocols:
RFC1928 - Describes SOCKS Version 5 protocol, also known as Authenticated Firewall Traversal
(AFT).
RFC1929 - Describes Username/Password authentication for SOCKS V5.
RFC1961 - Describes GSS-API authentication for SOCKS V5
Q36. Why does the password echo when I run rftp?
A36. The password only echoes for anonymous ftp. This is considered a feature.
Q37. What causes the log message incompatible version number: 71 ?
A37. Socks displays this log message when someone tries to use the SOCKS server as an HTTP proxy.
ASCII code 71 is the letter "G", the first letter of an HTTP/1.0 request.